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
Usefulimpact 68
- SubmitBibSonomy (opens in a new tab)
BibSonomy
bibsonomy.orgCurate a tagged public collection of authoritative privacy, accessibility, and safety resources with your tool included only where substantively relevant.
Estimated domain authority DA ~65NofollowFreeQuickVerified liveKnowledge Curation - Submitbio.tools (opens in a new tab)
bio.tools
bio.toolsRegister your genuinely life-science-focused resource with stable homepage, scientific operations, inputs, outputs, licence, and documentation.
Estimated domain authority DA ~55FreeQuickVerified liveLife-Science Research - SubmitBudibase Community Plugins (opens in a new tab)
Budibase Community Plugins
budibase.comBuild your useful Budibase component or data-source plugin, publish the package or repository, and seek inclusion in community plugin resources.
Estimated domain authority DA ~60FreeQuickVerified liveOpen-source Plugin Ecosystem - SubmitCapRover One-Click Apps (opens in a new tab)
CapRover One-Click Apps
caprover.comCreate a tested CapRover one-click definition for your real self-hosted service and contribute it to the linked official community repository.
Estimated domain authority DA ~50FreeQuickVerified liveSelf-hosted App Catalogs - SubmitChanakya Software (opens in a new tab)
Chanakya Software
chanakyasoftware.comCreate a vendor account and list your tool software offering.
FreeQuickVerified liveSoftware Catalog - SubmitClojars (opens in a new tab)
Clojars
clojars.orgRelease a genuine Clojure or JVM client library with a POM, description, homepage and source metadata.
Estimated domain authority DA ~60FreeQuickVerified livePackage Registry - SubmitCommon Workflow Language (opens in a new tab)
Common Workflow Language
commonwl.orgBuild a genuine CWL validator, security tool, or implementation and propose its inclusion with compliance evidence.
Estimated domain authority DA ~55FreeQuickVerified liveWorkflow Standards - SubmitCommudle (opens in a new tab)
Commudle
commudle.comCreate a real developer profile, publish your original engineering tutorial or project, and join only relevant privacy or developer communities.
Estimated domain authority DA ~40FreeQuickVerified liveDeveloper Community - SubmitContao Extensions (opens in a new tab)
Contao Extensions
extensions.contao.orgBuild a functional Contao bundle for your site-audit use case, publish tagged releases on Packagist with contao-bundle and manager-plugin metadata, and let the official index discover it.
Estimated domain authority DA ~45FreeQuickVerified liveCMS Ecosystem - SubmitCPAN / PAUSE (opens in a new tab)
CPAN / PAUSE
cpan.orgPublish a genuine Perl module or CLI through PAUSE with project URLs and clear distribution documentation.
Estimated domain authority DA ~80FreeQuickVerified livePackage Registry - SubmitCreativesFeed (opens in a new tab)
CreativesFeed
creativesfeed.comSubmit relevant your tool utilities under AI, web, or developer categories.
Estimated domain authority DA ~40FreeQuickVerified liveSoftware Directory - SubmitdevChallenges (opens in a new tab)
devChallenges
devchallenges.ioBuild a genuine free challenge solution, publish the deployed project and repository, and use the finished privacy or accessibility implementation as a portfolio case study.
Estimated domain authority DA ~50FreeQuickVerified liveProject Showcase - SubmitDevpost (opens in a new tab)
Devpost
devpost.comEnter a relevant live hackathon with your working project, complete its story and demo, and include the project website where allowed.
Estimated domain authority DA ~85NofollowFreeQuickVerified liveProject Showcase - SubmitESP Component Registry (opens in a new tab)
ESP Component Registry
components.espressif.comBuild an ESP-IDF privacy, credential-safety, secure-logging, or local-processing component, add manifest, license, docs, examples, and publish it through the registry workflow.
Estimated domain authority DA ~65FreeQuickVerified liveEmbedded Development - SubmitF-Droid (opens in a new tab)
F-Droid
f-droid.orgPublish a privacy-respecting open-source Android companion app, then file a packaging request or merge request.
Estimated domain authority DA ~75FreeQuickVerified liveApp Repository - SubmitFluentd Plugin Directory (opens in a new tab)
Fluentd Plugin Directory
fluentd.orgBuild and publish a real fluent-plugin-* RubyGem that redacts/routes privacy-sensitive logs and includes your tool as its project homepage.
Estimated domain authority DA ~65FreeQuickVerified liveLogging Ecosystem - Submitgetfolio.dev (opens in a new tab)
getfolio.dev
getfolio.devCreate a founder/developer portfolio, pin your tool repository/project and add the official website link.
FreeQuickVerified liveDeveloper Portfolio - SubmitGoodreads (opens in a new tab)
Goodreads
goodreads.comCreate your truthful /founder profile or content page and add the website link where allowed.
Estimated domain authority DA ~90NofollowFreeQuickVerified liveProfile / entity - SubmitHackage (opens in a new tab)
Hackage
hackage.haskell.orgRelease a useful Haskell library or command-line client with homepage, source and bug-report metadata.
Estimated domain authority DA ~75FreeQuickVerified livePackage Registry - SubmitHubPages (opens in a new tab)
HubPages
hubpages.comCreate your truthful /founder profile or content page and add the website link where allowed.
Estimated domain authority DA ~85NofollowFreeQuickVerified liveProfile / entity - SubmitHundrED (opens in a new tab)
HundrED
hundred.orgApply with a privacy/digital-safety education program that demonstrates real K-12 impact and scalability.
