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
Usefulimpact 66
- Submitawesome-json (opens in a new tab)
awesome-json
github.com/burningtree/awesome-jsonAdd your JSON formatter/validator under online tools via PR.
FreeModerateNeeds checking - SubmitAwesome-Prompt-Engineering (opens in a new tab)
Awesome-Prompt-Engineering
github.com/promptslab/awesome-prompt-engineeringAdd the AI prompt tools to the Tools/Apps section via PR.
FreeModerateNeeds checking - Submitawesome-web-dev-tools (opens in a new tab)
awesome-web-dev-tools
github.com/naughtyspirit/awesome-web-dev-toolsAdd the developer utilities hub (encoders, formatters, minifiers) under tools.
FreeModerateNeeds checking - Submitdbt Package Hub (opens in a new tab)
dbt Package Hub
hub.getdbt.comBuild a useful dbt package for privacy classification, redaction tests or data-governance macros and add it to the Hub index by pull request.
Estimated domain authority DA ~65FreeModerateVerified live - SubmitEspanso Hub (opens in a new tab)
Espanso Hub
espanso.orgCreate 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.
Estimated domain authority DA ~50FreeModerateVerified live - SubmitFedora COPR (opens in a new tab)
Fedora COPR
copr.fedorainfracloud.orgCreate a COPR project, build maintained RPMs and add your official homepage and package documentation.
Estimated domain authority DA ~70FreeModerateVerified live - Submitfree-for-dev (opens in a new tab)
free-for-dev
github.com/ripienaar/free-for-devOnly if a developer-facing free tier fits (e.g., an API), add it under the right section with the exact free limits.
FreeModerateNeeds checking - SubmitHackMD (opens in a new tab)
HackMD
hackmd.ioCreate a substantive public tutorial or implementation note that uses your tool and includes a contextual source/product link.
Estimated domain authority DA ~75NofollowFreeModerateLive, conditional - SubmitHarvard Dataverse (opens in a new tab)
Harvard Dataverse
dataverse.harvard.eduDeposit your genuine benchmark, evaluation dataset or reproducibility bundle with project URL in the description/metadata.
Estimated domain authority DA ~95FreeModerateLive, conditional - SubmitJitPack (opens in a new tab)
JitPack
jitpack.ioRelease your useful JVM or Android library from GitHub with a working build, release tag, README and canonical project links.
Estimated domain authority DA ~65FreeModerateLive, conditional - SubmitNixpkgs (opens in a new tab)
Nixpkgs
nixos.orgPackage your real CLI or desktop utility, set accurate homepage metadata, test it, and submit the Nixpkgs pull request.
Estimated domain authority DA ~75FreeModerateLive, conditional - Submitopam Repository (opens in a new tab)
opam Repository
opam.ocaml.orgPublish a real OCaml library or CLI integration and use opam's homepage field for its canonical your tool project page.
Estimated domain authority DA ~55FreeModerateLive, conditional - SubmitOpen Science Framework (opens in a new tab)
Open Science Framework
osf.ioCreate your genuine study, reproducibility project or benchmark workspace with project links and public materials.
Estimated domain authority DA ~85NofollowFreeModerateLive, conditional - SubmitOpen Source Observer (opens in a new tab)
Open Source Observer
opensource.observerOpen-source your component, then add its website and repositories through the official oss-directory PR.
Estimated domain authority DA ~30FreeModerateVerified live - SubmitOpenResty Package Manager (opens in a new tab)
OpenResty Package Manager
opm.openresty.orgPublish an open-source Lua/OpenResty package that integrates your privacy or security workflow and includes honest package metadata.
Estimated domain authority DA ~45FreeModerateVerified live - SubmitPulumi Registry (opens in a new tab)
Pulumi Registry
pulumi.comPublish a real multi-language Pulumi provider or component for deploying or configuring your tool, with binaries, SDK packages, schema, documentation, examples, tests, and a registry pull request.
Estimated domain authority DA ~75FreeModerateLive, conditional - SubmitPuppet Forge (opens in a new tab)
Puppet Forge
puppet.comBuild and test a Puppet module for supported your tool setup or security policy, complete metadata.json, package it, and publish through a Forge account.
Estimated domain authority DA ~85FreeModerateNot submitted - Submitsearch-engine-optimization (opens in a new tab)
search-engine-optimization
github.com/marcobiedermann/search-engine-optimizationAdd the free SEO utilities (meta tag checker, robots/sitemap tools) under Tools.
FreeModerateNeeds checking - SubmitWindows Package Manager (opens in a new tab)
Windows Package Manager
learn.microsoft.comSubmit a validated manifest for an installable Windows release with PackageUrl, PublisherUrl and support metadata.
Estimated domain authority DA ~95NofollowFreeModerateVerified live
Long tailimpact 48–46
- Submit21st.dev (opens in a new tab)
21st.dev
21st.devPublish React UI components and link your site from your author profile.
