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A maintained list of 1,854 legitimate backlink sites: directories, profile creation sites, guest posting sites, launch platforms, registries and marketplaces. 1,532 are free or have a free tier, 44 usually give a dofollow link, and 772 have an estimated DA of 70 or more. Every row shows authority, link type, cost and effort, and links straight to the submit page.
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 100 | AlternativeTo | 80 | Nofollow | alternativeto.net | Startup directories | Free | Quick | Do first | Not submitted | Create account, wait cooldown if new, submit your tool as platform alternative. | Avoid per-tool submissions for calculators/converters; no URLs in description. | 2026-07-30 | Open AlternativeTo submit page (new tab)AlternativeTo details |
| 2 | 100 | CB Insights | 90 | Nofollow | cbinsights.com | Profiles and entities | Free | Quick | Do first | Not submitted | Request an Analyst Briefing and complete the company survey with product, customer, growth, funding, and market evidence. | Submission does not guarantee profile or research inclusion; all metrics and claims must be supportable and current. | 2026-08-03 | Open CB Insights submit page (new tab)CB Insights details |
| 3 | 100 | Content Authenticity Initiative | 60 | Link type unknown | contentauthenticity.org | Publishing platforms | Free | Quick | Do first | Verified live | Apply as a company and accurately describe your tool C2PA or content-provenance tools and intended participation. | Open membership, but genuine participation is expected; directory may publish the organization name/logo and link. | 2026-08-04 | Open Content Authenticity Initiative submit page (new tab)Content Authenticity Initiative details |
| 4 | 100 | CSA STAR Registry | 80 | Sometimes dofollow | cloudsecurityalliance.org | Developer registries | Free | Quick | Do first | Live, conditional | Complete the current CAIQ or AI-CAIQ truthfully and submit your tool real cloud service to the STAR Registry. | Cloud/SaaS fit only; disclose actual controls and update annually. Never overstate security practices. | 2026-08-04 | Open CSA STAR Registry submit page (new tab)CSA STAR Registry details |
| 5 | 100 | CycloneDX Tool Center | 55 | Link type unknown | cyclonedx.org | Software directories | Free | Quick | Do first | Verified live | Add standards-valid CycloneDX support, then submit the structured your tool entry through the official contribution workflow. | Must accurately state supported CycloneDX versions, functions and licensing; a listing is not product certification. | 2026-08-05 official CycloneDX Tool Center | Open CycloneDX Tool Center submit page (new tab)CycloneDX Tool Center details |
| 6 | 100 | Glama MCP Directory | 50 | Link type unknown | glama.ai | Other opportunities | Free | Quick | Do first | Not submitted | Deploy a maintained your tool MCP server from GitHub, Docker, npm, or PyPI, verify maintainer ownership, and switch it public only after production testing. | Hosted servers are private by default; public listing requires a real working server, and ranking or backlink attributes remain platform-controlled. | 2026-08-03 | Open Glama MCP Directory submit page (new tab)Glama MCP Directory details |
| 7 | 100 | MERLOT | 70 | Link type unknown | merlot.org | Other opportunities | Free | Quick | Do first | Verified live | Publish a genuinely reusable privacy or accessibility lesson on your tool, give it a stable URL and open license, then add its educational metadata to MERLOT. | The resource must be an online OER with its own URL; subscription-only material is inappropriate. Supply discipline, audience, material type, description, author, license, cost, and accessibility metadata honestly. | 2026-08-03 | Open MERLOT submit page (new tab)MERLOT details |
| 8 | 100 | OpenSSF Best Practices Badge | 60 | Link type unknown | bestpractices.dev | Profiles and entities | Free | Quick | Do first | Live, conditional | Open-source a well-scoped your tool component, document its governance, tests, security process, and complete the passing-badge self-assessment. | Only genuine FLOSS projects qualify; claims are checked and must be backed by public evidence, including a public repository, license, contribution path, HTTPS, tests, and vulnerability-reporting process. | 2026-08-03 | Open OpenSSF Best Practices Badge submit page (new tab)OpenSSF Best Practices Badge details |
| 9 | 100 | Postman | 90 | Nofollow | postman.com | Profiles and entities | Free | Quick | Do first | Live, conditional | Create an your tool public workspace with sanitized API collections, examples, documentation, and a canonical homepage link on the publisher profile. | Never publish tokens, cookies, secrets, private endpoints, or user data; run the secret scan before making a workspace public. | https://learning.postman.com/v11/docs/collaborating-in-postman/using-workspaces/public-workspaces | Open Postman submit page (new tab)Postman details |
| 10 | 100 | Product Hunt | 90 | Nofollow | producthunt.com | Launch platforms | Free | Quick | Do first | Not submitted | Launch your platform first; prepare maker comment and assets. | No upvote asks; personal accounts; schedule proper launch. | 2026-07-30 | Open Product Hunt submit page (new tab)Product Hunt details |
| 11 | 100 | RapidAPI Hub | 80 | Link type unknown | rapidapi.com | Marketplaces and app stores | Free | Quick | Do first | Verified live | List a stable your tool API with OpenAPI definitions, clear endpoints, health checks and its official website in the permitted listing field. | The API must be functional, accurately documented and securely operated; avoid listing browser-only tools as fake APIs. | 2026-08-03 | Open RapidAPI Hub submit page (new tab)RapidAPI Hub details |
| 12 | 100 | SaaSHub | 70 | Dofollow | saashub.com | Startup directories | Free | Quick | Do first | Not submitted | Submit platform, add competitor alternatives, verify domain email. | Add competitors; avoid paid multi-submit page confusion. | 2026-07-30 | Open SaaSHub submit page (new tab)SaaSHub details |
| 13 | 100 | Smithery MCP Registry | 50 | Link type unknown | smithery.ai | Developer registries | Free | Quick | Do first | Not submitted | Publish a genuine hosted, external, or stdio MCP server exposing a small set of consent-based your tool utilities with complete metadata and documentation. | Server must be operational and compliant; public page and analytics do not guarantee prominence, referral traffic, or dofollow links. | 2026-08-03 | Open Smithery MCP Registry submit page (new tab)Smithery MCP Registry details |
