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AltF Backlinks

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

301–400 of 1,033 opportunities

The table is wider than the screen — swipe it sideways for cost, effort and the preparation notes.

Submission opportunities with impact score, cost, effort, priority, status and preparation notes. Scroll horizontally for all columns.
#Impact (sorted)Site — sort by thisEst. DA — sort by thisLinkDomainTypeCostEffort — sort by thisPriorityStatusWhat to prepareRules / caveatCheckedActions
30181ToolDirectory.AI—Link type unknowntooldirectory.aiAI tool directoriesFree + paid tierModerateHighNot submittedSubmit 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-toolOpen ToolDirectory.AI submit page (new tab)ToolDirectory.AI details
30281ToolScout—Link type unknowntoolscout.aiAI tool directoriesFree + paid tierModerateHighNot submittedSubmit AI feature; free listing reviewed by human.Sign-in needed; human review 24-48h stated.2026-07-30Open ToolScout submit page (new tab)ToolScout details
30380Albato App Integrator50Link type unknownalbato.comMarketplaces and app storesNot statedModerateHighLive, conditionalBuild 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.2026-08-05Open Albato App Integrator submit page (new tab)Albato App Integrator details
30480Databricks Marketplace85Nofollowdatabricks.comMarketplaces and app storesNot statedModerateHighVerified livePublish 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 2026-08-07Open Databricks Marketplace submit page (new tab)Databricks Marketplace details
30580Dealify45Link type unknowndealify.comMarketplaces and app storesNot statedModerateHighLive, conditionalPropose 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.2026-08-03Open Dealify submit page (new tab)Dealify details
30680India SME Forum45Link type unknownindiasmeforum.orgCommunities and forumsNot statedModerateHighLive, conditionalSubmit 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.2026-08-04Open India SME Forum submit page (new tab)India SME Forum details
30780NASSCOM Membership70Link type unknownnasscom.inOther opportunitiesNot statedModerateHighLive, conditionalApply 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.2026-08-04Open NASSCOM Membership submit page (new tab)NASSCOM Membership details
30880SaaS Mantra—Link type unknownsaasmantra.comMarketplaces and app storesNot statedModerateHighLive, conditionalPitch 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.2026-08-03Open SaaS Mantra submit page (new tab)SaaS Mantra details
30980UiPath Marketplace85Link type unknownuipath.comMarketplaces and app storesNot statedModerateHighVerified liveCreate 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 2026-08-07Open UiPath Marketplace submit page (new tab)UiPath Marketplace details
31080Workato Community Library75Link type unknownworkato.comCommunities and forumsNot statedModerateHighLive, conditionalBuild 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.2026-08-03Open Workato Community Library submit page (new tab)Workato Community Library details
31174Apple App Store100Nofollowdeveloper.apple.comMarketplaces and app storesPaidModerateHighLive, conditionalShip 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
31274Civic Tech Field Guide40Link type unknowncivictech.guideOther opportunitiesPaidModerateHighVerified liveSubmit 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.2026-08-03Open Civic Tech Field Guide submit page (new tab)Civic Tech Field Guide details
31374CSS Weekly45Sometimes dofollowcss-weekly.comDesign galleriesPaidModerateHighVerified liveSponsor 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/advertiseOpen CSS Weekly submit page (new tab)CSS Weekly details
31474data.world75Nofollowdata.worldCommunities and forumsPaidModerateHighVerified livePublish 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 2026-08-07Open data.world submit page (new tab)data.world details
31574Dense Discovery50Link type unknowndensediscovery.comDesign galleriesPaidModerateHighVerified livePromote 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
31674Easy With AI35Link type unknowneasywithai.comAI tool directoriesPaidModerateHighVerified liveSubmit 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
31774Freshworks Marketplace85Nofollowfreshworks.comMarketplaces and app storesPaidModerateHighVerified liveBuild 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 2026-08-07Open Freshworks Marketplace submit page (new tab)Freshworks Marketplace details
31874Google Play100Nofollowplay.google.comMarketplaces and app storesPaidModerateHighLive, conditionalPublish 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
31974IAAP45Link type unknownaccessibilityassociation.orgOther opportunitiesPaidModerateHighLive, conditionalEnroll 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.2026-08-04Open IAAP submit page (new tab)IAAP details
32074IDSA50Link type unknownidsalliance.orgProfiles and entitiesPaidModerateHighLive, conditionalChoose 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.2026-08-04Open IDSA submit page (new tab)IDSA details
