Free backlink sites list: 1,964 places to get a link
A maintained list of 1,964 legitimate backlink sites: directories, profile creation sites, guest posting sites, launch platforms, registries and marketplaces. 1,628 are free or have a free tier, 44 usually give a dofollow link, and 781 have an estimated DA of 70 or more. Every row shows authority, link type, cost and effort, and links straight to the submit page.
- 1,964
- Opportunities
- 1,628
- Free or freemium
- 781
- Est. DA 70+
- 208
- Quick wins
All filters3
Highest impactimpact 100–98
- SubmitACT Rules Community (opens in a new tab)
ACT Rules Community
act-rules.github.ioImplement applicable ACT Rules, execute official test cases, publish the implementation report, join ACT-R CG, and propose your tool as an implementation.
Estimated domain authority DA ~45DofollowFreeQuickVerified liveAccessibility - SubmitAlternativeTo (opens in a new tab)
AlternativeTo
alternativeto.netCreate account, wait cooldown if new, submit your tool as platform alternative.
Estimated domain authority DA ~80NofollowFreeQuickNot submittedStartup directory - SubmitCB Insights (opens in a new tab)
CB Insights
cbinsights.comRequest an Analyst Briefing and complete the company survey with product, customer, growth, funding, and market evidence.
Estimated domain authority DA ~90NofollowFreeQuickNot submittedTechnology market-intelligence database - SubmitContent Authenticity Initiative (opens in a new tab)
Content Authenticity Initiative
contentauthenticity.orgApply as a company and accurately describe your tool C2PA or content-provenance tools and intended participation.
Estimated domain authority DA ~60FreeQuickVerified liveContent Authenticity - SubmitCSA STAR Registry (opens in a new tab)
CSA STAR Registry
cloudsecurityalliance.orgComplete the current CAIQ or AI-CAIQ truthfully and submit your tool real cloud service to the STAR Registry.
Estimated domain authority DA ~80Sometimes dofollowFreeQuickLive, conditionalCloud Security - SubmitCycloneDX Tool Center (opens in a new tab)
CycloneDX Tool Center
cyclonedx.orgAdd standards-valid CycloneDX support, then submit your structured entry through the official contribution workflow.
Estimated domain authority DA ~55FreeQuickVerified liveSBOM Ecosystem - SubmitFreeNoSignup (opens in a new tab)
FreeNoSignup
freenosignup.comSubmit one or more free your tool utilities that work without registration.
FreeQuickVerified liveNo-Signup Tool Directory - SubmitGlama MCP Directory (opens in a new tab)
Glama MCP Directory
glama.aiDeploy your maintained MCP server from GitHub, Docker, npm, or PyPI, verify maintainer ownership, and switch it public only after production testing.
Estimated domain authority DA ~50FreeQuickNot submittedMCP Ecosystem - SubmitMERLOT (opens in a new tab)
MERLOT
merlot.orgPublish 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.
Estimated domain authority DA ~70FreeQuickVerified liveOpen Education - SubmitOpenSSF Best Practices Badge (opens in a new tab)
OpenSSF Best Practices Badge
bestpractices.devOpen-source your well-scoped component, document its governance, tests, security process, and complete the passing-badge self-assessment.
Estimated domain authority DA ~60FreeQuickLive, conditionalOpen-Source Security - SubmitPostman (opens in a new tab)
Postman
postman.comCreate your public workspace with sanitized API collections, examples, documentation, and a canonical homepage link on the publisher profile.
Estimated domain authority DA ~90NofollowFreeQuickLive, conditionalAPI Collaboration Network - SubmitProduct Hunt (opens in a new tab)
Product Hunt
producthunt.comLaunch your platform first; prepare maker comment and assets.
Estimated domain authority DA ~90NofollowFreeQuickNot submittedLaunch platform - SubmitRapidAPI Hub (opens in a new tab)
RapidAPI Hub
rapidapi.comList your stable API with OpenAPI definitions, clear endpoints, health checks and its official website in the permitted listing field.
Estimated domain authority DA ~80FreeQuickVerified liveAPI marketplace - SubmitSaaSHub (opens in a new tab)
SaaSHub
saashub.comSubmit platform, add competitor alternatives, verify domain email.
Estimated domain authority DA ~70DofollowFreeQuickNot submittedStartup directory - SubmitSAYUJ by STPI (opens in a new tab)
SAYUJ by STPI
sayuj.netRegister your tool as an Indian startup, complete its offering profile, and use Product Expo or Startup Connect when relevant.