| 14 | 100 | Tracxn | 75 | Nofollow | tracxn.com | Startup directories | Free | Quick | Do first | Not submitted | Submit the company website and concise product, market, founder, funding, and traction details for analyst review. | Analysts decide inclusion and may request documents; provide only verifiable company, funding, team, and traction data. | 2026-08-03 | Open Tracxn submit page (new tab)Tracxn details |
| 15 | 86 | Activepieces Community Pieces | 50 | Link type unknown | activepieces.com | Communities and forums | Free | Quick | High | Not submitted | Build and test a useful your tool piece with real actions, publish the package under a unique organization scope, and maintain version compatibility. | Users install community pieces through My Pieces; package publication alone does not guarantee central-directory promotion or a followed backlink. | 2026-08-03 | Open Activepieces Community Pieces submit page (new tab)Activepieces Community Pieces details |
| 16 | 86 | Alfred Gallery | 50 | Link type unknown | alfred.app | Design galleries | Free | Quick | High | Verified live | Build a privacy-safe macOS Alfred workflow that opens or runs useful your tool actions, publish it on the forum, gather feedback, and seek Gallery inclusion. | Gallery submission is invitation-based after community testing; no auto-updater, downloaded executables, unsigned binaries, or unsafe behavior. | Official Alfred Gallery submission requirements checked 2026-08-07 | Open Alfred Gallery submit page (new tab)Alfred Gallery details |
| 17 | 86 | AnkiWeb Add-ons | 65 | Link type unknown | ankiweb.net | Marketplaces and app stores | Free | Quick | High | Verified live | Build a useful Anki privacy, study-safety, or accessibility add-on, package it as .ankiaddon, and upload it through AnkiWeb. | Must be a working desktop add-on; avoid collecting card data, document permissions, and maintain compatibility across Anki releases. | Official Anki add-on sharing guide checked 2026-08-05 | Open AnkiWeb Add-ons submit page (new tab)AnkiWeb Add-ons details |
| 18 | 86 | Ansible Galaxy | 80 | Nofollow | ansible.com | Developer registries | Free | Quick | High | Not submitted | Create a tested Ansible collection for supported your tool deployment or audit automation, complete galaxy.yml, version it, and publish with a Galaxy token. | Publish only maintained, useful collection content with accurate metadata and versioning; acceptance does not guarantee discovery, referrals, or followed links. | 2026-08-03 | Open Ansible Galaxy submit page (new tab)Ansible Galaxy details |
| 19 | 86 | Apache Airflow Ecosystem | 90 | Nofollow | airflow.apache.org | Other opportunities | Free | Quick | High | Verified live | Create a real your tool Airflow provider with hooks/operators and documentation metadata, publish it, then add it to Airflow’s Ecosystem page by PR. | Provider must implement apache_airflow_provider metadata, use unique connection types, be documented and packaged; ecosystem PR is evaluated for community usefulness. | 2026-08-05 — https://airflow.apache.org/docs/apache-airflow-providers/howto/create-custom-providers.html | Open Apache Airflow Ecosystem submit page (new tab)Apache Airflow Ecosystem details |
| 20 | 86 | APIs.guru OpenAPI Directory | 50 | Link type unknown | apis.guru | Other opportunities | Free | Quick | High | Live, conditional | When your tool exposes a stable public API, host an official OpenAPI definition at a permanent URL and submit it with accurate ownership, category, logo, and metadata. | The API must be public through clearly documented access steps, persistent, independently useful, and described by a valid machine-readable definition. APIs.guru aggregates rather than hosts the specification and automatically rechecks its source, so keep the canonical spec stable and current. | 2026-08-03 | Open APIs.guru OpenAPI Directory submit page (new tab)APIs.guru OpenAPI Directory details |
| 21 | 86 | Buildkite Plugins Directory | 70 | Link type unknown | buildkite.com | Marketplaces and app stores | Free | Quick | High | Verified live | Build a pipeline plugin that runs your tool checks on selected artifacts and posts configurable pass, warn, or fail annotations. | Use a public repository with the required suffix, valid plugin.yml, hooks, tests, and README; add the official topic for directory sync. | Official Buildkite plugin writing documentation checked 2026-08-07 | Open Buildkite Plugins Directory submit page (new tab)Buildkite Plugins Directory details |
| 22 | 86 | Capterra | 90 | Nofollow | capterra.com | Software directories | Free | Quick | High | Not submitted | List product under software categories. | Part of Gartner Digital Markets; good B2B fit. | 2026-07-30 | Open Capterra submit page (new tab)Capterra details |
| 23 | 86 | CodeNewbie Community | 60 | Nofollow | codenewbie.org | Publishing platforms | Free | Quick | High | Not submitted | Create a transparent human profile and publish a beginner-friendly build log or tutorial showing how one your tool privacy utility works and what tradeoffs it has. | Follow the community code of conduct, accessibility guidance, Markdown/editor rules, and honest authorship. Use canonical URLs where republishing and avoid promotional flooding. | 2026-08-03 | Open CodeNewbie Community submit page (new tab)CodeNewbie Community details |
| 24 | 86 | CodePen | 90 | Nofollow | codepen.io | Profiles and entities | Free | Quick | High | Verified live | Build an original interactive demo of an your tool utility, document the use case in Pen Details, and add your tool as one of the public profile links. | Public Pens are searchable and MIT-licensed; publish original useful code, not a blank redirect or copied landing page. | https://blog.codepen.io/docs/getting-around/your-profile/ | Open CodePen submit page (new tab)CodePen details |
| 25 | 86 | CodeSandbox | 90 | Nofollow | codesandbox.io | Profiles and entities | Free | Quick | High | Not submitted | Publish a small open demo that explains one your tool algorithm or UI pattern and add the product website to the founder profile links. | The sandbox must run and provide reusable technical value; public projects and profile links are UGC and may be nofollowed. | 2026-08-03 | Open CodeSandbox submit page (new tab)CodeSandbox details |