32174Inkscape Extension Gallery75Link type unknowninkscape.orgMarketplaces and app storesPaidModerateHighVerified livePublish 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 2026-08-07Open Inkscape Extension Gallery submit page (new tab)Inkscape Extension Gallery details
32274Kantara Initiative55Link type unknownkantarainitiative.orgProfiles and entitiesPaidModerateHighLive, conditionalUse 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.2026-08-04Open Kantara Initiative submit page (new tab)Kantara Initiative details
32374Mendix Marketplace75Link type unknownmendix.comMarketplaces and app storesPaidModerateHighVerified liveBuild 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 2026-08-07Open Mendix Marketplace submit page (new tab)Mendix Marketplace details
32474MetaFilter Projects85Nofollowmetafilter.comDesign galleriesPaidModerateHighVerified liveAfter 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 2026-08-07Open MetaFilter Projects submit page (new tab)MetaFilter Projects details
32574MyData Global45Link type unknownmydata.orgOther opportunitiesPaidModerateHighLive, conditionalJoin 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.2026-08-04Open MyData Global submit page (new tab)MyData Global details
32674OBS Resources80Link type unknownobsproject.comMarketplaces and app storesPaidModerateHighVerified liveBuild 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 2026-08-07Open OBS Resources submit page (new tab)OBS Resources details
32774ONLYOFFICE Plugin Marketplace75Link type unknownonlyoffice.comMarketplaces and app storesPaidModerateHighVerified liveBuild 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 2026-08-07Open ONLYOFFICE Plugin Marketplace submit page (new tab)ONLYOFFICE Plugin Marketplace details
32874Open Source Collective40Link type unknownoscollective.orgProfiles and entitiesPaidModerateHighLive, conditionalApply 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.2026-08-03Open Open Source Collective submit page (new tab)Open Source Collective details
32974OpenID Foundation80Link type unknownopenid.netProfiles and entitiesPaidModerateHighLive, conditionalJoin 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.2026-08-04Open OpenID Foundation submit page (new tab)OpenID Foundation details
33074OWASP Foundation Projects85Link type unknownowasp.orgSoftware directoriesPaidModerateHighLive, conditionalOffer 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.2026-08-03Open OWASP Foundation Projects submit page (new tab)OWASP Foundation Projects details
33174PitchGround55Link type unknownpitchground.comMarketplaces and app storesPaidModerateHighLive, conditionalCreate 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.2026-08-03Open PitchGround submit page (new tab)PitchGround details
33274Sentry Integration Directory85Link type unknownsentry.ioMarketplaces and app storesPaidModerateHighVerified liveBuild 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 2026-08-07Open Sentry Integration Directory submit page (new tab)Sentry Integration Directory details
33374Startup Heroes—Link type unknownstartupheroes.ioLaunch platformsPaidModerateHighNot submittedSubmit 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.2026-08-03Open Startup Heroes submit page (new tab)Startup Heroes details
33474The Carpentries Incubator65Link type unknowncarpentries.orgStartup directoriesPaidModerateHighVerified liveCreate 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 2026-08-05Open The Carpentries Incubator submit page (new tab)The Carpentries Incubator details
33574Zendesk Marketplace90Link type unknownzendesk.comMarketplaces and app storesPaidModerateHighVerified liveCreate 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 2026-08-07Open Zendesk Marketplace submit page (new tab)Zendesk Marketplace details
33674Zoho Marketplace90Link type unknownzoho.comMarketplaces and app storesPaidModerateHighVerified liveBuild 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 2026-08-07Open Zoho Marketplace submit page (new tab)Zoho Marketplace details
337663D Slicer Extensions Catalog50Link type unknownextensions.slicer.orgMarketplaces and app storesFreeModerateMediumVerified liveBuild 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.2026-08-05Open 3D Slicer Extensions Catalog submit page (new tab)3D Slicer Extensions Catalog details
33866ADPList60Nofollowadplist.orgReview platformsFreeModerateMediumVerified liveApply 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.2026-08-03Open ADPList submit page (new tab)ADPList details
33966AI Tools Directory—Link type unknownaitoolsdirectory.siteAI tool directoriesFreeModerateMediumNot submittedSubmit 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.2026-08-03Open AI Tools Directory submit page (new tab)AI Tools Directory details
34066AINative Studio Ecosystem—Link type unknownainative.studioAI tool directoriesFreeModerateMediumLive, conditionalOpen 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.2026-08-05Open AINative Studio Ecosystem submit page (new tab)AINative Studio Ecosystem details
