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
- 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, conditional - 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, conditional - 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, conditional - SubmitPackagist (opens in a new tab)
Packagist
packagist.orgPublish your real PHP SDK or integration from a public repository and set the canonical homepage in composer.json.
Estimated domain authority DA ~75NofollowFreeModerateLive, conditional - SubmitPyPI (opens in a new tab)
PyPI
pypi.orgPublish your real Python SDK, CLI, or integration package and set Homepage, Documentation, Source, and Issues URLs in package metadata.
Estimated domain authority DA ~90NofollowFreeModerateLive, conditional - SubmitRubyGems.org (opens in a new tab)
RubyGems.org
rubygems.orgPublish and maintain your genuine Ruby client, CLI, or integration gem with accurate homepage, source, documentation, and changelog metadata.
Estimated domain authority DA ~80NofollowFreeModerateLive, conditional
High impactimpact 86–84
- SubmitTerraform Registry (opens in a new tab)
Terraform Registry
registry.terraform.ioPublish 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.
Estimated domain authority DA ~80FreeQuickLive, conditional - 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, conditional - 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, conditional - 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, conditional - SubmitOpenSourceFest (opens in a new tab)
OpenSourceFest
opensourcefest.orgSubmit your maintained open-source project through Submit a Project.
FreeModerateLive, conditional - 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, conditional - 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, conditional
Usefulimpact 68–66
- SubmitCloudsmith (opens in a new tab)
Cloudsmith
cloudsmith.comCreate your public package repository for genuine releases and complete its namespace, description, licence and source/homepage metadata.
Estimated domain authority DA ~60FreeQuickLive, conditional - SubmitCocoaPods (opens in a new tab)
CocoaPods
cocoapods.orgPublish a genuine iOS or macOS your tool SDK and set homepage/source URLs in its podspec.
Estimated domain authority DA ~75FreeQuickLive, conditional - SubmitDjango Packages (opens in a new tab)
Django Packages
djangopackages.orgAfter releasing a genuinely Django-relevant open-source component, sign in and add its GitHub or GitLab repository and accurate project links.
Estimated domain authority DA ~60FreeQuickLive, conditional - SubmitFlakeHub (opens in a new tab)
FlakeHub
flakehub.comPublish your genuine versioned Nix flake under the correct GitHub owner and maintain its README and project links.
Estimated domain authority DA ~45FreeQuickLive, conditional - Submitfreshcode.club (opens in a new tab)
freshcode.club
freshcode.clubSubmit your real maintained open-source release with accurate categories and project metadata.
Estimated domain authority DA ~40FreeQuickLive, conditional - SubmitHaxelib (opens in a new tab)
Haxelib
lib.haxe.orgRelease a useful Haxe SDK or privacy utility and set haxelib.json's URL to your relevant documentation page.
Estimated domain authority DA ~55FreeQuickLive, conditional - SubmitOpenTofu Public Registry (opens in a new tab)
OpenTofu Public Registry
registry.opentofu.orgRelease your reusable -related security or privacy module from a correctly named public GitHub repository.
Estimated domain authority DA ~50FreeQuickLive, conditional - SubmitRepoz (opens in a new tab)
Repoz
repoz.ioSubmit your maintained open-source component for community review.
FreeQuickLive, conditional - SubmitScoop (opens in a new tab)
Scoop
scoop.shPublish and maintain a tested Scoop manifest for your actual portable Windows CLI or app.
Estimated domain authority DA ~55FreeQuickLive, conditional - SubmitarXiv (opens in a new tab)
arXiv
arxiv.orgSubmit your original -related technical paper and cite your tool only where it is genuinely the software or study subject.
Estimated domain authority DA ~95NofollowFreeModerateLive, conditional - 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 - 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
Long tailimpact 48–46
- 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 - 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 - 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 - SubmitDUB Registry (opens in a new tab)
DUB Registry
code.dlang.orgPublish a useful D client library or privacy utility with accurate homepage and repository metadata in dub.json or dub.sdl.
Estimated domain authority DA ~60FreeModerateLive, 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.