| 26 | 86 | CoFoundersLab | 65 | Nofollow | cofounderslab.com | Startup directories | Free | Quick | High | Verified live | Create a complete founder and startup profile for your tool and participate in relevant founder discussions or connection requests. | Use a real founder identity, contribute context before mentioning AltFTool, and never send unsolicited promotional messages. | Official CoFoundersLab signup and community path checked 2026-08-07 | Open CoFoundersLab submit page (new tab)CoFoundersLab details |
| 27 | 86 | daily.dev | 75 | Nofollow | daily.dev | Profiles and entities | Free | Quick | High | Not submitted | Complete the founder's developer profile, add your tool as real project experience, and publish useful privacy or security engineering posts with contextual links. | Participate as a genuine community member; avoid promotional link dumps, and do not assume any particular search-link attribute. | 2026-08-03 | Open daily.dev submit page (new tab)daily.dev details |
| 28 | 86 | DatoCMS Plugin Marketplace | 65 | Link type unknown | datocms.com | Marketplaces and app stores | Free | Quick | High | Verified live | Build an your tool privacy or security field plugin, publish the npm package, and use your tool as its homepage and support site. | The package name must start datocms-plugin-, include the required keyword, and meet Plugin SDK requirements; ingestion is automatic. | Official DatoCMS Marketplace publishing documentation checked 2026-08-07 | Open DatoCMS Plugin Marketplace submit page (new tab)DatoCMS Plugin Marketplace details |
| 29 | 86 | Directus Marketplace | 65 | Link type unknown | directus.com | Marketplaces and app stores | Free | Quick | High | Verified live | Publish a genuine your tool Directus extension to npm and complete author, documentation, support, and website metadata. | Requires the Directus extension keyword and metadata; availability depends on supported extension type and matching npm and GitHub author identity. | Official Directus Marketplace publishing documentation checked 2026-08-07 | Open Directus Marketplace submit page (new tab)Directus Marketplace details |
| 30 | 86 | DokuWiki Plugins | 70 | Nofollow | dokuwiki.org | Marketplaces and app stores | Free | Quick | High | Verified live | Build a DokuWiki privacy, redaction, accessibility, or secure-export plugin, publish its code and create the canonical plugin page used by the extension directory. | Must be an installable maintained plugin with accurate compatibility, download, source, license, and security information. | Official DokuWiki extension pages and plugin wizard checked 2026-08-05 | Open DokuWiki Plugins submit page (new tab)DokuWiki Plugins details |
| 31 | 86 | Eclipse Marketplace | 90 | Nofollow | eclipse.org | Marketplaces and app stores | Free | Quick | High | Verified live | Publish a functional Eclipse plugin for an your tool developer use case, then create a complete marketplace listing with official support and source links. | Requires an Eclipse account, a working installable plugin and compliance with marketplace content and trademark rules. | 2026-08-03 | Open Eclipse Marketplace submit page (new tab)Eclipse Marketplace details |
| 32 | 86 | Fourthwall | 70 | Nofollow | fourthwall.com | Other opportunities | Free | Quick | High | Verified live | Offer a substantial free privacy checklist, accessibility workbook, or safety template from a branded storefront and link your tool only as supporting documentation. | Publish useful rights-cleared products rather than thin promotional downloads; payment rates vary and the free plan has listing limits. | Official Fourthwall digital-products, pricing, and terms pages checked 2026-08-07 | Open Fourthwall submit page (new tab)Fourthwall details |
| 33 | 86 | Framer Marketplace | 85 | Nofollow | framer.com | Marketplaces and app stores | Free | Quick | High | Verified live | Create a functional Framer plugin for accessibility, metadata, responsive-content, or privacy checks and publish it with your tool documentation. | Test in fresh projects, package the real plugin, provide accurate screenshots and descriptions, and maintain every published version. | Official Framer plugin publishing documentation checked 2026-08-07 | Open Framer Marketplace submit page (new tab)Framer Marketplace details |
| 34 | 86 | Frappe Cloud Marketplace | 65 | Link type unknown | frappe.io | Marketplaces and app stores | Free | Quick | High | Verified live | Build a useful your tool-related Frappe app, publish it through Frappe Cloud Marketplace, and include the official project/site link in its genuine listing. | App must be open source under an MIT/GPL-compatible licence, stable on Frappe, pass CI, provide support/privacy URLs and accurate imagery/demo; do not use the listing as a link-only redirect. | 2026-08-05 | Open Frappe Cloud Marketplace submit page (new tab)Frappe Cloud Marketplace details |
| 35 | 86 | Frontend Mentor | 65 | Nofollow | frontendmentor.io | Design galleries | Free | Quick | High | Verified live | Complete a relevant accessibility or privacy-themed challenge, submit its real live URL and public repository, and add your tool only as maker context or a case-study link. | The submission must solve an actual challenge; a live URL and public repository are required, so never upload secrets or private code. | Official Frontend Mentor submission and plan guidance checked 2026-08-07 | Open Frontend Mentor submit page (new tab)Frontend Mentor details |
| 36 | 86 | GeM | 70 | Link type unknown | gem.gov.in | Marketplaces and app stores | Free | Quick | High | Live, conditional | Register an authorized Indian business seller and list only real eligible your tool services with accurate catalogue details. | Requires authorized entity, Aadhaar/PAN, business PAN, incorporation and bank data; an external backlink is not guaranteed. | 2026-08-04 | Open GeM submit page (new tab)GeM details |
| 37 | 86 | gitconnected | 50 | Nofollow | gitconnected.com | Profiles and entities | Free | Quick | High | Not submitted | Create the founder developer profile, add your tool as a real project, and link the live product and supporting repository where applicable. | Use a real individual profile with accurate work history; this is not a generic company-directory listing. | 2026-08-03 | Open gitconnected submit page (new tab)gitconnected details |