34166All My Faves50Link type unknownallmyfaves.comBusiness directoriesFreeModerateMediumNeeds checkingSubmit 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-favesOpen All My Faves submit page (new tab)All My Faves details
34266Alltop75Nofollowalltop.comBusiness directoriesFreeModerateMediumNeeds checkingSubmit 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/alltopOpen Alltop submit page (new tab)Alltop details
34366Alpine Linux Packages70Link type unknownpkgs.alpinelinux.orgDeveloper registriesFreeModerateMediumVerified livePackage 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.2026-08-05Open Alpine Linux Packages submit page (new tab)Alpine Linux Packages details
34466Amazon Appstore95Nofollowamazon.comMarketplaces and app storesFreeModerateMediumLive, conditionalSubmit 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 guideOpen Amazon Appstore submit page (new tab)Amazon Appstore details
34566Analytics Vidhya75Sometimes dofollowanalyticsvidhya.comPublishing platformsFreeModerateMediumNeeds checkingJoin 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 2026-11-01Open Analytics Vidhya submit page (new tab)Analytics Vidhya details
34666Android Enthusiasts80Nofollowandroid.stackexchange.comCommunities and forumsFreeModerateMediumNeeds checkingAnswer Android questions properly and add your site to your profile.Same Stack Exchange rules: disclose affiliation and keep answers self-contained.Added 2026-11-01Open Android Enthusiasts submit page (new tab)Android Enthusiasts details
34766Apps and Reports—Link type unknownappsandreports.comSoftware directoriesFreeModerateMediumVerified liveRegister as your tool vendor and add its software/service profile.Business and product information must be verifiable.https://www.appsandreports.com/vendor-registrationOpen Apps and Reports submit page (new tab)Apps and Reports details
34866ArtStation85Nofollowartstation.comOther opportunitiesFreeModerateMediumVerified livePublish 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.2026-08-03Open ArtStation submit page (new tab)ArtStation details
34966arXiv95Nofollowarxiv.orgDeveloper registriesFreeModerateMediumLive, conditionalSubmit 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.htmlOpen arXiv submit page (new tab)arXiv details
35066Ask Different80Nofollowapple.stackexchange.comCommunities and forumsFreeModerateMediumNeeds checkingAnswer 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 2026-11-01Open Ask Different submit page (new tab)Ask Different details
35166AsyncAPI Tools Dashboard60Link type unknownasyncapi.comSoftware directoriesFreeModerateMediumLive, conditionalIf 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.2026-08-03Open AsyncAPI Tools Dashboard submit page (new tab)AsyncAPI Tools Dashboard details
35266Awesome-AITools (ikaijua)—Link type unknowngithub.com/ikaijua/awesome-aitoolsDeveloper registriesFreeModerateMediumNeeds checkingAdd the AI prompt generator tools via PR in the existing table format (English + Chinese columns).Repo explicitly welcomes PRs; bilingual format.Added 2026-11-01Open Awesome-AITools (ikaijua) submit page (new tab)Awesome-AITools (ikaijua) details
35366Awesome-Design-Tools—Link type unknowngithub.com/goabstract/awesome-design-toolsDeveloper registriesFreeModerateMediumNeeds checkingPropose 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 2026-11-01Open Awesome-Design-Tools submit page (new tab)Awesome-Design-Tools details
35466awesome-devtools (devtoolsd)—Link type unknowngithub.com/devtoolsd/awesome-devtoolsDeveloper registriesFreeModerateMediumNeeds checkingSubmit the developer tools hub as a browser-based utilities collection.Follow the list's alphabetical ordering rules.Added 2026-11-01Open awesome-devtools (devtoolsd) submit page (new tab)awesome-devtools (devtoolsd) details
35566awesome-json—Link type unknowngithub.com/burningtree/awesome-jsonDeveloper registriesFreeModerateMediumNeeds checkingAdd the AltFTool JSON formatter/validator under online tools via PR.Maintenance can be slow; only add the specific JSON tool page.Added 2026-11-01Open awesome-json submit page (new tab)awesome-json details
35666Awesome-Prompt-Engineering—Link type unknowngithub.com/promptslab/awesome-prompt-engineeringDeveloper registriesFreeModerateMediumNeeds checkingAdd the AI prompt tools to the Tools/Apps section via PR.Research-heavy list; tools section is selective.Added 2026-11-01Open Awesome-Prompt-Engineering submit page (new tab)Awesome-Prompt-Engineering details
35766awesome-web-dev-tools—Link type unknowngithub.com/naughtyspirit/awesome-web-dev-toolsDeveloper registriesFreeModerateMediumNeeds checkingAdd the developer utilities hub (encoders, formatters, minifiers) under tools.Check last commit date before submitting.Added 2026-11-01Open awesome-web-dev-tools submit page (new tab)awesome-web-dev-tools details
35866Backstage Plugin Directory70Link type unknownbackstage.ioMarketplaces and app storesFreeModerateMediumLive, conditionalBuild 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.2026-08-03Open Backstage Plugin Directory submit page (new tab)Backstage Plugin Directory details