Estimated domain authority DA ~60FreeQuickVerified liveEducation/Innovation - SubmitJellyfin Plugin Catalog (opens in a new tab)
Jellyfin Plugin Catalog
jellyfin.orgBuild a functional Jellyfin privacy, metadata-cleanup, or local-safety plugin with a maintained manifest repository, then propose its repository and documentation entry.
Estimated domain authority DA ~70FreeQuickVerified liveMedia Server Extensions - SubmitKnowledge Commons / CORE (opens in a new tab)
Knowledge Commons / CORE
hcommons.orgCreate a truthful scholarly profile and deposit an original privacy, accessibility, or digital-humanities paper or teaching resource with its related your tool URL.
Estimated domain authority DA ~70NofollowFreeQuickVerified liveResearch Profile / Repository - SubmitLineZine (opens in a new tab)
LineZine
linezine.comChoose the free listing or purchase your dedicated product page.
Estimated domain authority DA ~20FreeQuickVerified liveTool Directory - SubmitLuaRocks (opens in a new tab)
LuaRocks
luarocks.orgCreate a useful Lua client or helper, publish its rockspec and include homepage, license and source links.
Estimated domain authority DA ~55FreeQuickVerified livePackage Registry - SubmitMastra Templates and Integrations (opens in a new tab)
Mastra Templates and Integrations
mastra.aiCreate your working public integration or reusable Mastra template with repository and documentation for review and cross-listing.
Estimated domain authority DA ~50FreeQuickVerified liveAI Agent Ecosystems - Submitnapari Hub (opens in a new tab)
napari Hub
napari-hub.orgCreate a useful npe2 napari plugin for image privacy, metadata inspection or scientific redaction, publish it correctly on PyPI and let the official hub index its project metadata.
Estimated domain authority DA ~40FreeQuickVerified liveScientific Plugin Ecosystem - SubmitParticipedia (opens in a new tab)
Participedia
participedia.netDocument a real participatory public-decision deployment as a Case, Method or Organization entry with evaluations and project URL.
Estimated domain authority DA ~50FreeQuickVerified liveCivic Participation - Submitpckt (opens in a new tab)
pckt
pckt.blogCreate your genuine publication and post substantial product research, tutorials or engineering notes.
FreeQuickVerified liveOpen Social Publishing - SubmitProcessWire Modules Directory (opens in a new tab)
ProcessWire Modules Directory
processwire.comBuild a ProcessWire admin module for external URL, metadata, accessibility or security audits, register as a module author and submit it to the official directory.
Estimated domain authority DA ~65FreeQuickVerified liveCMS Ecosystem - SubmitRabbitMQ Community Plugins (opens in a new tab)
RabbitMQ Community Plugins
rabbitmq.comBuild a stable open-source RabbitMQ plugin for your legitimate security/privacy workflow and ask the RabbitMQ team to list it.
Estimated domain authority DA ~80FreeQuickVerified liveInfrastructure Integration - SubmitResearch Software Directory (opens in a new tab)
Research Software Directory
research-software-directory.orgRequest access, then publish your rich research-software page with source, getting-started URL, DOI, contributors, and research mentions.
Estimated domain authority DA ~35FreeQuickVerified liveResearch Software Registry - SubmitRoadie Backstage Plugins Directory (opens in a new tab)
Roadie Backstage Plugins Directory
roadie.ioPublish a substantial open-source Backstage plugin that integrates your tool privacy/security checks, then request inclusion if the directory does not discover it.
Estimated domain authority DA ~50FreeQuickVerified liveDeveloper Ecosystem - SubmitSciCrunch RRID Resource Portal (opens in a new tab)
SciCrunch RRID Resource Portal
scicrunch.orgRegister a stable, genuinely research-used your tool software, service, or database with accurate maintainer and version metadata.
Estimated domain authority DA ~60FreeQuickVerified liveResearch Resources - SubmitSilverstripe Add-ons (opens in a new tab)
Silverstripe Add-ons
addons.silverstripe.orgBuild a maintained Silverstripe CMS module for your useful privacy, accessibility or URL-audit workflow, publish it with correct Composer metadata and submit it to the public directory.
Estimated domain authority DA ~60FreeQuickVerified liveCMS Ecosystem - SubmitSketchfab (opens in a new tab)
Sketchfab
sketchfab.comPublish an original educational 3D asset connected to your real tutorial, with accurate credits and a contextual project link in the description.
Estimated domain authority DA ~90NofollowFreeQuickVerified live3D creator community - SubmitTolodora (opens in a new tab)
Tolodora
tolodora.comAdd your tool as a SaaS or online service with its official URL.
FreeQuickVerified liveSaaS Directory - SubmitUlauncher Extensions (opens in a new tab)
Ulauncher Extensions
ulauncher.ioBuild a Python keyword extension that runs useful your tool URL, domain or metadata checks and displays concise results, then submit its public repository through the official form.
Estimated domain authority DA ~40FreeQuickVerified liveDesktop Launcher - SubmitVenture by MyVenture (opens in a new tab)
Venture by MyVenture
myventure.devCreate a founder profile, add your tool as a startup and share authentic milestones or metrics.
FreeQuickVerified liveFounder / Company Profile - SubmitVim Online Scripts (opens in a new tab)
Vim Online Scripts
vim.orgBuild and upload a genuinely useful Vim privacy or secret-checking plugin with your tool documentation and a relevant project link.
Estimated domain authority DA ~75FreeQuickVerified liveDeveloper Ecosystems
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.