| 38 | 86 | GitHub | 95 | Nofollow | github.com | Developer registries | Free | Quick | High | Not submitted | Create org/repo README linking your tool; submit to relevant awesome lists. | Only publish original/clean licensed code; no fake stars. | 2026-07-30 | Open GitHub submit page (new tab)GitHub details |
| 39 | 86 | Glasp | 55 | Nofollow | glasp.co | Profiles and entities | Free | Quick | High | Verified live | Create a founder research profile that curates authoritative privacy, accessibility, security, and standards material, including your tool only when it directly supports the annotation. | Free-user highlights are public by default; never add confidential data or secrets, and maintain balanced curation instead of a self-link collection. | Official Glasp pricing and highlighting guidance checked 2026-08-07 | Open Glasp submit page (new tab)Glasp details |
| 40 | 86 | Goodpods | 60 | Nofollow | goodpods.com | Other opportunities | Free | Quick | High | Live, conditional | Search for and claim a real your tool podcast, then keep its RSS-supplied website and episode metadata accurate. | Claim only a show AltFTool owns; authentic podcast content and RSS ownership are required. | 2026-08-04 | Open Goodpods submit page (new tab)Goodpods details |
| 41 | 86 | Hexo Plugin List | 75 | Link type unknown | hexo.io | Marketplaces and app stores | Free | Quick | High | Verified live | Create a functional Hexo plugin for a relevant your tool capability, publish the package, then add its record to Hexo's official plugin data repository. | Plugin must be genuinely useful, maintained and correctly packaged; submit the required YAML metadata through the documented contribution path, not a promotional-only entry. | 2026-08-05 | Open Hexo Plugin List submit page (new tab)Hexo Plugin List details |
| 42 | 86 | HSTS Preload List | 70 | Link type unknown | hstspreload.org | Other opportunities | Free | Quick | High | Not submitted | Audit every your tool subdomain, stage HSTS safely, then submit the base domain only after long-term HTTPS readiness is proven. | Requires a valid certificate, HTTP-to-HTTPS redirect, HTTPS on every subdomain, and HSTS max-age of at least one year with includeSubDomains and preload. Inclusion is difficult and slow to undo, so do not submit before a staged rollout. | 2026-08-03 | Open HSTS Preload List submit page (new tab)HSTS Preload List details |
| 43 | 86 | Indie Hackers | 75 | Nofollow | indiehackers.com | Startup directories | Free | Quick | High | Not submitted | Add product and post build-in-public story with honest numbers. | Avoid link-drop; founder story performs better. | 2026-07-30 | Open Indie Hackers submit page (new tab)Indie Hackers details |
| 44 | 86 | Joplin Plugins | 60 | Link type unknown | joplinapp.org | Marketplaces and app stores | Free | Quick | High | Not submitted | Build and test a Joplin plugin that locally detects or removes sensitive note content, provide a valid manifest and publish a maintained release for discovery. | Requires a real installable package, correct plugin manifest and ongoing compatibility; directory metadata and outbound-link handling are platform-controlled. | 2026-08-03 | Open Joplin Plugins submit page (new tab)Joplin Plugins details |
| 45 | 86 | Keybase | 75 | Nofollow | keybase.io | Startup directories | Free | Quick | High | Not submitted | Create the founder Keybase profile and cryptographically prove control of your tool so the public identity record links the verified domain. | The founder must control the website or DNS proof and keep account keys secure; this verifies identity rather than acting as a marketing listing. | 2026-08-03 | Open Keybase submit page (new tab)Keybase details |
| 46 | 86 | Kompass | 75 | Sometimes dofollow | kompass.com | Business directories | Free | Quick | High | Not submitted | Register the legal company and complete a global B2B profile with accurate IT services, contact data, and your tool website. | Provide verifiable company details and choose the correct Kompass classifications; enhanced promotion is paid. | 2026-08-03 | Open Kompass submit page (new tab)Kompass details |
| 47 | 86 | Listen Notes | 80 | Dofollow | listennotes.com | Other opportunities | Free | Quick | High | Live, conditional | Submit a real your tool podcast RSS feed whose show website and episode notes naturally reference relevant tools. | Valid human-made podcast with substantive episodes only; low-quality or link-only feeds are rejected. | 2026-08-04 | Open Listen Notes submit page (new tab)Listen Notes details |
| 48 | 86 | MeltanoHub | 50 | Link type unknown | hub.meltano.com | Marketplaces and app stores | Free | Quick | High | Verified live | Build a Singer SDK tap that incrementally extracts your tool audit runs and findings, then add it through MeltanoHub's official issue-assisted or self-service contribution path. | Must be an installable, maintained Singer tap with real schemas and incremental state behavior; do not submit a metadata-only package. | 2026-08-05 | Open MeltanoHub submit page (new tab)MeltanoHub details |
| 49 | 86 | Node-RED Flow Library | 65 | Link type unknown | nodered.org | Developer registries | Free | Quick | High | Verified live | Create a functional your tool Node-RED node, publish it to npm, and add it to the Flow Library with documentation and support metadata. | Must follow Node-RED naming, package metadata, node UX, testing, and documentation conventions and avoid thin wrappers. | Official Node-RED custom node documentation checked 2026-08-07 | Open Node-RED Flow Library submit page (new tab)Node-RED Flow Library details |
| 50 | 86 | NuGet | 85 | Nofollow | nuget.org | Developer registries | Free | Quick | High | Verified live | Publish a real .NET library or CLI package with ProjectUrl, readme, repository and license metadata. | Requires a Microsoft account and API key; packages undergo validation and indexing. | Official Microsoft NuGet docs checked 2026-07-30 | Open NuGet submit page (new tab)NuGet details |
| 51 | 86 | NVDA Add-on Store | 60 | Link type unknown | addonstore.nvaccess.org | Marketplaces and app stores | Free | Quick | High | Verified live | Build an installable privacy or accessibility NVDA add-on and submit it through the official add-on datastore workflow. | Not a generic website listing; public source, documentation, compatible licensing, testing, and ongoing NVDA compatibility are required. | Official live store and datastore submission guide checked 2026-08-05 | Open NVDA Add-on Store submit page (new tab)NVDA Add-on Store details |