35966balenaHub65Link type unknownhub.balena.ioOther opportunitiesFreeModerateMediumVerified liveBuild 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 2026-08-05Open balenaHub submit page (new tab)balenaHub details
36066Beebom—Link type unknownbeebom.comPublishing platformsFreeModerateMediumNeeds checkingPitch the India-built free tools platform for their tools/how-to articles.Large Indian tech site; good local relevance.Added 2026-11-01Open Beebom submit page (new tab)Beebom details
36166Best of Web—Link type unknownbestofweb.siteStartup directoriesFreeModerateMediumNeeds checkingSubmit your tool as startup/tool; source says free dofollow.Verify current listing requirements.2026-07-30Open Best of Web submit page (new tab)Best of Web details
36266Charmhub60Link type unknowncharmhub.ioOther opportunitiesFreeModerateMediumVerified livePackage 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 2026-08-07Open Charmhub submit page (new tab)Charmhub details
36366Cinnamon Spices60Link type unknowncinnamon-spices.linuxmint.comMarketplaces and app storesFreeModerateMediumVerified liveBuild 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-appletsOpen Cinnamon Spices submit page (new tab)Cinnamon Spices details
36466CK-12 FlexBooks80Link type unknownck12.orgOther opportunitiesFreeModerateMediumVerified liveCreate 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-ModalityOpen CK-12 FlexBooks submit page (new tab)CK-12 FlexBooks details
36566Codidact Power Users40Nofollowcodidact.orgSoftware directoriesFreeModerateMediumVerified liveAnswer 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 2026-08-07Open Codidact Power Users submit page (new tab)Codidact Power Users details
36666Come AI—Link type unknowniatool.onlineAI tool directoriesFreeModerateMediumNot submittedSubmit 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.2026-08-03Open Come AI submit page (new tab)Come AI details
36766Cool Tools (kk.org)—Link type unknownkk.orgPublishing platformsFreeModerateMediumNeeds checkingSubmit 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 2026-11-01Open Cool Tools (kk.org) submit page (new tab)Cool Tools (kk.org) details
36866Coolify One-Click Services60Link type unknowncoolify.ioOther opportunitiesFreeModerateMediumVerified liveCreate 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 2026-08-05Open Coolify One-Click Services submit page (new tab)Coolify One-Click Services details
36966CrazyGames Developer Portal70Link type unknowncrazygames.comMarketplaces and app storesFreeModerateMediumNeeds checkingUpload 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 2026-11-01Open CrazyGames Developer Portal submit page (new tab)CrazyGames Developer Portal details
37066Creative Fabrica75Nofollowcreativefabrica.comMarketplaces and app storesFreeModerateMediumVerified liveApply 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.2026-08-03Open Creative Fabrica submit page (new tab)Creative Fabrica details
37166Creative Market85Nofollowcreativemarket.comMarketplaces and app storesFreeModerateMediumVerified liveApply 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.2026-08-03Open Creative Market submit page (new tab)Creative Market details
37266Curlie80Dofollowcurlie.orgBusiness directoriesFreeModerateMediumNeeds checkingSubmit 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/curlieOpen Curlie submit page (new tab)Curlie details
37366dbt Package Hub65Link type unknownhub.getdbt.comDeveloper registriesFreeModerateMediumVerified liveBuild 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.comOpen dbt Package Hub submit page (new tab)dbt Package Hub details
37466Developers Italia55Link type unknowndevelopers.italia.itSoftware directoriesFreeModerateMediumLive, conditionalIf 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 guidanceOpen Developers Italia submit page (new tab)Developers Italia details
37566devRant60Nofollowdevrant.comProfiles and entitiesFreeModerateMediumVerified liveParticipate 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.2026-08-03Open devRant submit page (new tab)devRant details
37666DevShowcase—Link type unknowndevshowcase.devDesign galleriesFreeModerateMediumVerified liveSign 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.2026-08-03Open DevShowcase submit page (new tab)DevShowcase details
37766DHIS2 App Hub55Link type unknownapps.dhis2.orgSoftware directoriesFreeModerateMediumVerified liveBuild 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 2026-08-05Open DHIS2 App Hub submit page (new tab)DHIS2 App Hub details
37866Discourse Meta80Nofollowdiscourse.orgProfiles and entitiesFreeModerateMediumVerified liveUse 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.2026-08-03Open Discourse Meta submit page (new tab)Discourse Meta details
37966Docusaurus Showcase75Link type unknowndocusaurus.ioDesign galleriesFreeModerateMediumLive, conditionalIf 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.2026-08-05Open Docusaurus Showcase submit page (new tab)Docusaurus Showcase details
38066Ecwid App Market80Nofollowecwid.comMarketplaces and app storesFreeModerateMediumVerified liveBuild 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 2026-08-07Open Ecwid App Market submit page (new tab)Ecwid App Market details
