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 filters2
High impactimpact 84–83
- SubmitAgentic.ai (opens in a new tab)
Agentic.ai
agentic.aiSubmit only your agent that independently decides, acts, and observes.
FreeModerateLive, conditionalAI Agent Directory - SubmitAI ToolNet (opens in a new tab)
AI ToolNet
aitoolnet.comSubmit only your tool features that genuinely use AI, after checking for an existing listing and preparing accurate pricing and use cases.
Estimated domain authority DA ~30FreeModerateLive, conditionalAI tool directory - SubmitAirbyte Connector Marketplace (opens in a new tab)
Airbyte Connector Marketplace
airbyte.comCreate a real source connector that lets consenting users export appropriate your tool data, provide tests and documentation, and contribute it to Airbyte's public connector catalog.
Estimated domain authority DA ~70NofollowFreeModerateLive, conditionalDeveloper Ecosystem - SubmitAmazon Music for Podcasters (opens in a new tab)
Amazon Music for Podcasters
podcasters.amazon.comSubmit and verify one genuine your tool podcast feed for distribution on Amazon Music and Audible.
Estimated domain authority DA ~95NofollowFreeModerateLive, conditionalPodcast Directory - SubmitAPILayer Marketplace (opens in a new tab)
APILayer Marketplace
apilayer.comPublish a stable, documented your tool API and apply as a provider with examples, uptime, support, and honest pricing.
Estimated domain authority DA ~60FreeModerateLive, conditionalAPI Marketplace - SubmitCastbox (opens in a new tab)
Castbox
castbox.fmAdd or claim your real podcast in Creator Studio and complete channel, site and episode metadata.
Estimated domain authority DA ~75NofollowFreeModerateLive, conditionalPodcast Directory - SubmitChocolatey Community Repository (opens in a new tab)
Chocolatey Community Repository
chocolatey.orgShip your real CLI or desktop utility as a tested package with homepage, project and support metadata.
Estimated domain authority DA ~75NofollowFreeModerateLive, conditionalWindows Package Registry - SubmitDatadog Integrations (opens in a new tab)
Datadog Integrations
datadoghq.comApply as a Datadog Technology Partner and build a production-grade integration that sends meaningful your tool telemetry, includes dashboards and documentation, and is useful to shared customers.
Estimated domain authority DA ~85NofollowFreeModerateLive, conditionalObservability Ecosystem - SubmitDiscord App Directory (opens in a new tab)
Discord App Directory
discord.comBuild and verify your Discord app, then enable Discovery in the Developer Portal.
Estimated domain authority DA ~95NofollowFreeModerateLive, conditionalCommunication App Directory - SubmitDocker Hub (opens in a new tab)
Docker Hub
docker.comPublish your maintained CLI or server image with source, documentation, descriptions and canonical homepage links.
Estimated domain authority DA ~90NofollowFreeModerateLive, conditionalContainer Ecosystem - SubmitElastic Integrations (opens in a new tab)
Elastic Integrations
elastic.coBuild an Elastic package that ingests legitimate your tool logs, metrics, or traces and supplies mappings, pipelines, dashboards, documentation, sample data, and automated tests.
Estimated domain authority DA ~85NofollowFreeModerateLive, conditionalObservability Ecosystem - SubmitFirefox Add-ons (opens in a new tab)
Firefox Add-ons
mozilla.orgBuild your useful privacy-preserving extension, submit a signed build, and provide honest homepage, permissions and privacy disclosures.
Estimated domain authority DA ~95NofollowFreeModerateLive, conditionalBrowser Extension - SubmitFOSSHub (opens in a new tab)
FOSSHub
fosshub.comApply with a signed, downloadable open-source or qualifying freeware build that needs reliable binary hosting, malware scanning, and a public project page.
Estimated domain authority DA ~70FreeModerateLive, conditionalOpen-Source Distribution - SubmitGitBook Integration Marketplace (opens in a new tab)
GitBook Integration Marketplace
gitbook.comBuild your real documentation/privacy integration, publish it as public, test it, then submit for GitBook review.
Estimated domain authority DA ~80NofollowFreeModerateLive, conditionalDeveloper Marketplace - SubmitGoogle Open Source Insights (opens in a new tab)
Google Open Source Insights
deps.devPublish your useful package to a supported registry with accurate source and homepage metadata so Open Source Insights can index it.
Estimated domain authority DA ~60FreeModerateLive, conditionalPackage Intelligence - SubmitHome Assistant Integrations (opens in a new tab)
Home Assistant Integrations
home-assistant.ioBuild and maintain a genuinely useful Home Assistant integration for your mature service, including the required Python client library, tests, documentation, and a focused Core pull request.
Estimated domain authority DA ~85FreeModerateLive, conditionalDeveloper Ecosystem - SubmitIFTTT Services (opens in a new tab)
IFTTT Services
ifttt.comJoin the partner platform and create your secure service with genuinely useful triggers, queries, and actions, pass endpoint tests and review, then publish helpful Applets for real user workflows.
Estimated domain authority DA ~90NofollowFreeModerateLive, conditionalAutomation Ecosystem - SubmitKaggle (opens in a new tab)
Kaggle
kaggle.comPublish your clean benchmark or open dataset plus a reproducible notebook, with proper licensing and the canonical project URL in the data card.
Estimated domain authority DA ~90NofollowFreeModerateLive, conditionalData Science Community - SubmitLinuxLinks (opens in a new tab)
LinuxLinks
linuxlinks.comSubmit your maintained desktop or CLI utility only after it runs natively on a modern Linux distribution and has a public OSI-approved license and repository.