| 52 | 86 | Obsidian Community Plugins | 75 | Link type unknown | obsidian.md | Marketplaces and app stores | Free | Quick | High | Verified live | Build a unique and useful Obsidian plugin, create valid releases and submit it to the community plugin directory. | Requires a working plugin, release artifacts, documentation and compliance with Obsidian developer policies. | Official Obsidian submission docs checked 2026-07-30 | Open Obsidian Community Plugins submit page (new tab)Obsidian Community Plugins details |
| 53 | 86 | Open Hub | 75 | Nofollow | openhub.net | Profiles and entities | Free | Quick | High | Verified live | Add or claim a genuine open-source your tool project and complete its description, code locations, tags and official homepage. | FOSS projects only; connect real public source history and avoid duplicate or abandoned shell projects. | Official live Open Hub project directory checked 2026-07-30 | Open Open Hub submit page (new tab)Open Hub details |
| 54 | 86 | Open VSX Registry | 65 | Link type unknown | open-vsx.org | Marketplaces and app stores | Free | Quick | High | Live, conditional | Publish a useful your tool editor extension whose marketplace metadata links to its homepage and documentation. | Requires a genuine VSIX extension, namespace ownership and an access token; do not republish third-party work without rights. | https://open-vsx.org/ | Open Open VSX Registry submit page (new tab)Open VSX Registry details |
| 55 | 86 | OpenChain | 50 | Link type unknown | openchainproject.org | Other opportunities | Free | Quick | High | Verified live | Implement a scoped open-source compliance or security-assurance program, self-certify honestly, then request your tool Community of Conformance listing. | Every applicable answer must truthfully be yes and scope must be explicit; self-certification is not independent certification or endorsement. | 2026-08-05 official conformance submission, FAQ and Community of Conformance pages | Open OpenChain submit page (new tab)OpenChain details |
| 56 | 86 | OpenTelemetry Registry | 75 | Link type unknown | opentelemetry.io | Marketplaces and app stores | Free | Quick | High | Verified live | Add native OpenTelemetry support or build a useful your tool instrumentation or utility, then submit its registry metadata and documentation links. | Must fit an allowed registry type, have real implementation and enablement docs, use accurate licence and marketing metadata, and stay maintained. | 2026-08-05 — https://opentelemetry.io/ecosystem/registry/adding/ | Open OpenTelemetry Registry submit page (new tab)OpenTelemetry Registry details |
| 57 | 86 | Package Control | 60 | Link type unknown | packagecontrol.io | Marketplaces and app stores | Free | Quick | High | Verified live | Build a useful Sublime Text integration for an your tool developer workflow, document it publicly and submit the package for review. | Requires a public repository, valid metadata, releases and successful automated tests; thin promotional plugins will not qualify. | 2026-08-03 | Open Package Control submit page (new tab)Package Control details |
| 58 | 86 | Peerlist | 55 | Link type unknown | peerlist.io | Launch platforms | Free | Quick | High | Not submitted | Create maker profile and launch your tool as project. | Best fit for developer/design tools; complete profile first. | 2026-07-30 | Open Peerlist submit page (new tab)Peerlist details |
| 59 | 86 | Pipedream Registry | 70 | Link type unknown | pipedream.com | Marketplaces and app stores | Free | Quick | High | Live, conditional | Build your tool triggers/actions, submit them to the public registry by GitHub PR, and address review feedback. | Components must follow registry patterns; approved PRs become available in Pipedream Marketplace and workflows. | https://pipedream.com/docs/components/contributing | Open Pipedream Registry submit page (new tab)Pipedream Registry details |
| 60 | 86 | Pipedrive Marketplace | 85 | Link type unknown | pipedrive.com | Marketplaces and app stores | Free | Quick | High | Verified live | Build a Pipedrive OAuth integration for safe note export, duplicate cleanup, or PII auditing and submit a unique your tool listing. | OAuth and testing are mandatory; accept the partner agreement and provide working legal, support, and production URLs. | Official Pipedrive app development and marketplace guidance checked 2026-08-07 | Open Pipedrive Marketplace submit page (new tab)Pipedrive Marketplace details |
| 61 | 86 | PlatformIO Registry | 60 | Link type unknown | registry.platformio.org | Developer registries | Free | Quick | High | Verified live | Package a real embedded privacy or security library for supported boards, add complete PlatformIO manifest and examples, test it, and publish it publicly. | Published name-version pairs are immutable; package must be functional, properly licensed, documented, versioned, and maintained. | Official PlatformIO package-publish documentation checked 2026-08-05 | Open PlatformIO Registry submit page (new tab)PlatformIO Registry details |
| 62 | 86 | Player FM | 80 | Nofollow | player.fm | Other opportunities | Free | Quick | High | Live, conditional | Submit a genuine your tool podcast RSS feed or Apple Podcasts URL with accurate show-website and episode metadata. | Feed must be public, accessible and contain playable audio enclosures; do not submit a fake link-only feed. | 2026-08-04 | Open Player FM submit page (new tab)Player FM details |
| 63 | 86 | Pocket Casts | 70 | Link type unknown | pocketcasts.com | Other opportunities | Free | Quick | High | Live, conditional | Submit a real public your tool podcast RSS feed whose metadata and episode notes reference the official site naturally. | Requires a valid public RSS feed and genuine episodes; do not submit a shell or private feed as public. | 2026-08-05 | Open Pocket Casts submit page (new tab)Pocket Casts details |
| 64 | 86 | PowerShell Gallery | 75 | Nofollow | powershellgallery.com | Developer registries | Free | Quick | High | Verified live | Publish a stable your tool module or script with ProjectURI, LicenseURI, tags, help and examples. | Requires an account and API key; pass PowerShell Gallery validation and avoid placeholder packages. | Official Microsoft publishing docs checked 2026-07-30 | Open PowerShell Gallery submit page (new tab)PowerShell Gallery details |
