Free backlink sites list: 1,964 places to get a link
A maintained list of 1,964 legitimate backlink sites: directories, profile creation sites, guest posting sites, launch platforms, registries and marketplaces. 1,628 are free or have a free tier, 44 usually give a dofollow link, and 781 have an estimated DA of 70 or more. Every row shows authority, link type, cost and effort, and links straight to the submit page.
- 1,964
- Opportunities
- 1,628
- Free or freemium
- 781
- Est. DA 70+
- 208
- Quick wins
All filters1
The table is wider than the screen — swipe it sideways for cost, effort and the preparation notes.
| # | Impact (sorted) | Site — sort by this | Est. DA — sort by this | Link | Domain | Type | Cost | Effort — sort by this | Priority | Status | What to prepare | Rules / caveat | Checked | Actions |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 301 | 81 | ToolDirectory.AI | — | Link type unknown | tooldirectory.ai | AI tool directories | Free + paid tier | Moderate | High | Not submitted | Submit your tool name, live URL, pricing tier and optional visuals; editor writes the final listing. | Working public URL required; hand review; copy may be edited; most unknown free listings may be declined. | 2026-07-30 • https://tooldirectory.ai/submit-tool | Open ToolDirectory.AI submit page (new tab)ToolDirectory.AI details |
| 302 | 81 | ToolScout | — | Link type unknown | toolscout.ai | AI tool directories | Free + paid tier | Moderate | High | Not submitted | Submit AI feature; free listing reviewed by human. | Sign-in needed; human review 24-48h stated. | 2026-07-30 | Open ToolScout submit page (new tab)ToolScout details |
| 303 | 80 | Albato App Integrator | 50 | Link type unknown | albato.com | Marketplaces and app stores | Not stated | Moderate | High | Live, conditional | Build and test an your tool API integration, then request publication in Albato's public app library. | Requires documented API access, working authentication, tested triggers/actions and compliance with publication rules. | 2026-08-05 | Open Albato App Integrator submit page (new tab)Albato App Integrator details |
| 304 | 80 | Databricks Marketplace | 85 | Nofollow | databricks.com | Marketplaces and app stores | Not stated | Moderate | High | Verified live | Publish an your tool privacy-checking notebook, synthetic benchmark, AI model, app, or defensive MCP server. | Requires Unity Catalog, Marketplace admin role, provider-policy acceptance, and partner approval for public listings. | Official Databricks Marketplace provider documentation checked 2026-08-07 | Open Databricks Marketplace submit page (new tab)Databricks Marketplace details |
| 305 | 80 | Dealify | 45 | Link type unknown | dealify.com | Marketplaces and app stores | Not stated | Moderate | High | Live, conditional | Propose a truthful lifetime, annual, credit-based, or freebie campaign with clear limits and customer support terms. | Dealify vets products; do not create an artificial discount, and confirm refund, support, payout, and campaign obligations before launch. | 2026-08-03 | Open Dealify submit page (new tab)Dealify details |
| 306 | 80 | India SME Forum | 45 | Link type unknown | indiasmeforum.org | Communities and forums | Not stated | Moderate | High | Live, conditional | Submit a truthful MSME membership request with your tool entity, business, contact and website details. | India MSME only, executive-board approval required; verify the latest tier price before payment. | 2026-08-04 | Open India SME Forum submit page (new tab)India SME Forum details |
| 307 | 80 | NASSCOM Membership | 70 | Link type unknown | nasscom.in | Other opportunities | Not stated | Moderate | High | Live, conditional | Apply using an India-registered your tool company/startup and provide the required entity and revenue documents. | Due diligence may take 10–15 business days and include documents, calls or a site visit; membership is not guaranteed. | 2026-08-04 | Open NASSCOM Membership submit page (new tab)NASSCOM Membership details |
| 308 | 80 | SaaS Mantra | — | Link type unknown | saasmantra.com | Marketplaces and app stores | Not stated | Moderate | High | Live, conditional | Pitch a sustainable your tool lifetime or annual offer with redemption flow, onboarding, roadmap, and support capacity. | Use only if a genuine deal is financially sustainable; curation, customer support, refunds, and negotiated campaign terms apply. | 2026-08-03 | Open SaaS Mantra submit page (new tab)SaaS Mantra details |
| 309 | 80 | UiPath Marketplace | 85 | Link type unknown | uipath.com | Marketplaces and app stores | Not stated | Moderate | High | Verified live | Create a reusable UiPath automation that invokes a documented your tool workflow such as a local file privacy check and publish it under a verified profile. | Content must be functional, documented, quality-reviewed, compatible with named UiPath products, and use third-party names and assets correctly. | Official UiPath Marketplace documentation checked 2026-08-07 | Open UiPath Marketplace submit page (new tab)UiPath Marketplace details |
| 310 | 80 | Workato Community Library | 75 | Link type unknown | workato.com | Communities and forums | Not stated | Moderate | High | Live, conditional | Build a tested Workato connector for legitimate your tool triggers and actions, add clear support and usage documentation, publish it to the community library, and provide simple successful community recipes. | The connector must pass Workato review and accept the developer agreement. Remove secrets, accurately choose open- or closed-source visibility, provide support contact details, meaningful tags and docs, test every action and trigger, and maintain shared versions; do not publish a promotional shell. | 2026-08-03 | Open Workato Community Library submit page (new tab)Workato Community Library details |
| 311 | 74 | Apple App Store | 100 | Nofollow | developer.apple.com | Marketplaces and app stores | Paid | Moderate | High | Live, conditional | Ship a real your tool iOS or macOS app and add the product, support and privacy URLs in App Store Connect. | Requires Apple Developer membership, native app functionality, privacy disclosures and successful App Review. | https://developer.apple.com/app-store/submitting/ | Open Apple App Store submit page (new tab)Apple App Store details |