38166EdTech Books55Link type unknownedtechbooks.orgPublishing platformsFreeModerateMediumVerified liveCreate 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.pdfOpen EdTech Books submit page (new tab)EdTech Books details
38266Educators Technology—Link type unknowneducatorstechnology.comPublishing platformsFreeModerateMediumNeeds checkingPitch the free tools for their teacher tool roundups.Contact the editor; roundups are frequent.Added 2026-11-01Open Educators Technology submit page (new tab)Educators Technology details
38366ELIXIR TeSS45Link type unknowntess.elixir-europe.orgOther opportunitiesFreeModerateMediumVerified liveRegister 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/registeringOpen ELIXIR TeSS submit page (new tab)ELIXIR TeSS details
38466Espanso Hub50Link type unknownespanso.orgDeveloper registriesFreeModerateMediumVerified liveCreate 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.2026-08-05Open Espanso Hub submit page (new tab)Espanso Hub details
38566EVERSE Research Software Quality Kit—Link type unknowneverse.softwareSoftware directoriesFreeModerateMediumVerified liveDiscuss 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 2026-08-05Open EVERSE Research Software Quality Kit submit page (new tab)EVERSE Research Software Quality Kit details
38666FAIRsharing60Link type unknownfairsharing.orgOther opportunitiesFreeModerateMediumVerified liveSubmit 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
38766Fedora COPR70Link type unknowncopr.fedorainfracloud.orgDeveloper registriesFreeModerateMediumVerified liveCreate 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 2026-07-30Open Fedora COPR submit page (new tab)Fedora COPR details
38866FileHippo85Nofollowfilehippo.comSoftware directoriesFreeModerateMediumNeeds checkingContact them to have your Windows or Mac software added to the catalogue.Editorial choice; files are scanned before listing.Added 2026-11-01Open FileHippo submit page (new tab)FileHippo details
38966FileHorse70Link type unknownfilehorse.comSoftware directoriesFreeModerateMediumNeeds checkingSend your Windows or Mac software for review via their submission or contact page.Editors only list software they consider useful and clean.Added 2026-11-01Open FileHorse submit page (new tab)FileHorse details
39066Firefox Add-ons95Nofollowaddons.mozilla.orgMarketplaces and app storesFreeModerateMediumNot submittedPublish privacy/helper extension.Requires real extension and Mozilla review.2026-07-30Open Firefox Add-ons submit page (new tab)Firefox Add-ons details
39166Flathub75Nofollowflathub.orgMarketplaces and app storesFreeModerateMediumLive, conditionalSubmit 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 2026-07-30Open Flathub submit page (new tab)Flathub details
39266Free Technology for Teachers—Link type unknownfreetech4teachers.comPublishing platformsFreeModerateMediumNeeds checkingPitch one classroom-useful tool (e.g., PDF merge) with a short use case.Popular teacher blog; selective.Added 2026-11-01Open Free Technology for Teachers submit page (new tab)Free Technology for Teachers details
39366free-for-dev—Link type unknowngithub.com/ripienaar/free-for-devDeveloper registriesFreeModerateMediumNeeds checkingOnly 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 2026-11-01Open free-for-dev submit page (new tab)free-for-dev details
39466FreeCAD Addons70Link type unknownfreecad.orgMarketplaces and app storesFreeModerateMediumVerified liveBuild 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-macrosOpen FreeCAD Addons submit page (new tab)FreeCAD Addons details
39566FSF Free Software Directory85Link type unknownfsf.orgSoftware directoriesFreeModerateMediumNot submittedRelease 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.2026-08-03Open FSF Free Software Directory submit page (new tab)FSF Free Software Directory details
39666gHacks—Link type unknownghacks.netPublishing platformsFreeModerateMediumNeeds checkingSend a tip about the browser extension or a useful web tool.Software-focused blog; tips via contact page.Added 2026-11-01Open gHacks submit page (new tab)gHacks details
39766Glide Template Store70Nofollowglideapps.comMarketplaces and app storesFreeModerateMediumVerified livePublish 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 2026-08-07Open Glide Template Store submit page (new tab)Glide Template Store details
39866GNOME Shell Extensions75Link type unknownextensions.gnome.orgMarketplaces and app storesFreeModerateMediumVerified liveCreate 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 2026-07-30Open GNOME Shell Extensions submit page (new tab)GNOME Shell Extensions details
39966GovStack45Link type unknowngovstack.globalOther opportunitiesFreeModerateMediumVerified liveJoin 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/contributingOpen GovStack submit page (new tab)GovStack details
40066Gradle Plugin Portal80Link type unknowngradle.orgMarketplaces and app storesFreeModerateMediumVerified liveShip 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 2026-08-07Open 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.