FreeQuickVerified liveGovernment Startup Network - SubmitSmithery MCP Registry (opens in a new tab)
Smithery MCP Registry
smithery.aiPublish a genuine hosted, external, or stdio MCP server exposing a small set of consent-based your tool utilities with complete metadata and documentation.
Estimated domain authority DA ~50FreeQuickNot submittedMCP Ecosystem - SubmitStartupTN (opens in a new tab)
StartupTN
startuptn.inUse the official Register flow and build your verified company profile if Tamil Nadu startup rules are met.
Estimated domain authority DA ~35FreeQuickLive, conditionalState Startup Registry - SubmitTracxn (opens in a new tab)
Tracxn
tracxn.comSubmit the company website and concise product, market, founder, funding, and traction details for analyst review.
Estimated domain authority DA ~75NofollowFreeQuickNot submittedStartup intelligence database - SubmitArtifact Hub (opens in a new tab)
Artifact Hub
artifacthub.ioCreate a valid Helm, OPA, Tekton or supported repository for your deployment and add it through the control panel.
Estimated domain authority DA ~60NofollowFreeModerateVerified liveCloud-native registry - Submitawesome-no-login-web-apps (opens in a new tab)
awesome-no-login-web-apps
github.com/aviaryan/awesome-no-login-web-appsOpen your PR adding no-signup PDF and image tools under the matching category, following CONTRIBUTING.md.
FreeModerateNeeds checkingAwesome list - SubmitClaude Plugin Directory (opens in a new tab)
Claude Plugin Directory
claude.comPackage a narrow, safe your tool plugin with a public repository, validate it with the Claude plugin validator, and submit it through the in-app directory flow.
Estimated domain authority DA ~85FreeModerateNot submittedAI Developer Ecosystem - Submitcrates.io (opens in a new tab)
crates.io
crates.ioPublish your genuine Rust client, CLI, parser, or privacy library and set homepage, repository, README, license, and documentation metadata.
Estimated domain authority DA ~80NofollowFreeModerateLive, conditionalRust Package Registry - SubmitDealroom (opens in a new tab)
Dealroom
dealroom.coCreate or claim your tool, add its verified website, product description, sector, founding details, team, and milestones.
Estimated domain authority DA ~75NofollowFreeModerateVerified liveFounder / Company Profile - SubmitDify Marketplace (opens in a new tab)
Dify Marketplace
dify.aiBuild and test a free Dify plugin for your distinct privacy or file-analysis capability, package it, add a privacy policy, and submit the required pull request.
Estimated domain authority DA ~65FreeModerateNot submittedAI Developer Ecosystem - Submite27 (opens in a new tab)
e27
e27.coCreate your tool company profile with accurate product, team, media, and website details, then submit it for verification.
Estimated domain authority DA ~70Sometimes dofollowFreeModerateNot submittedStartup Directory - SubmitEnterprise League (opens in a new tab)
Enterprise League
enterpriseleague.comCreate and verify your complete company page with offerings, target users, location, and canonical website link.
Estimated domain authority DA ~45FreeModerateVerified liveFounder / Company Profile - SubmitFlipsnack (opens in a new tab)
Flipsnack
flipsnack.comUpload or design your useful privacy report and add contextual external links before public sharing.
Estimated domain authority DA ~75Sometimes dofollowFreeModerateVerified liveDocument Publishing - SubmitGenially (opens in a new tab)
Genially
genially.comCreate your original interactive privacy or accessibility guide and add relevant external actions to cited live tools.
Estimated domain authority DA ~80NofollowFreeModerateVerified liveInteractive Education - SubmitGodot Asset Library (opens in a new tab)
Godot Asset Library
godotengine.orgCreate a useful Godot editor add-on or privacy-safe asset pipeline tool, release it under an accepted license and submit its repository.
Estimated domain authority DA ~80FreeModerateVerified liveGame-development marketplace - SubmitGoogle Workspace Marketplace (opens in a new tab)
Google Workspace Marketplace
workspace.google.comBuild your add-on for Drive, Docs, Sheets, Gmail, or another Workspace product and publish it.
Estimated domain authority DA ~95NofollowFreeModerateLive, conditionalApp Marketplace - SubmitHacker News Show HN (opens in a new tab)
Hacker News Show HN
news.ycombinator.comSubmit as Show HN: your tool - privacy-first toolbox people can try instantly.