| 312 | 74 | Civic Tech Field Guide | 40 | Link type unknown | civictech.guide | Other opportunities | Paid | Moderate | High | Verified live | Submit only your tool tools with a clear civic or public-interest use case, using the official project name, URL, one-sentence description, accurate category, and contact email. | The project must genuinely fit civic technology or an adjacent public-interest field. Submissions enter a moderation queue; quote third-party text only with attribution and do not treat the form as a generic SaaS directory. | 2026-08-03 | Open Civic Tech Field Guide submit page (new tab)Civic Tech Field Guide details |
| 313 | 74 | CSS Weekly | 45 | Sometimes dofollow | css-weekly.com | Design galleries | Paid | Moderate | High | Verified live | Sponsor an your tool frontend, accessibility, CSS, or developer utility with a useful demo and audience-specific copy. | Official page advertises a permanent dofollow link, but paid links should be marked rel=sponsored for search-policy compliance; prioritize audience value. | https://css-weekly.com/advertise | Open CSS Weekly submit page (new tab)CSS Weekly details |
| 314 | 74 | data.world | 75 | Nofollow | data.world | Communities and forums | Paid | Moderate | High | Verified live | Publish a documented synthetic privacy, redaction, accessibility, or scam-detection benchmark dataset. | Use an appropriate licence and rich metadata; never publish proprietary, copyrighted, sensitive, or personal data. | Official data.world dataset creation documentation checked 2026-08-07 | Open data.world submit page (new tab)data.world details |
| 315 | 74 | Dense Discovery | 50 | Link type unknown | densediscovery.com | Design galleries | Paid | Moderate | High | Verified live | Promote a privacy-respecting or thoughtfully designed your tool utility through a classified or main sponsor slot. | Ads are reviewed for fit and values; links are paid placements, so measure referral value and do not treat them as PageRank endorsements. | https://www.densediscovery.com/advertise/ | Open Dense Discovery submit page (new tab)Dense Discovery details |
| 316 | 74 | Easy With AI | 35 | Link type unknown | easywithai.com | AI tool directories | Paid | Moderate | High | Verified live | Submit your tool strongest AI-powered utilities with a polished listing. | Must be a working AI tool; manual approval and refund if rejected. | https://easywithai.com/submit-tool/ | Open Easy With AI submit page (new tab)Easy With AI details |
| 317 | 74 | Freshworks Marketplace | 85 | Nofollow | freshworks.com | Marketplaces and app stores | Paid | Moderate | High | Verified live | Build a Freshdesk or Freshservice app that deliberately sends selected ticket text to an your tool PII or scam check and returns a transparent report. | A functional app must pass platform validation plus security, UX, code, documentation, privacy, and listing review. | Official Freshworks app submission documentation checked 2026-08-07 | Open Freshworks Marketplace submit page (new tab)Freshworks Marketplace details |
| 318 | 74 | Google Play | 100 | Nofollow | play.google.com | Marketplaces and app stores | Paid | Moderate | High | Live, conditional | Publish a genuine your tool Android app and use the website, support and privacy-policy fields for official links. | Developer verification, testing requirements, privacy/data-safety disclosures and Play policy compliance are required. | https://play.google.com/console/about/ | Open Google Play submit page (new tab)Google Play details |
| 319 | 74 | IAAP | 45 | Link type unknown | accessibilityassociation.org | Other opportunities | Paid | Moderate | High | Live, conditional | Enroll an eligible your tool entity as a small-organization Associate Corporate member and opt into the directory. | Approval and membership terms apply; strong fit requires genuine accessibility practice and participation. | 2026-08-04 | Open IAAP submit page (new tab)IAAP details |
| 320 | 74 | IDSA | 50 | Link type unknown | idsalliance.org | Profiles and entities | Paid | Moderate | High | Live, conditional | Choose an appropriate corporate, partner or vendor tier and apply with your tool genuine identity-security work. | Identity/security relevance and approval required; the official benefit includes an IDSA website listing. | 2026-08-04 | Open IDSA submit page (new tab)IDSA details |
| 321 | 74 | Inkscape Extension Gallery | 75 | Link type unknown | inkscape.org | Marketplaces and app stores | Paid | Moderate | High | Verified live | Publish an Inkscape extension for SVG metadata cleanup, privacy inspection, or accessible-export checks. | Upload through InkSpace and request review; provide source, licence, compatibility details, and safe code. | Official Inkscape extension gallery submission path checked 2026-08-07 | Open Inkscape Extension Gallery submit page (new tab)Inkscape Extension Gallery details |
| 322 | 74 | Kantara Initiative | 55 | Link type unknown | kantarainitiative.org | Profiles and entities | Paid | Moderate | High | Live, conditional | Use the organization signup path and participate in relevant identity, privacy or assurance working groups. | Community and standards participation are expected; membership should not be purchased solely for a backlink. | 2026-08-04 | Open Kantara Initiative submit page (new tab)Kantara Initiative details |
| 323 | 74 | Mendix Marketplace | 75 | Link type unknown | mendix.com | Marketplaces and app stores | Paid | Moderate | High | Verified live | Build a Mendix connector or module that invokes your tool on user-selected records or files and displays structured reports. | Supply package or source, screenshots, documentation, and support URLs; public content is reviewed for quality, licensing, and vulnerabilities. | Official Mendix Marketplace content submission documentation checked 2026-08-07 | Open Mendix Marketplace submit page (new tab)Mendix Marketplace details |
| 324 | 74 | MetaFilter Projects | 85 | Nofollow | metafilter.com | Design galleries | Paid | Moderate | High | Verified live | After becoming a genuine member, submit your tool as a completed web project with a plain factual description in MetaFilter Projects only. | Self-links are prohibited elsewhere; use Projects only, respect posting cadence, and participate as a community member. | Official MetaFilter Projects, FAQ, and about pages checked 2026-08-07 | Open MetaFilter Projects submit page (new tab)MetaFilter Projects details |
| 325 | 74 | MyData Global | 45 | Link type unknown | mydata.org | Other opportunities | Paid | Moderate | High | Live, conditional | Join as an eligible small business and opt in to publication of your tool organization name and profile. | Strong fit only if AltFTool commits to human-centric data-rights principles; not for backlink-only membership. | 2026-08-04 | Open MyData Global submit page (new tab)MyData Global details |