  1. 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.

  2. 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.

  3. 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.

  4. 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 view

An 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

Common questions

Do backlinks still matter for ranking in 2026?
Links remain one signal among many, and low-quality bulk links do more harm than good. What still works is being listed where your buyers actually look — directories with real traffic, registries your peers use, and launch platforms with engaged audiences. Every entry in this list is a place a human might plausibly find you, which is why they are worth submitting to regardless of link equity.
Which submissions should I do first?
Start with the quick wins filter: free, low effort, and not in the lowest priority band. 208 of the 1,964 entries qualify, and those are the ones where a single form submission gets you a live listing the same week. Launch platforms are worth saving until your product is genuinely ready, because you only get one good attempt at each.
How is the impact score calculated?
It starts from a hand-assigned priority band (do first, high, medium, later), then adjusts for cost and effort. A free, quick opportunity scores above a paid, involved one in the same band, because it is the one you can realistically finish today. The score is a queueing aid, not a measure of domain authority.
Are these links free?
1,628 of the 1,964 entries are free to submit to or offer a free tier that includes a listing. Cost is shown on every row, and the "nothing to pay" filter narrows the list to exactly those.
Which backlink sites are dofollow?
44 entries are known to give a followed link on a normal listing, and more give one only in some placements. The link type is shown on every row and can be filtered. Sites change their link policy without notice, so treat the label as a starting point and check the live page after you are listed. A nofollow link from a busy site still sends visitors and helps search engines discover you.
What does the DA number mean?
It is our estimate of the site's domain authority, a third-party style 0-100 score of how strong a domain's link profile is, rounded to the nearest 5. 1,580 of the 1,964 sites have one. It is useful for comparing sites, not a Google metric, so relevance to your niche still matters more.
How do I get backlinks for a new website?
1. 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. 2. 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. 3. 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. 4. 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.
Will submitting everywhere hurt my site?
Submitting to spam directories can. That is why this list is curated rather than scraped, and why entries carry a status showing whether they have been verified as live. Skip anything that promises hundreds of links for a fee, and prefer places where a real person reviews submissions.