Estimated domain authority DA ~60DofollowFreeModerateLive, conditionalOpen-Source Discovery - SubmitLocal-First Software (LoFi) (opens in a new tab)
Local-First Software (LoFi)
lofi.soPropose eligible your tool client-side or offline-first tools to the public directory with accurate site and source links.
FreeModerateLive, conditionalLocal-First Software Directory - SubmitMixcloud (opens in a new tab)
Mixcloud
mixcloud.comUpload your original audio explainer and place relevant resource links naturally in the show description.
Estimated domain authority DA ~90NofollowFreeModerateLive, conditionalAudio & Podcast - SubmitNew Relic Instant Observability (opens in a new tab)
New Relic Instant Observability
newrelic.comCreate a useful quickstart for monitoring your real deployment, with instrumentation instructions, a working data source, dashboards, alerts, documentation, and a GitHub contribution.
Estimated domain authority DA ~90FreeModerateLive, conditionalObservability Ecosystem - SubmitODIPA Community Privacy Tools (opens in a new tab)
ODIPA Community Privacy Tools
odipa.orgSubmit your mature privacy component for technical and security review.
FreeModerateLive, conditionalPrivacy Tool Directory - SubmitOpen Collective (opens in a new tab)
Open Collective
opencollective.comCreate your genuine collective, complete its public profile, and add the official website plus repository/social links.
Estimated domain authority DA ~85NofollowFreeModerateLive, conditionalOpen-Source Funding & Profile - SubmitOpenSourceFest (opens in a new tab)
OpenSourceFest
opensourcefest.orgSubmit your maintained open-source project through Submit a Project.
FreeModerateLive, conditionalOpen-Source Directory - SubmitOpenSSF Scorecard (opens in a new tab)
OpenSSF Scorecard
scorecard.devRun Scorecard on your public component, enable published results, remediate checks, and link the public viewer from repository documentation.
Estimated domain authority DA ~40FreeModerateLive, conditionalOpen-source Security - SubmitOpenwall oss-security (opens in a new tab)
Openwall oss-security
openwall.comPost only a self-contained initial announcement of a substantial open-source defensive tool, a major update, or a properly coordinated OSS vulnerability disclosure.
Estimated domain authority DA ~75FreeModerateLive, conditionalOpen-Source Security - SubmitPeerSpot (opens in a new tab)
PeerSpot
peerspot.comContact PeerSpot with your tool enterprise use cases and real-customer evidence to request inclusion.
Estimated domain authority DA ~70FreeModerateLive, conditionalEnterprise software review community - SubmitPodcast Addict (opens in a new tab)
Podcast Addict
podcastaddict.comSubmit your valid public podcast feed and keep website and episode-link metadata accurate.
Estimated domain authority DA ~70FreeModerateLive, conditionalPodcast Directory - SubmitPodchaser (opens in a new tab)
Podchaser
podchaser.comClaim your genuine show, verify ownership, and complete its official website and creator details.
Estimated domain authority DA ~75NofollowFreeModerateLive, conditionalPodcast Database - Submitprotocols.io (opens in a new tab)
protocols.io
protocols.ioPublish your reproducible testing, privacy-analysis or accessibility-evaluation method and cite relevant project resources.
Estimated domain authority DA ~75FreeModerateLive, conditionalResearch Methods Repository - SubmitRailway Templates (opens in a new tab)
Railway Templates
railway.comPublish your maintained open-source service template with safe variables, health checks, documentation and a demo.
Estimated domain authority DA ~70FreeModerateLive, conditionalDeployment Marketplace - SubmitREUSE API (opens in a new tab)
REUSE API
reuse.softwareMake your real public repository REUSE-compliant, register its Git URL, and link the resulting compliance page from project docs.
Estimated domain authority DA ~50FreeModerateLive, conditionalOpen-source Compliance - SubmitSplunkbase (opens in a new tab)
Splunkbase
splunk.comBuild a useful Splunk app or add-on for legitimate your tool security, audit, or operational data; package it with clear documentation, icons, screenshots, release metadata, and support details.
Estimated domain authority DA ~90FreeModerateLive, conditionalObservability Ecosystem - SubmitSpotify for Creators (opens in a new tab)
Spotify for Creators
creators.spotify.comHost or claim your genuine show, verify the RSS email, and publish accurate episode notes with relevant HTTPS resources.
Estimated domain authority DA ~95NofollowFreeModerateLive, conditionalPodcast Directory - SubmitSwagger Studio (opens in a new tab)
Swagger Studio
app.swaggerhub.comPublish your real OpenAPI definition publicly with an accurate description and external documentation URL.
Estimated domain authority DA ~75NofollowFreeModerateLive, conditionalAPI Directory - SubmitTODO Group OSPO Landscape (opens in a new tab)
TODO Group OSPO Landscape
todogroup.orgCreate your real OSPO function or a tool that materially supports OSPO work, then contribute the logo and canonical URL by issue or pull request.
Estimated domain authority DA ~55FreeModerateLive, conditionalOpen-source Governance - SubmitVercel Integrations Marketplace (opens in a new tab)
Vercel Integrations Marketplace
vercel.comBuild your Vercel integration, distribute its page, gain adoption, then apply for Marketplace visibility.
Estimated domain authority DA ~90FreeModerateLive, conditionalDeveloper Integration Marketplace - SubmitXero App Store (opens in a new tab)
Xero App Store
developer.xero.comBuild your accounting/privacy integration, validate it with customers, certify and publish it in the Xero App Store.
Estimated domain authority DA ~85NofollowFreeModerateLive, conditionalAccounting App Marketplace - SubmitMCP.so (opens in a new tab)
MCP.so
mcp.soSubmit your real public MCP server repository with correct name, install steps and configuration details.
Estimated domain authority DA ~50Free + paid tierQuickLive, conditionalMCP Directory
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.