| 326 | 74 | OBS Resources | 80 | Link type unknown | obsproject.com | Marketplaces and app stores | Paid | Moderate | High | Verified live | Build an OBS privacy guard that detects exposed secrets or sensitive screen regions before streaming. | Submit through Add Resource; a forum account and moderation approval are required and review may be slow. | Official OBS plugin resource instructions checked 2026-08-07 | Open OBS Resources submit page (new tab)OBS Resources details |
| 327 | 74 | ONLYOFFICE Plugin Marketplace | 75 | Link type unknown | onlyoffice.com | Marketplaces and app stores | Paid | Moderate | High | Verified live | Build an ONLYOFFICE plugin for document redaction, metadata cleanup, or secret scanning. | Add the working plugin to the marketplace repository and submit a pull request; it must function correctly before approval. | Official ONLYOFFICE marketplace submission documentation checked 2026-08-07 | Open ONLYOFFICE Plugin Marketplace submit page (new tab)ONLYOFFICE Plugin Marketplace details |
| 328 | 74 | Open Source Collective | 40 | Link type unknown | oscollective.org | Profiles and entities | Paid | Moderate | High | Live, conditional | Apply for fiscal hosting only for a legitimate open-source your tool project or community with active development, public impact, and preferably two project administrators. | OSC reviews legitimacy, open-source alignment, and its hosting terms. It does not host an individual spanning unrelated projects; project finances become transparent and formal agreements require host approval. | 2026-08-03 | Open Open Source Collective submit page (new tab)Open Source Collective details |
| 329 | 74 | OpenID Foundation | 80 | Link type unknown | openid.net | Profiles and entities | Paid | Moderate | High | Live, conditional | Join as a small organization if your tool genuinely implements or contributes to OpenID, OAuth or related identity standards. | Standards participation and truthful brand use are expected; company name/logo visibility should not be the sole reason to join. | 2026-08-04 | Open OpenID Foundation submit page (new tab)OpenID Foundation details |
| 330 | 74 | OWASP Foundation Projects | 85 | Link type unknown | owasp.org | Software directories | Paid | Moderate | High | Live, conditional | Offer a standalone, vendor-neutral security tool or documentation project with open governance and a committed leader, then submit the official new-project request. | OWASP projects must be genuinely open source and maintained as community projects; approval is required, official source hosting is mandated, and the project page must be created within the stated onboarding period. Do not submit a branded sales funnel. | 2026-08-03 | Open OWASP Foundation Projects submit page (new tab)OWASP Foundation Projects details |
| 331 | 74 | PitchGround | 55 | Link type unknown | pitchground.com | Marketplaces and app stores | Paid | Moderate | High | Live, conditional | Create the product in PitchGround's vendor dashboard and prepare a tested redemption, onboarding, documentation, and support flow. | A functional SaaS and sustainable offer are required; review the 60-day refund maturation, payout threshold, support, and testing rules first. | 2026-08-03 | Open PitchGround submit page (new tab)PitchGround details |
| 332 | 74 | Sentry Integration Directory | 85 | Link type unknown | sentry.io | Marketplaces and app stores | Paid | Moderate | High | Verified live | Build a Sentry integration that detects PII or credentials before issue data is exported or shared. | Requires complete metadata, installation docs, support email, demo video, and an estimated four-to-five-week review. | Official Sentry public integration publication instructions checked 2026-08-07 | Open Sentry Integration Directory submit page (new tab)Sentry Integration Directory details |
| 333 | 74 | Startup Heroes | — | Link type unknown | startupheroes.io | Launch platforms | Paid | Moderate | High | Not submitted | Submit one truthful your tool launch with a working URL, concise pitch, logo, and screenshots, then respond to manual review if needed. | Automated and manual review apply; duplicate SEO submissions or vote manipulation can cause rejection and loss of refund. | 2026-08-03 | Open Startup Heroes submit page (new tab)Startup Heroes details |
| 334 | 74 | The Carpentries Incubator | 65 | Link type unknown | carpentries.org | Startup directories | Paid | Moderate | High | Verified live | Create a substantive privacy, security, or accessibility lesson using your tool exercises and propose it through the Incubator. | Lesson must be openly licensed, educational, maintainable, and non-promotional; Incubator status is not Carpentries endorsement. | Official community-lessons and lesson-developer guides checked 2026-08-05 | Open The Carpentries Incubator submit page (new tab)The Carpentries Incubator details |
| 335 | 74 | Zendesk Marketplace | 90 | Link type unknown | zendesk.com | Marketplaces and app stores | Paid | Moderate | High | Verified live | Create a Zendesk app or marketing-only integration for selected-ticket PII and scam checks with your tool support and pricing links. | Organization registration, a working app or integration, manifest, assets, privacy/support material, truthful pricing, and review are mandatory. | Official Zendesk Marketplace submission documentation checked 2026-08-07 | Open Zendesk Marketplace submit page (new tab)Zendesk Marketplace details |
| 336 | 74 | Zoho Marketplace | 90 | Link type unknown | zoho.com | Marketplaces and app stores | Paid | Moderate | High | Verified live | Build a Zoho extension for document privacy, text cleanup, or data-export checks and submit its support, policy, guide, and website links. | Public extensions require review, declared data handling, privacy policy, terms, screenshots, user documentation, and accurate pricing. | Official Zoho Sigma extension publishing documentation checked 2026-08-07 | Open Zoho Marketplace submit page (new tab)Zoho Marketplace details |
| 337 | 66 | 3D Slicer Extensions Catalog | 50 | Link type unknown | extensions.slicer.org | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Build and test a Slicer extension for medical-image de-identification, metadata inspection or privacy validation, then add its .s4ext metadata to ExtensionIndex by pull request. | Medical/scientific imaging relevance is mandatory; automated platform builds must pass and health/privacy claims need responsible validation. | 2026-08-05 | Open 3D Slicer Extensions Catalog submit page (new tab)3D Slicer Extensions Catalog details |