Estimated domain authority DA ~45Sometimes dofollowFreeQuickNeeds checking - SubmitAndroid Arsenal (opens in a new tab)
Android Arsenal
android-arsenal.comSubmit your open-source Android library with its repository link.
Estimated domain authority DA ~55Sometimes dofollowFreeQuickNeeds checking - SubmitBazel Central Registry (opens in a new tab)
Bazel Central Registry
registry.bazel.buildCreate maintained Bazel rules or a module that invokes your real security utility, then submit it to BCR.
Estimated domain authority DA ~50FreeQuickLive, conditional - SubmitCodeTriage (opens in a new tab)
CodeTriage
codetriage.comAdd your repository so contributors can subscribe to help triage its issues.
Estimated domain authority DA ~55Sometimes dofollowFreeQuickNeeds checking - SubmitDocker Hub (opens in a new tab)
Docker Hub
hub.docker.comPublish open-source helper image only if useful.
Estimated domain authority DA ~95NofollowFreeQuickNot submitted - SubmitDotfyle (opens in a new tab)
Dotfyle
dotfyle.comAdd your Neovim plugin or config so it appears in their searchable directory.
Estimated domain authority DA ~40Sometimes dofollowFreeQuickNeeds checking - SubmitFlutter Gems (opens in a new tab)
Flutter Gems
fluttergems.devSuggest your Flutter package so it is categorised in their curated catalog.
Estimated domain authority DA ~45Sometimes dofollowFreeQuickNeeds checking - SubmitFree Public APIs (opens in a new tab)
Free Public APIs
freepublicapis.comSubmit your free API with a description and documentation link.
Estimated domain authority DA ~35Sometimes dofollowFreeQuickNeeds checking - SubmitGentoo Packages (opens in a new tab)
Gentoo Packages
packages.gentoo.orgPrepare and test a policy-compliant ebuild for your stable CLI, including accurate HOMEPAGE and source metadata, then work with a Gentoo developer or proxy maintainer for repository inclusion.
Estimated domain authority DA ~75FreeQuickVerified live - SubmitGood First Issue (opens in a new tab)
Good First Issue
goodfirstissue.devAdd your open-source repo via pull request so beginners find your labelled issues.
Estimated domain authority DA ~50Sometimes dofollowFreeQuickNeeds checking - SubmitHaikuDepot (opens in a new tab)
HaikuDepot
depot.haiku-os.orgPort your functional desktop or CLI utility to Haiku, write and test a compliant recipe, then submit a feature-branch pull request to HaikuPorts.
Estimated domain authority DA ~55FreeQuickVerified live - SubmitJamstack Themes (opens in a new tab)
Jamstack Themes
jamstackthemes.devSubmit your open-source starter or theme for a static site generator.
Estimated domain authority DA ~45Sometimes dofollowFreeQuickNeeds checking - SubmitMade with Svelte (opens in a new tab)
Made with Svelte
madewithsvelte.comSubmit a site, app or component built with Svelte.
Estimated domain authority DA ~45Sometimes dofollowFreeQuickNeeds checking - SubmitModelDB (opens in a new tab)
ModelDB
modeldb.scienceSubmit a licensed computational neuroscience model with code ZIP, publication citation, overview, contributors, and tags.
Estimated domain authority DA ~40FreeQuickVerified live - SubmitOpenDOAR (opens in a new tab)
OpenDOAR
opendoar.ac.ukRegister only after your tool launches a genuine open repository for reusable privacy/security research outputs.
Estimated domain authority DA ~65FreeQuickVerified live - SubmitRacket Package Catalog (opens in a new tab)
Racket Package Catalog
pkgs.racket-lang.orgRelease a real Racket privacy utility or your tool client and register its public package source and documentation.
Estimated domain authority DA ~50FreeQuickLive, conditional - SubmitReact Native Directory (opens in a new tab)
React Native Directory
reactnative.directoryAdd your React Native library through a pull request to their GitHub repo.
Estimated domain authority DA ~55Sometimes dofollowFreeQuickNeeds checking - SubmitUp For Grabs (opens in a new tab)
Up For Grabs
up-for-grabs.netAdd a project file to their GitHub repo pointing at your beginner-friendly issue label.
Estimated domain authority DA ~55Sometimes dofollowFreeQuickNeeds checking - SubmitAwesome Go (opens in a new tab)
Awesome Go
awesome-go.comOpen a pull request to the awesome-go list with your Go library.
Estimated domain authority DA ~55Sometimes dofollowFreeModerateNeeds checking - SubmitBioconda (opens in a new tab)
Bioconda
bioconda.github.ioCreate a tested Bioconda recipe for a genuinely biomedical or bioinformatics your tool utility, with accurate homepage/source metadata, and submit it through the official review workflow.
Estimated domain authority DA ~50FreeModerateVerified live - SubmitCTAN (opens in a new tab)
CTAN
ctan.orgCreate a genuine LaTeX privacy, redaction or document-safety package and include its exact your tool project homepage in the upload metadata.
Estimated domain authority DA ~75FreeModerateLive, conditional
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.