| 65 | 86 | PRISM Break | 60 | Dofollow | prism-break.org | Software directories | Free | Quick | High | Live, conditional | Propose a qualifying open-source your tool privacy project through the official contribution process. | Strong privacy and free-software fit is required; follow maintainers' criteria and avoid promotional-only changes. | 2026-08-05 | Open PRISM Break submit page (new tab)PRISM Break details |
| 66 | 86 | pub.dev | 85 | Link type unknown | pub.dev | Developer registries | Free | Quick | High | Verified live | Publish an your tool Dart package with homepage, repository, issue tracker, documentation and a complete readme. | Must satisfy pub.dev policy and quality checks; a verified publisher is preferable for a branded package. | Official Dart publishing docs checked 2026-07-30 | Open pub.dev submit page (new tab)pub.dev details |
| 67 | 86 | RingCentral App Gallery | 85 | Link type unknown | ringcentral.com | Marketplaces and app stores | Free | Quick | High | Verified live | Build a public RingCentral integration around call-note privacy or safe file sharing and complete the profile with your tool documentation, privacy, and support links. | A working public app is mandatory; screenshots must show the integration, and the profile needs installation, support, privacy, and legal details. | Official RingCentral App Gallery promotion documentation checked 2026-08-07 | Open RingCentral App Gallery submit page (new tab)RingCentral App Gallery details |
| 68 | 86 | Sensu Bonsai | 50 | Link type unknown | bonsai.sensu.io | Other opportunities | Free | Quick | High | Verified live | Publish an open-source Sensu check/handler for your tool, create GitHub releases and bonsai.yml, then register it with description and tags. | GitHub-hosted open-source asset; release archives, supported platforms, SHA-512 checksums, useful README and correct Bonsai metadata are required. | 2026-08-05 — https://docs.sensu.io/sensu-go/latest/plugins/assets/#share-an-asset-on-bonsai | Open Sensu Bonsai submit page (new tab)Sensu Bonsai details |
| 69 | 86 | Sessionize | 70 | Link type unknown | sessionize.com | Profiles and entities | Free | Quick | High | Live, conditional | Create a founder expert profile and submit substantive talks about privacy-first tools, accessibility or web security. | Directory visibility should reflect real expertise and sessions; free event mode excludes promotional or commercial events. | 2026-08-05 | Open Sessionize submit page (new tab)Sessionize details |
| 70 | 86 | Speaker Deck | 85 | Nofollow | speakerdeck.com | Publishing platforms | Free | Quick | High | Verified live | Upload an original conference-quality PDF deck explaining privacy-safe tooling or accessibility testing, with a useful description, correct category, references, and an honest profile link. | Upload a real educational presentation, not a sales brochure. Free decks are public and downloadable; private or password-protected sharing requires Pro, and all content must be owned or licensed. | 2026-08-03 | Open Speaker Deck submit page (new tab)Speaker Deck details |
| 71 | 86 | Stacker News | 50 | Link type unknown | stacker.news | Profiles and entities | Free | Quick | High | Needs checking | Create a genuine founder profile and share a useful build story or tutorial with a relevant link. | Follow community self-promotion rules; contribute before linking; no repetitive posts. Listing link is currently reported nofollow. | 2026-07-30 • https://www.submission.directory/site/stacker-news | Open Stacker News submit page (new tab)Stacker News details |
| 72 | 86 | Startup Grind | 70 | Link type unknown | startupgrind.com | Startup directories | Free | Quick | High | Verified live | Join a relevant chapter, complete the founder profile, attend suitable events, and share your tool only in genuine networking context. | Choose a relevant chapter or event and follow organizer rules; member access is not a broadcast or mass-messaging channel. | Official Startup Grind chapter community path checked 2026-08-07 | Open Startup Grind submit page (new tab)Startup Grind details |
| 73 | 86 | Tableau Public | 90 | Nofollow | public.tableau.com | Profiles and entities | Free | Quick | High | Verified live | Publish an original dashboard using public your tool benchmark or ecosystem data and add an appropriate project permalink in workbook details. | Everything published is publicly accessible and may be downloadable; never include secrets, private analytics, user-level records, or confidential data. | https://help.tableau.com/current/pro/desktop/en-gb/publish_workbooks_tableaupublic.htm | Open Tableau Public submit page (new tab)Tableau Public details |
| 74 | 86 | Terraform Registry | 80 | Link type unknown | registry.terraform.io | Developer registries | Free | Quick | High | Live, conditional | Publish a maintained Terraform provider for your tool stable API, or a genuinely reusable deployment module, with signed releases, generated documentation, examples, tests, and semantic versions. | A provider must use a public lowercase terraform-provider-* GitHub repository, signed cross-platform release assets, a valid manifest, docs, and SemVer tags. A module has separate public-repository, naming, structure, documentation, and tag requirements. Publish only a functional reusable artifact. | 2026-08-03 | Open Terraform Registry submit page (new tab)Terraform Registry details |
| 75 | 86 | The Org | 65 | Nofollow | theorg.com | Startup directories | Free | Quick | High | Verified live | Add your tool’s real company, founder, and team structure with website and role details to create a trustworthy organization profile. | Use verified work details and obtain team consent before publishing names or roles; do not fabricate an org chart. | https://theorg.com/iterate/how-to-make-an-org-chart | Open The Org submit page (new tab)The Org details |
| 76 | 86 | Traefik Plugin Catalog | 60 | Link type unknown | plugins.traefik.io | Marketplaces and app stores | Free | Quick | High | Verified live | Build a production-quality Traefik middleware plugin for an your tool privacy or security use case and publish it to the public catalog. | Plugin must be public, reusable, tested, documented, safely scoped, and compliant with Traefik plugin manifest and registry requirements. | 2026-08-05 — https://doc.traefik.io/traefik-hub/api-gateway/guides/plugin-development-guide | Open Traefik Plugin Catalog submit page (new tab)Traefik Plugin Catalog details |