| 338 | 66 | ADPList | 60 | Nofollow | adplist.org | Review platforms | Free | Moderate | Medium | Verified live | Apply only if the founder or team member has real design/engineering leadership experience and intends to provide genuine mentoring, then add an accurate personal website/profile reference. | Mentor approval criteria apply and a public profile must represent a real person, expertise, availability, and service—not a company backlink. Deliver actual mentorship and disclose AltFTool affiliation. Acceptance timing, profile discovery, external-link display, and rel/follow status are not guaranteed. | 2026-08-03 | Open ADPList submit page (new tab)ADPList details |
| 339 | 66 | AI Tools Directory | — | Link type unknown | aitoolsdirectory.site | AI tool directories | Free | Moderate | Medium | Not submitted | Submit a public AI-enabled your tool utility with its official URL, correct category, pricing model and an accurate quality-focused description. | Manual review takes about 3–5 business days; product must be functional, genuinely AI-related, useful, non-duplicate and lawful; spam or misleading tools are rejected. | 2026-08-03 | Open AI Tools Directory submit page (new tab)AI Tools Directory details |
| 340 | 66 | AINative Studio Ecosystem | — | Link type unknown | ainative.studio | AI tool directories | Free | Moderate | Medium | Live, conditional | Open a pull request for a genuine AI-native your tool component with repository metadata. | AI-native open-source tool only; YAML contribution is reviewed weekly. | 2026-08-05 | Open AINative Studio Ecosystem submit page (new tab)AINative Studio Ecosystem details |
| 341 | 66 | All My Faves | 50 | Link type unknown | allmyfaves.com | Business directories | Free | Moderate | Medium | Needs checking | Submit your tool (or its blog/feed where required) under productivity, privacy or developer tools. | Human review may apply; use a natural brand title and avoid keyword stuffing. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/all-my-faves | Open All My Faves submit page (new tab)All My Faves details |
| 342 | 66 | Alltop | 75 | Nofollow | alltop.com | Business directories | Free | Moderate | Medium | Needs checking | Submit your tool (or its blog/feed where required) under productivity, privacy or developer tools. | Human review may apply; use a natural brand title and avoid keyword stuffing. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/alltop | Open Alltop submit page (new tab)Alltop details |
| 343 | 66 | Alpine Linux Packages | 70 | Link type unknown | pkgs.alpinelinux.org | Developer registries | Free | Moderate | Medium | Verified live | Package a stable your tool CLI or self-hosted helper as a tested APKBUILD, add it under Alpine testing and submit an aports merge request with accurate project metadata. | A web wrapper will not qualify; software must run usefully on Alpine, pass lint/build checks and be maintained through review and repository promotion. | 2026-08-05 | Open Alpine Linux Packages submit page (new tab)Alpine Linux Packages details |
| 344 | 66 | Amazon Appstore | 95 | Nofollow | amazon.com | Marketplaces and app stores | Free | Moderate | Medium | Live, conditional | Submit a tested your app for compatible Amazon devices with complete descriptions, support links, privacy details and store assets. | Requires a real APK/AAB or VPKG, physical-device testing, policy compliance and review; not intended for generic promotional wrappers. | 2026-08-05 official Amazon Appstore submission guide | Open Amazon Appstore submit page (new tab)Amazon Appstore details |
| 345 | 66 | Analytics Vidhya | 75 | Sometimes dofollow | analyticsvidhya.com | Publishing platforms | Free | Moderate | Medium | Needs checking | Join the writer community and publish data science or ML articles, which go through a light editorial review. | Plagiarised or AI-spun articles are rejected and links must be relevant to the topic. | Added 2026-11-01 | Open Analytics Vidhya submit page (new tab)Analytics Vidhya details |
| 346 | 66 | Android Enthusiasts | 80 | Nofollow | android.stackexchange.com | Communities and forums | Free | Moderate | Medium | Needs checking | Answer Android questions properly and add your site to your profile. | Same Stack Exchange rules: disclose affiliation and keep answers self-contained. | Added 2026-11-01 | Open Android Enthusiasts submit page (new tab)Android Enthusiasts details |
| 347 | 66 | Apps and Reports | — | Link type unknown | appsandreports.com | Software directories | Free | Moderate | Medium | Verified live | Register as your tool vendor and add its software/service profile. | Business and product information must be verifiable. | https://www.appsandreports.com/vendor-registration | Open Apps and Reports submit page (new tab)Apps and Reports details |
| 348 | 66 | ArtStation | 85 | Nofollow | artstation.com | Other opportunities | Free | Moderate | Medium | Verified live | Publish an original UI/UX visual case study showing your tool interaction design, accessibility states, and design process, with a contextual project URL. | Use ArtStation only if there is substantial original visual/design work, complete project metadata, and rights-cleared assets; it is not a generic SaaS listing. Disclose the creator's relationship to AltFTool. Projects and links are UGC, subject to platform moderation, and neither discovery nor followed-link status is guaranteed. | 2026-08-03 | Open ArtStation submit page (new tab)ArtStation details |
| 349 | 66 | arXiv | 95 | Nofollow | arxiv.org | Developer registries | Free | Moderate | Medium | Live, conditional | Submit an original your tool-related technical paper and cite your tool only where it is genuinely the software or study subject. | Requires scholarly content in an accepted category, author registration and sometimes endorsement; promotional papers are inappropriate. | https://info.arxiv.org/help/submit/index.html | Open arXiv submit page (new tab)arXiv details |
| 350 | 66 | Ask Different | 80 | Nofollow | apple.stackexchange.com | Communities and forums | Free | Moderate | Medium | Needs checking | Answer Mac and iPhone questions in full, linking your own page only when it adds detail the answer cannot hold. | Disclose that you own the linked site; link-only answers are removed. | Added 2026-11-01 | Open Ask Different submit page (new tab)Ask Different details |
| 351 | 66 | AsyncAPI Tools Dashboard | 60 | Link type unknown | asyncapi.com | Software directories | Free | Moderate | Medium | Live, conditional | If your tool ships a real tool that reads, validates, generates, visualizes, or otherwise supports AsyncAPI documents, add the required .asyncapi-tool metadata file and submit it for the public tools dashboard. | Only submit an actually usable AsyncAPI-related tool with accurate metadata, documentation, repository or supported manual entry, and maintained compatibility. A generic AltFTool product listing or promotional backlink does not qualify. | 2026-08-03 | Open AsyncAPI Tools Dashboard submit page (new tab)AsyncAPI Tools Dashboard details |