Estimated domain authority DA ~90NofollowFreeModerateNot submittedLaunch platform - SubmitJSR (opens in a new tab)
JSR
jsr.ioPublish your standards-based JavaScript or TypeScript SDK with generated docs, readme and project links.
Estimated domain authority DA ~55FreeModerateVerified livePackage Registry - SubmitJuliaHub (opens in a new tab)
JuliaHub
juliahub.comCreate a useful Julia client or data utility, register it in Julia General and provide complete package docs with your source link.
Estimated domain authority DA ~50FreeModerateVerified livePackage registry - SubmitKerala Startup Mission (opens in a new tab)
Kerala Startup Mission
startupmission.kerala.gov.inApply using valid Startup India/DPIIT credentials and complete your tool startup profile for ecosystem visibility.
Estimated domain authority DA ~55FreeModerateLive, conditionalState Startup Registry - SubmitLaunchpad (opens in a new tab)
Launchpad
launchpad.netRegister your genuine open-source component, complete its project summary and link its official homepage and source repository.
Estimated domain authority DA ~90NofollowFreeModerateVerified liveOpen-source project registry - SubmitLeanpub (opens in a new tab)
Leanpub
leanpub.comWrite and publish a substantial original handbook on local-first privacy, web safety, or accessible-tool engineering, including reproducible examples and relevant your tool references.
Estimated domain authority DA ~80Sometimes dofollowFreeModerateVerified liveBook Publishing - SubmitLinear Integration Directory (opens in a new tab)
Linear Integration Directory
linear.appBuild a maintained Linear integration that sends approved your tool audit findings into issues, then submit its listing and assets.
Estimated domain authority DA ~80FreeModerateNot submittedDeveloper Ecosystem - SubmitMaharashtra State Innovation Society (opens in a new tab)
Choose Startup Register and complete your tool verified entity, DPIIT, contact, product and website profile.
Estimated domain authority DA ~30FreeModerateLive, conditionalState Startup Registry - SubmitMattermost Marketplace (opens in a new tab)
Mattermost Marketplace
mattermost.comCreate a supported Mattermost plugin or app that scans user-approved text for sensitive data before sharing, with docs and a public issue tracker.
Estimated domain authority DA ~75FreeModerateNot submittedCollaboration Ecosystem - SubmitMCP Registry (opens in a new tab)
MCP Registry
modelcontextprotocol.ioPackage your real MCP server, verify its namespace, create server.json and publish it with mcp-publisher.
Estimated domain authority DA ~70FreeModerateLive, conditionalOfficial Protocol Registry
How to build backlinks with this list
Four steps that work for a new site, a SaaS or a side project. No paid link packages, nothing that risks a penalty.
Get the basics right first
Before submitting anywhere, have a one-line description, a 150-word description, a square logo and two or three screenshots ready. Every form asks for some mix of these.
Claim profiles and free listings
Start with the free, quick rows: profile creation sites and free directories. They are one form each and build the entity signals search engines use to understand who you are.
Go after a few strong links
Then pick a handful of high DA and dofollow sites that fit your niche, and write proper guest posts or launch posts for them. Ten relevant links beat a hundred random ones.
Track and keep it clean
Note where you submitted and when. Recheck after a month, update stale descriptions, and never pay for bulk link packages: they put the whole site at risk.
Behind the list
A link opportunity is not a link.
Every row here starts as a line in a sheet, gets normalised into one of 16 groups, scored for cost, effort and impact, and written up with the steps to actually submit. The floor below represents that pipeline.
Open the sheet viewAn illustration of the AltF Backlinks floor: opportunities sourced at the back, vetted for cost and effort by the engineering pod, written up for outreach by the design pod, then tracked to placement along a line.
Backlink sites by category
One-shot launches where timing and preparation decide the outcome.
Publications that accept contributed articles. Slow and editorial, but the links are earned.
Fast-growing listings specifically for AI-powered tools.
Extension, plugin and integration stores. Real review processes, real distribution.
Startup listings, beta lists and founder media.
General tool and software catalogues with real search traffic.
B2B review sites. Slow to approve, strong once live.
Package, image and docs hosting that carries real authority.
Showcases judged on craft. A good screenshot matters more than copy.
Write once, link back. Editorial standards vary widely.
Get quoted or distribute a release. Slower, higher ceiling.
Company and local listings. Unglamorous, consistently indexed.
Owned pages you control: company, founder, knowledge-panel entities.
Answer real questions. Never drop a bare link.
Brand surface and referral traffic more than link equity.
Everything that does not fit the buckets above.