| 77 | 86 | TYPO3 Extension Repository | 75 | Link type unknown | typo3.org | Marketplaces and app stores | Free | Quick | High | Verified live | Build a TYPO3 backend extension for selected content or media PII, metadata, and accessibility checks. | Register a unique extension key and provide public source, documentation, security policy, semantic versions, and maintained releases. | Official TYPO3 Extension Repository publishing documentation checked 2026-08-07 | Open TYPO3 Extension Repository submit page (new tab)TYPO3 Extension Repository details |
| 78 | 86 | Umbraco Marketplace | 75 | Link type unknown | umbraco.com | Marketplaces and app stores | Free | Quick | High | Verified live | Create an your tool Umbraco integration package and point its NuGet project URL plus documentation to your tool. | The NuGet package needs the marketplace tag, supported Umbraco version metadata, documentation, and optional marketplace manifest. | Official Umbraco Marketplace package listing documentation checked 2026-08-07 | Open Umbraco Marketplace submit page (new tab)Umbraco Marketplace details |
| 79 | 86 | UN SDG Actions Platform | 90 | Link type unknown | sdgs.un.org | Startup directories | Free | Quick | High | Verified live | Register a concrete ongoing your tool initiative with measurable milestones, dates, resources, SDG targets, partners and website evidence. | Action must be specific, measurable, achievable, resource-based, time-bound and ongoing; not a proposal, completed activity or organization profile. | 2026-08-05 — https://sdgs.un.org/partnerships/acceleration-actions/register | Open UN SDG Actions Platform submit page (new tab)UN SDG Actions Platform details |
| 80 | 86 | Webex App Hub | 90 | Link type unknown | webex.com | Marketplaces and app stores | Free | Quick | High | Verified live | Build a production Webex integration or bot for deliberate sharing of your tool checklists or sanitized files, then submit its branded App Hub profile. | Must be production-ready, use minimum scopes, avoid Cisco trademark misuse, and provide complete support and marketing material. | Official Webex App Hub submission documentation checked 2026-08-07 | Open Webex App Hub submit page (new tab)Webex App Hub details |
| 81 | 86 | Wikimedia Toolhub | 95 | Link type unknown | toolhub.wikimedia.org | Software directories | Free | Quick | High | Verified live | Build a tool that genuinely interacts with Wikimedia, publish accurate toolinfo.json metadata, and register it through Toolhub UI, crawler, or API. | Must serve Wikimedia projects; Wikimedia login is required and submitted metadata is CC0; unrelated utilities do not qualify. | Official Wikimedia developer search and Toolhub documentation checked 2026-08-05 | Open Wikimedia Toolhub submit page (new tab)Wikimedia Toolhub details |
| 82 | 86 | WordPress.org Plugins | 95 | Nofollow | wordpress.org | Marketplaces and app stores | Free | Quick | High | Not submitted | Submit your tool widgets plugin after /embed is live. | Credit link must be opt-in/default hidden; GPL-compatible plugin. | 2026-07-30 | Open WordPress.org Plugins submit page (new tab)WordPress.org Plugins details |
| 83 | 68 | Apify Store | 70 | Nofollow | apify.com | Marketplaces and app stores | Free | Quick | Medium | Live, conditional | Build a working your tool automation Actor, publish it to the Store and include contextual project/documentation links. | Actor must perform a real automation use case, meet Store quality/security rules and avoid unauthorized scraping or data use. | https://docs.apify.com/actors/publishing | Open Apify Store submit page (new tab)Apify Store details |
| 84 | 68 | AppImageHub | 50 | Link type unknown | appimage.github.io | Software directories | Free | Quick | Medium | Live, conditional | Package a legitimate your tool desktop app as an official AppImage, then file the requested issue or pull request for inclusion. | Requires a maintained downloadable AppImage and compliant metadata; a browser-only site is not eligible. | 2026-08-05 | Open AppImageHub submit page (new tab)AppImageHub details |
| 85 | 68 | Astro Showcase | 70 | Link type unknown | astro.build | Design galleries | Free | Quick | Medium | Live, conditional | If an your tool property genuinely uses Astro, use the Submit site action to propose it for the public showcase. | Only submit an actual Astro-built production site; acceptance is curated and not guaranteed. | 2026-08-05 | Open Astro Showcase submit page (new tab)Astro Showcase details |
| 86 | 68 | Best of JS | 55 | Sometimes dofollow | bestofjs.org | Developer registries | Free | Quick | Medium | Needs checking | Suggest your JavaScript or TypeScript project through their GitHub issue process. | Projects need some traction and must be JS ecosystem tools. | Added 2026-11-01 | Open Best of JS submit page (new tab)Best of JS details |
| 87 | 68 | BibSonomy | 65 | Nofollow | bibsonomy.org | Social channels | Free | Quick | Medium | Verified live | Curate a tagged public collection of authoritative privacy, accessibility, and safety resources with your tool included only where substantively relevant. | Build a balanced useful bibliography; avoid repetitive self-bookmarking, keyword stuffing, or treating the service as a backlink directory. | Official BibSonomy service and guidance checked 2026-08-07 | Open BibSonomy submit page (new tab)BibSonomy details |
| 88 | 68 | bio.tools | 55 | Link type unknown | bio.tools | Software directories | Free | Quick | Medium | Verified live | Register a genuinely life-science-focused your tool resource with stable homepage, scientific operations, inputs, outputs, licence, and documentation. | Must perform a credible bioinformatics or life-science function; medical branding alone is insufficient and EDAM metadata is expected. | 2026-08-05 — https://biotools.readthedocs.io/en/latest/quickstart_guide.html | Open bio.tools submit page (new tab)bio.tools details |