| 352 | 66 | Awesome-AITools (ikaijua) | — | Link type unknown | github.com/ikaijua/awesome-aitools | Developer registries | Free | Moderate | Medium | Needs checking | Add the AI prompt generator tools via PR in the existing table format (English + Chinese columns). | Repo explicitly welcomes PRs; bilingual format. | Added 2026-11-01 | Open Awesome-AITools (ikaijua) submit page (new tab)Awesome-AITools (ikaijua) details |
| 353 | 66 | Awesome-Design-Tools | — | Link type unknown | github.com/goabstract/awesome-design-tools | Developer registries | Free | Moderate | Medium | Needs checking | Propose the colour, image-resize and SVG tools in the matching design tool category. | High-traffic list; they reject generic all-in-one sites, so pitch a specific tool page. | Added 2026-11-01 | Open Awesome-Design-Tools submit page (new tab)Awesome-Design-Tools details |
| 354 | 66 | awesome-devtools (devtoolsd) | — | Link type unknown | github.com/devtoolsd/awesome-devtools | Developer registries | Free | Moderate | Medium | Needs checking | Submit the developer tools hub as a browser-based utilities collection. | Follow the list's alphabetical ordering rules. | Added 2026-11-01 | Open awesome-devtools (devtoolsd) submit page (new tab)awesome-devtools (devtoolsd) details |
| 355 | 66 | awesome-json | — | Link type unknown | github.com/burningtree/awesome-json | Developer registries | Free | Moderate | Medium | Needs checking | Add the AltFTool JSON formatter/validator under online tools via PR. | Maintenance can be slow; only add the specific JSON tool page. | Added 2026-11-01 | Open awesome-json submit page (new tab)awesome-json details |
| 356 | 66 | Awesome-Prompt-Engineering | — | Link type unknown | github.com/promptslab/awesome-prompt-engineering | Developer registries | Free | Moderate | Medium | Needs checking | Add the AI prompt tools to the Tools/Apps section via PR. | Research-heavy list; tools section is selective. | Added 2026-11-01 | Open Awesome-Prompt-Engineering submit page (new tab)Awesome-Prompt-Engineering details |
| 357 | 66 | awesome-web-dev-tools | — | Link type unknown | github.com/naughtyspirit/awesome-web-dev-tools | Developer registries | Free | Moderate | Medium | Needs checking | Add the developer utilities hub (encoders, formatters, minifiers) under tools. | Check last commit date before submitting. | Added 2026-11-01 | Open awesome-web-dev-tools submit page (new tab)awesome-web-dev-tools details |
| 358 | 66 | Backstage Plugin Directory | 70 | Link type unknown | backstage.io | Marketplaces and app stores | Free | Moderate | Medium | Live, conditional | Build and openly maintain a Backstage plugin that gives platform teams a real your tool workflow, then announce it through the community-plugins process and meet directory metadata requirements. | The plugin must solve a genuine developer-platform problem and follow Backstage's frontend/backend systems, design guidance, repository rules, testing, review, licensing, and release process. Create the recommended community issue before contributing; avoid a promotional shell. | 2026-08-03 | Open Backstage Plugin Directory submit page (new tab)Backstage Plugin Directory details |
| 359 | 66 | balenaHub | 65 | Link type unknown | hub.balena.io | Other opportunities | Free | Moderate | Medium | Verified live | Build a deployable edge privacy utility or reusable block, add balena.yml metadata, public source, configuration and multi-device tests, then publish it on balenaHub. | Must be a real balena app or block, link a GitHub repository, avoid embedded secrets, support claimed architectures, and maintain deployability. | Official balena apps, blocks, and balenaHub publishing docs checked 2026-08-05 | Open balenaHub submit page (new tab)balenaHub details |
| 360 | 66 | Beebom | — | Link type unknown | beebom.com | Publishing platforms | Free | Moderate | Medium | Needs checking | Pitch the India-built free tools platform for their tools/how-to articles. | Large Indian tech site; good local relevance. | Added 2026-11-01 | Open Beebom submit page (new tab)Beebom details |
| 361 | 66 | Best of Web | — | Link type unknown | bestofweb.site | Startup directories | Free | Moderate | Medium | Needs checking | Submit your tool as startup/tool; source says free dofollow. | Verify current listing requirements. | 2026-07-30 | Open Best of Web submit page (new tab)Best of Web details |
| 362 | 66 | Charmhub | 60 | Link type unknown | charmhub.io | Other opportunities | Free | Moderate | Medium | Verified live | Package a maintained self-hosted your tool deployment as a Juju charm with canonical documentation, source, and support links. | Register the charm name, upload and release a tested charm; formal community review is required for search visibility. | Official Charmcraft charm management documentation checked 2026-08-07 | Open Charmhub submit page (new tab)Charmhub details |
| 363 | 66 | Cinnamon Spices | 60 | Link type unknown | cinnamon-spices.linuxmint.com | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Build a maintained Cinnamon applet that launches or monitors a useful local your tool privacy workflow and submit it by pull request. | Must follow the UUID/file structure, include info.json, screenshot and functional code, pass validate-spice, contain no malicious behavior, and pass team review. | 2026-08-05 — https://github.com/linuxmint/cinnamon-spices-applets | Open Cinnamon Spices submit page (new tab)Cinnamon Spices details |
| 364 | 66 | CK-12 FlexBooks | 80 | Link type unknown | ck12.org | Other opportunities | Free | Moderate | Medium | Verified live | Create an age-appropriate digital-citizenship or privacy FlexBook chapter with practical your tool exercises. | Must be substantive K-12 educational content with correct authorship; do not create a product-only page. | 2026-08-05 — https://help.ck12.org/hc/en-us/articles/200448244-How-to-Customize-a-FlexBook-Textbook-or-Read-Modality | Open CK-12 FlexBooks submit page (new tab)CK-12 FlexBooks details |
| 365 | 66 | Codidact Power Users | 40 | Nofollow | codidact.org | Software directories | Free | Moderate | Medium | Verified live | Answer real end-user software or privacy questions in depth and reference a specific your tool page only when it materially completes the answer. | Disclose affiliation; irrelevant or undisclosed product promotion is spam, and manufactured questions or generic link drops are prohibited. | Official Codidact signup and help guidance checked 2026-08-07 | Open Codidact Power Users submit page (new tab)Codidact Power Users details |
| 366 | 66 | Come AI | — | Link type unknown | iatool.online | AI tool directories | Free | Moderate | Medium | Not submitted | Submit a specific AI-powered your tool utility with its official URL, category and a factual description for editorial review. | AI tools only; every submission is reviewed; featured placement is paid and should not be described as an independent recommendation. | 2026-08-03 | Open Come AI submit page (new tab)Come AI details |
| 367 | 66 | Cool Tools (kk.org) | — | Link type unknown | kk.org | Publishing platforms | Free | Moderate | Medium | Needs checking | Submit a reader-style recommendation of the step counter or PDF tools explaining real use. | Editorial; must be a genuine, useful recommendation, not an ad. | Added 2026-11-01 | Open Cool Tools (kk.org) submit page (new tab)Cool Tools (kk.org) details |
| 368 | 66 | Coolify One-Click Services | 60 | Link type unknown | coolify.io | Other opportunities | Free | Moderate | Medium | Verified live | Create and fully test an your tool Docker Compose service template, add metadata, logo, and documentation, then submit it to Coolify's next branch. | The upstream Git repository currently needs at least 1,000 stars; template, secrets, storage, port, docs, and review rules apply. | Official Coolify service-contribution guide checked 2026-08-05 | Open Coolify One-Click Services submit page (new tab)Coolify One-Click Services details |
| 369 | 66 | CrazyGames Developer Portal | 70 | Link type unknown | crazygames.com | Marketplaces and app stores | Free | Moderate | Medium | Needs checking | Upload a finished HTML5 game through the developer portal; it goes through a playtest phase before a full release, and the game page credits you as the developer. | Games are reviewed for quality and must run in the browser; integrating their SDK is needed for ad revenue share. | Added 2026-11-01 | Open CrazyGames Developer Portal submit page (new tab)CrazyGames Developer Portal details |
| 370 | 66 | Creative Fabrica | 75 | Nofollow | creativefabrica.com | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Apply as a designer and publish an original template, icon pack or printable that genuinely complements an your tool workflow. | Products are reviewed and must be owned and licensed by the seller; personal contact details and unauthorized external links are restricted in product listings. | 2026-08-03 | Open Creative Fabrica submit page (new tab)Creative Fabrica details |
| 371 | 66 | Creative Market | 85 | Nofollow | creativemarket.com | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Apply with a strong portfolio and sell an original your tool-compatible template or design kit, using permitted shop branding and product documentation. | Shop approval requires a portfolio; products must be original, properly licensed and commercially useful. External-link placement is controlled by marketplace rules. | 2026-08-03 | Open Creative Market submit page (new tab)Creative Market details |
| 372 | 66 | Curlie | 80 | Dofollow | curlie.org | Business directories | Free | Moderate | Medium | Needs checking | Submit your tool (or its blog/feed where required) under productivity, privacy or developer tools. | Human review may apply; use a natural brand title and avoid keyword stuffing. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/curlie | Open Curlie submit page (new tab)Curlie details |
| 373 | 66 | dbt Package Hub | 65 | Link type unknown | hub.getdbt.com | Developer registries | Free | Moderate | Medium | Verified live | Build a useful dbt package for privacy classification, redaction tests or data-governance macros and add it to the Hub index by pull request. | Must be a functional versioned dbt package with accurate package metadata, public source and releases; Hub index PR and automated compatibility checks apply. | 2026-08-05 — https://github.com/dbt-labs/hub.getdbt.com | Open dbt Package Hub submit page (new tab)dbt Package Hub details |
| 374 | 66 | Developers Italia | 55 | Link type unknown | developers.italia.it | Software directories | Free | Moderate | Medium | Live, conditional | If an your tool component is open source and genuinely targeted at public administration, add valid publiccode.yml metadata so the catalogue crawler can discover it. | Catalogue is for software released by public administrations or third-party open source aimed at the public sector; metadata claims are self-declared and must be accurate. | 2026-08-05 official Developers Italia Get Involved and publiccode.yml guidance | Open Developers Italia submit page (new tab)Developers Italia details |
| 375 | 66 | devRant | 60 | Nofollow | devrant.com | Profiles and entities | Free | Moderate | Medium | Verified live | Participate as a real developer with original lessons and honest build stories; reference your tool only if a specific discussion genuinely calls for the working example. | devRant treats accounts whose posts/comments mainly consist of links, duplicates, misleading identities, random comments, or purchased interactions as spam. Do not use a business name to mislead, disclose affiliation, and contribute without expecting a backlink. All links/posts are moderated UGC with no indexing or followed-link guarantee. | 2026-08-03 | Open devRant submit page (new tab)devRant details |
| 376 | 66 | DevShowcase | — | Link type unknown | devshowcase.dev | Design galleries | Free | Moderate | Medium | Verified live | Sign in with GitHub or Google and add your tool as a real portfolio project with tech stack. | Use an authentic developer identity and substantive project information. | 2026-08-03 | Open DevShowcase submit page (new tab)DevShowcase details |
| 377 | 66 | DHIS2 App Hub | 55 | Link type unknown | apps.dhis2.org | Software directories | Free | Moderate | Medium | Verified live | Build a generic DHIS2 health-data de-identification or permission-audit app and submit it to App Hub for core-team review. | Must be useful across DHIS2 implementations, open source, documented, secure, performant, and free of advertising or hidden collection. | Official DHIS2 App Hub publishing and review guidelines checked 2026-08-05 | Open DHIS2 App Hub submit page (new tab)DHIS2 App Hub details |