| 89 | 68 | Budibase Community Plugins | 60 | Link type unknown | budibase.com | Marketplaces and app stores | Free | Quick | Medium | Verified live | Build a useful your tool Budibase component or data-source plugin, publish the package or repository, and seek inclusion in community plugin resources. | A functional plugin and public package are required; central curation is not guaranteed, so treat the package and documentation as the primary asset. | Official Budibase custom plugin documentation checked 2026-08-07 | Open Budibase Community Plugins submit page (new tab)Budibase Community Plugins details |
| 90 | 68 | CapRover One-Click Apps | 50 | Link type unknown | caprover.com | Software directories | Free | Quick | Medium | Verified live | Create a tested CapRover one-click definition for a real self-hosted your tool service and contribute it to the linked official community repository. | The directory is community-maintained; use safe defaults, document required variables and persistence, and keep images and deployment instructions current. | Official CapRover one-click app documentation and repository checked 2026-08-05 | Open CapRover One-Click Apps submit page (new tab)CapRover One-Click Apps details |
| 91 | 68 | Chef Supermarket | 75 | Link type unknown | chef.io | Developer registries | Free | Quick | Medium | Not submitted | Create a tested Chef cookbook for supported your tool deployment or hardening, add complete metadata and source, then share it to Supermarket. | Only publish functional maintained cookbooks with appropriate licensing and metadata; package pages are not guaranteed promotional or dofollow placements. | 2026-08-03 | Open Chef Supermarket submit page (new tab)Chef Supermarket details |
| 92 | 68 | Clojars | 60 | Link type unknown | clojars.org | Developer registries | Free | Quick | Medium | Verified live | Release a genuine Clojure or JVM client library with a POM, description, homepage and source metadata. | Requires an account and deploy credentials; use a unique group or verified domain and maintain releases. | Official Clojars publishing interface checked 2026-07-30 | Open Clojars submit page (new tab)Clojars details |
| 93 | 68 | Cloudsmith | 60 | Link type unknown | cloudsmith.com | Developer registries | Free | Quick | Medium | Live, conditional | Create a public your tool package repository for genuine releases and complete its namespace, description, licence and source/homepage metadata. | Only host real maintained artifacts; the open-source plan requires public licensed software and public distribution can incur usage limits. | 2026-08-05 official Cloudsmith repository docs and pricing | Open Cloudsmith submit page (new tab)Cloudsmith details |
| 94 | 68 | CocoaPods | 75 | Link type unknown | cocoapods.org | Developer registries | Free | Quick | Medium | Live, conditional | Publish a genuine iOS or macOS your tool SDK and set homepage/source URLs in its podspec. | Requires a valid podspec and Trunk registration; package must be an actual reusable Apple-platform library. | https://guides.cocoapods.org/making/getting-setup-with-trunk.html | Open CocoaPods submit page (new tab)CocoaPods details |
| 95 | 68 | Common Workflow Language | 55 | Link type unknown | commonwl.org | Software directories | Free | Quick | Medium | Verified live | Build a genuine CWL validator, security tool, or implementation and propose its inclusion with compliance evidence. | Must actually support CWL; the community-maintained listing does not constitute formal certification. | Official CWL implementation page and website repository checked 2026-08-05 | Open Common Workflow Language submit page (new tab)Common Workflow Language details |
| 96 | 68 | CPAN / PAUSE | 80 | Link type unknown | cpan.org | Developer registries | Free | Quick | Medium | Verified live | Publish a genuine Perl module or CLI through PAUSE with project URLs and clear distribution documentation. | Requires a PAUSE account, unique namespace and ongoing maintenance; first uploader controls the namespace. | Official CPAN PAUSE docs checked 2026-07-30 | Open CPAN / PAUSE submit page (new tab)CPAN / PAUSE details |
| 97 | 68 | Dark Mode Design | 50 | Sometimes dofollow | darkmodedesign.com | Design galleries | Free | Quick | Medium | Needs checking | Submit your site if it has a polished dark design. | Curated; only well-designed dark sites are featured. | Added 2026-11-01 | Open Dark Mode Design submit page (new tab)Dark Mode Design details |
| 98 | 68 | devChallenges | 50 | Link type unknown | devchallenges.io | Design galleries | Free | Quick | Medium | Verified live | Build a genuine free challenge solution, publish the deployed project and repository, and use the finished privacy or accessibility implementation as a portfolio case study. | Only submit work that answers a listed challenge; do not upload AltFTool as an unrelated product, and remember solutions remain public. | Official devChallenges platform and plan information checked 2026-08-07 | Open devChallenges submit page (new tab)devChallenges details |
| 99 | 68 | Devpost | 85 | Nofollow | devpost.com | Design galleries | Free | Quick | Medium | Verified live | Enter a relevant live hackathon with a working your tool project, complete its story and demo, and include the project website where allowed. | Only submit to genuinely relevant events, follow each hackathon's eligibility and judging rules, and do not recycle an unrelated promotion. | Official Devpost submission help checked 2026-07-30 | Open Devpost submit page (new tab)Devpost details |
| 100 | 68 | Django Packages | 60 | Link type unknown | djangopackages.org | Developer registries | Free | Quick | Medium | Live, conditional | After releasing a genuinely Django-relevant open-source component, sign in and add its GitHub or GitLab repository and accurate project links. | Package must be useful to Django developers and hosted on a supported public repository; listings are community-maintained and not DSF endorsement. | 2026-08-05 official Django Packages FAQ, documentation and live directory | Open Django Packages submit page (new tab)Django Packages details |
Four steps that work for a new site, a SaaS or a side project. No paid link packages, nothing that risks a penalty.
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.
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.
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.
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
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.
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.