| 378 | 66 | Discourse Meta | 80 | Nofollow | discourse.org | Profiles and entities | Free | Moderate | Medium | Verified live | Use a real developer profile and contribute tested solutions on Discourse integrations, accessibility, or privacy only when the team has genuine implementation experience. | Meta is for improving Discourse discussions, not promoting AltFTool; spam, cross-posting, work solicitation outside Marketplace, and pasted AI replies are prohibited. Link only when essential, disclose affiliation, and never sign posts with promotional copy. Posts/profile links are moderated UGC with no permanence or followed-link guarantee. | 2026-08-03 | Open Discourse Meta submit page (new tab)Discourse Meta details |
| 379 | 66 | Docusaurus Showcase | 75 | Link type unknown | docusaurus.io | Design galleries | Free | Moderate | Medium | Live, conditional | If your tool documentation genuinely runs on Docusaurus, add the polished docs site through the official showcase discussion. | Framework use is mandatory; maintain a polished live site and follow the current GitHub discussion template. | 2026-08-05 | Open Docusaurus Showcase submit page (new tab)Docusaurus Showcase details |
| 380 | 66 | Ecwid App Market | 80 | Nofollow | ecwid.com | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Build an your tool Ecwid app, propose it, sign the partner agreement, and submit it for review with website and support links. | Requires a real public app, partner contract, review, support, and eligible legal and payments setup; listing is not guaranteed. | Official Ecwid public app overview checked 2026-08-07 | Open Ecwid App Market submit page (new tab)Ecwid App Market details |
| 381 | 66 | EdTech Books | 55 | Link type unknown | edtechbooks.org | Publishing platforms | Free | Moderate | Medium | Verified live | Create a structured open handbook on digital privacy or accessibility with reproducible your tool labs. | Use the publication workflow for a substantive book or proceedings item, clear all rights, and avoid thin SEO content. | 2026-08-05 — https://edtechbooks.s3.us-west-2.amazonaws.com/pdfs/40/3135.pdf | Open EdTech Books submit page (new tab)EdTech Books details |
| 382 | 66 | Educators Technology | — | Link type unknown | educatorstechnology.com | Publishing platforms | Free | Moderate | Medium | Needs checking | Pitch the free tools for their teacher tool roundups. | Contact the editor; roundups are frequent. | Added 2026-11-01 | Open Educators Technology submit page (new tab)Educators Technology details |
| 383 | 66 | ELIXIR TeSS | 45 | Link type unknown | tess.elixir-europe.org | Other opportunities | Free | Moderate | Medium | Verified live | Register a substantive life-science privacy, medical-data de-identification, or research-data training resource hosted by your tool. | Content must be relevant to life sciences or an adjacent field; account and accurate metadata required, while harvested providers need admin approval. | 2026-08-05 — https://tess.elixir-europe.org/about/registering | Open ELIXIR TeSS submit page (new tab)ELIXIR TeSS details |
| 384 | 66 | Espanso Hub | 50 | Link type unknown | espanso.org | Developer registries | Free | Moderate | Medium | Verified live | Create a genuinely useful package of tested security-header, HTML-meta, JSON-LD and webhook snippets with your tool validation examples, then submit it to the official Hub. | Every package receives CI and human review, with extra scrutiny for scripts; avoid promotional expansions and any shell action that could harm users. | 2026-08-05 | Open Espanso Hub submit page (new tab)Espanso Hub details |
| 385 | 66 | EVERSE Research Software Quality Kit | — | Link type unknown | everse.software | Software directories | Free | Moderate | Medium | Verified live | Discuss a substantive your tool-backed research-software quality task or resource with the Editorial Board, then contribute through its approved workflow. | Significant content should be discussed first; contribution must teach reusable practice rather than advertise. | Official RSQKit contribution and editorial guides checked 2026-08-05 | Open EVERSE Research Software Quality Kit submit page (new tab)EVERSE Research Software Quality Kit details |
| 386 | 66 | FAIRsharing | 60 | Link type unknown | fairsharing.org | Other opportunities | Free | Moderate | Medium | Verified live | Submit a genuine your tool-maintained database, reusable reporting standard, or data policy with complete stewardship metadata. | Generic software and individual datasets are out of scope; record type must match FAIRsharing scope and is curated. | 2026-08-05 — https://fairsharing.org/new/ | Open FAIRsharing submit page (new tab)FAIRsharing details |
| 387 | 66 | Fedora COPR | 70 | Link type unknown | copr.fedorainfracloud.org | Developer registries | Free | Moderate | Medium | Verified live | Create a COPR project, build maintained RPMs and add the official your tool homepage and package documentation. | COPR is a build service rather than Fedora's main repository; provide legitimate source RPMs and support them. | Official Fedora Developer Portal checked 2026-07-30 | Open Fedora COPR submit page (new tab)Fedora COPR details |
| 388 | 66 | FileHippo | 85 | Nofollow | filehippo.com | Software directories | Free | Moderate | Medium | Needs checking | Contact them to have your Windows or Mac software added to the catalogue. | Editorial choice; files are scanned before listing. | Added 2026-11-01 | Open FileHippo submit page (new tab)FileHippo details |
| 389 | 66 | FileHorse | 70 | Link type unknown | filehorse.com | Software directories | Free | Moderate | Medium | Needs checking | Send your Windows or Mac software for review via their submission or contact page. | Editors only list software they consider useful and clean. | Added 2026-11-01 | Open FileHorse submit page (new tab)FileHorse details |
| 390 | 66 | Firefox Add-ons | 95 | Nofollow | addons.mozilla.org | Marketplaces and app stores | Free | Moderate | Medium | Not submitted | Publish privacy/helper extension. | Requires real extension and Mozilla review. | 2026-07-30 | Open Firefox Add-ons submit page (new tab)Firefox Add-ons details |
| 391 | 66 | Flathub | 75 | Nofollow | flathub.org | Marketplaces and app stores | Free | Moderate | Medium | Live, conditional | Submit a mature graphical Linux your app with verified metadata, screenshots, homepage and source links. | Strictly requires a functional Flatpak; current Flathub policy disallows generative-AI-assisted submission code, content and review comments. | Official Flathub submission docs checked 2026-07-30 | Open Flathub submit page (new tab)Flathub details |
| 392 | 66 | Free Technology for Teachers | — | Link type unknown | freetech4teachers.com | Publishing platforms | Free | Moderate | Medium | Needs checking | Pitch one classroom-useful tool (e.g., PDF merge) with a short use case. | Popular teacher blog; selective. | Added 2026-11-01 | Open Free Technology for Teachers submit page (new tab)Free Technology for Teachers details |
| 393 | 66 | free-for-dev | — | Link type unknown | github.com/ripienaar/free-for-dev | Developer registries | Free | Moderate | Medium | Needs checking | Only if a developer-facing free tier fits (e.g., an API), add it under the right section with the exact free limits. | Strict rules: SaaS free tiers for devs only; plain tool sites are usually rejected. | Added 2026-11-01 | Open free-for-dev submit page (new tab)free-for-dev details |
| 394 | 66 | FreeCAD Addons | 70 | Link type unknown | freecad.org | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Build an open-source FreeCAD privacy/metadata or document-cleanup workbench, add package.xml metadata, and submit it to the curated Addons index. | Must be a real installable FreeCAD addon with supported license, repository metadata, docs and compatibility; catalog acceptance/review required. | 2026-08-05 — https://github.com/FreeCAD/FreeCAD-macros | Open FreeCAD Addons submit page (new tab)FreeCAD Addons details |
| 395 | 66 | FSF Free Software Directory | 85 | Link type unknown | fsf.org | Software directories | Free | Moderate | Medium | Not submitted | Release a genuinely free-software your tool desktop or self-hosted component with free documentation and transparent downloads, then submit a custom directory entry. | Software must meet FSF freedom, documentation and GNU/free-OS requirements and pass administrator review; the web-only proprietary service is not eligible by itself. | 2026-08-03 | Open FSF Free Software Directory submit page (new tab)FSF Free Software Directory details |
| 396 | 66 | gHacks | — | Link type unknown | ghacks.net | Publishing platforms | Free | Moderate | Medium | Needs checking | Send a tip about the browser extension or a useful web tool. | Software-focused blog; tips via contact page. | Added 2026-11-01 | Open gHacks submit page (new tab)gHacks details |
| 397 | 66 | Glide Template Store | 70 | Nofollow | glideapps.com | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Publish a substantive Glide template for privacy-safe records, evidence organization, or accessibility audits and link its your tool documentation where permitted. | The template must be original, reusable, polished, documented, privacy-safe, and pass review; a promotional shell will not qualify. | Official Glide template publishing guide and Template Store terms checked 2026-08-07 | Open Glide Template Store submit page (new tab)Glide Template Store details |
| 398 | 66 | GNOME Shell Extensions | 75 | Link type unknown | extensions.gnome.org | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Create a narrowly useful GNOME Shell extension, provide metadata and homepage or source information, and submit it for review. | Must be GNOME Shell-specific, safe and policy-compliant; manual review queues can be slow. | Official GNOME extension review page checked 2026-07-30 | Open GNOME Shell Extensions submit page (new tab)GNOME Shell Extensions details |
| 399 | 66 | GovStack | 45 | Link type unknown | govstack.global | Other opportunities | Free | Moderate | Medium | Verified live | Join a working group and contribute a substantive building-block specification, use case, reference implementation or new proposal. | Needs sustained expert contribution; Apache-2.0/IP terms apply; link must be directly relevant to the implementation. | 2026-08-05 — https://specs.govstack.global/overview/25q2-1/contributing | Open GovStack submit page (new tab)GovStack details |
| 400 | 66 | Gradle Plugin Portal | 80 | Link type unknown | gradle.org | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Ship a genuinely useful Gradle plugin for an your tool developer check such as secret, licence, or configuration auditing; publish with your tool documentation and support URLs. | Initial version is manually reviewed; the plugin needs real functionality, broad usefulness, public documentation, and accurate compatibility declarations. | Official Gradle Plugin Portal publishing documentation checked 2026-08-07 | Open Gradle Plugin Portal submit page (new tab)Gradle Plugin Portal details |
How to build backlinks with this list
Four steps that work for a new site, a SaaS or a side project. No paid link packages, nothing that risks a penalty.
Get the basics right first
Before submitting anywhere, have a one-line description, a 150-word description, a square logo and two or three screenshots ready. Every form asks for some mix of these.
Claim profiles and free listings
Start with the free, quick rows: profile creation sites and free directories. They are one form each and build the entity signals search engines use to understand who you are.
Go after a few strong links
Then pick a handful of high DA and dofollow sites that fit your niche, and write proper guest posts or launch posts for them. Ten relevant links beat a hundred random ones.
Track and keep it clean
Note where you submitted and when. Recheck after a month, update stale descriptions, and never pay for bulk link packages: they put the whole site at risk.
Behind the list
A link opportunity is not a link.
Every row here starts as a line in a sheet, gets normalised into one of 16 groups, scored for cost, effort and impact, and written up with the steps to actually submit. The floor below represents that pipeline.
Open the sheet viewAn illustration of the AltF Backlinks floor: opportunities sourced at the back, vetted for cost and effort by the engineering pod, written up for outreach by the design pod, then tracked to placement along a line.
Backlink sites by category
One-shot launches where timing and preparation decide the outcome.
Publications that accept contributed articles. Slow and editorial, but the links are earned.
Fast-growing listings specifically for AI-powered tools.
Extension, plugin and integration stores. Real review processes, real distribution.
Startup listings, beta lists and founder media.
General tool and software catalogues with real search traffic.
B2B review sites. Slow to approve, strong once live.
Package, image and docs hosting that carries real authority.
Showcases judged on craft. A good screenshot matters more than copy.
Write once, link back. Editorial standards vary widely.
Get quoted or distribute a release. Slower, higher ceiling.
Company and local listings. Unglamorous, consistently indexed.
Owned pages you control: company, founder, knowledge-panel entities.
Answer real questions. Never drop a bare link.
Brand surface and referral traffic more than link equity.
Everything that does not fit the buckets above.