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 68–63
- Submititch.io (opens in a new tab)
itch.io
itch.ioPublish a genuine browser or desktop your tool utility with screenshots, documentation and an official-site link.
Estimated domain authority DA ~90NofollowFreeQuickLive, conditional - 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 live - 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 live - SubmitPublicAPIs.io (opens in a new tab)
PublicAPIs.io
publicapis.ioList your legitimate documented API in the relevant developer category using the normal or Pro review queue.
Estimated domain authority DA ~40FreeQuickLive, conditional - 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 live - SubmitArtStation (opens in a new tab)
ArtStation
artstation.comPublish an original UI/UX visual case study showing your tool interaction design, accessibility states, and design process, with a contextual project URL.
Estimated domain authority DA ~85NofollowFreeModerateVerified live - SubmitbalenaHub (opens in a new tab)
balenaHub
hub.balena.ioBuild a deployable edge privacy utility or reusable block, add balena.yml metadata, public source, configuration and multi-device tests, then publish it on balenaHub.
Estimated domain authority DA ~65FreeModerateVerified live - SubmitCharmhub (opens in a new tab)
Charmhub
charmhub.ioPackage your maintained self-hosted deployment as a Juju charm with canonical documentation, source, and support links.
Estimated domain authority DA ~60FreeModerateVerified live - SubmitCK-12 FlexBooks (opens in a new tab)
CK-12 FlexBooks
ck12.orgCreate an age-appropriate digital-citizenship or privacy FlexBook chapter with practical your tool exercises.
Estimated domain authority DA ~80FreeModerateVerified live - SubmitCoolify One-Click Services (opens in a new tab)
Coolify One-Click Services
coolify.ioCreate and fully test your Docker Compose service template, add metadata, logo, and documentation, then submit it to Coolify's next branch.
Estimated domain authority DA ~60FreeModerateVerified live - SubmitELIXIR TeSS (opens in a new tab)
ELIXIR TeSS
tess.elixir-europe.orgRegister a substantive life-science privacy, medical-data de-identification, or research-data training resource hosted by your tool.
Estimated domain authority DA ~45FreeModerateVerified live - SubmitFAIRsharing (opens in a new tab)
FAIRsharing
fairsharing.orgSubmit your genuine -maintained database, reusable reporting standard, or data policy with complete stewardship metadata.
Estimated domain authority DA ~60FreeModerateVerified live - SubmitGovStack (opens in a new tab)
GovStack
govstack.globalJoin a working group and contribute a substantive building-block specification, use case, reference implementation or new proposal.
Estimated domain authority DA ~45FreeModerateVerified live - SubmitHomebrew (opens in a new tab)
Homebrew
brew.shAfter releasing your real CLI or native app, submit a tested formula or cask with its canonical homepage.
Estimated domain authority DA ~75FreeModerateLive, conditional - SubmitHumanitarian Data Exchange (opens in a new tab)
Humanitarian Data Exchange
data.humdata.orgJoin an approved organization and publish a documented humanitarian privacy/safety dataset with licence and responsible-access settings.
Estimated domain authority DA ~80FreeModerateVerified live - SubmitJSON Schema Store (opens in a new tab)
JSON Schema Store
schemastore.orgAfter your tool has a stable, commonly used JSON or YAML configuration format, contribute its accurate schema and test fixtures so editors can provide validation, completion, and tooltips.
Estimated domain authority DA ~55FreeModerateLive, conditional - SubmitNLnet Foundation (opens in a new tab)
NLnet Foundation
nlnet.nlApply with your concrete privacy, security or user-autonomy FOSS work package, milestones, budget and public repository.
Estimated domain authority DA ~65FreeModerateLive, conditional - SubmitOctopus (opens in a new tab)
Octopus
octopus.acUse ORCID to publish genuine research stages—problem, method, data or analysis—with contextual your tool code/data links.
Estimated domain authority DA ~40FreeModerateVerified live - SubmitOmeka S Modules (opens in a new tab)
Omeka S Modules
omeka.orgCreate a maintained Omeka S module for collection metadata privacy, accessibility or link auditing, package it correctly and register the add-on with project and author links.
Estimated domain authority DA ~65FreeModerateVerified live - SubmitOpen Research Knowledge Graph (opens in a new tab)
Open Research Knowledge Graph
orkg.orgCreate a rigorous structured comparison of published privacy, redaction, or accessibility studies and include your tool only when supported by research.
Estimated domain authority DA ~45FreeModerateVerified live - SubmitOSF (opens in a new tab)
OSF
osf.ioCreate a public reproducibility project for your tool research, datasets, test methods, or privacy benchmarks and link the genuine project/site.
Estimated domain authority DA ~85NofollowFreeModerateVerified live - Submitportfolio.dev (opens in a new tab)
portfolio.dev
portfolio.devCreate a public case-study portfolio and add your tool with screenshots, live demo and build rationale.
FreeModerateVerified live - SubmitReliefWeb (opens in a new tab)
ReliefWeb
reliefweb.intAfter your tool has eligible ReliefWeb content, request publishing access and submit humanitarian reports or training from verified owned URLs.
Estimated domain authority DA ~85FreeModerateVerified live - SubmitRenkuLab (opens in a new tab)
RenkuLab
renkulab.ioCreate your reproducible evaluation project with code, data connectors, environment, narrative, and a public session launcher.
Estimated domain authority DA ~40FreeModerateVerified live - SubmitWhole Tale (opens in a new tab)
Whole Tale
wholetale.orgCreate a reproducible Tale containing your evaluation's data, code, environment, outputs, and narrative, then publish through a supported repository.
Estimated domain authority DA ~40FreeModerateVerified live - SubmitBCcampus Open Collection (opens in a new tab)
BCcampus Open Collection
bccampus.caPublish a Canadian-ready, openly licensed privacy or digital-citizenship textbook and use Contribute → Suggest a Textbook.
Estimated domain authority DA ~70Free + paid tierModerateVerified live - SubmitBuzzsprout (opens in a new tab)
Buzzsprout
buzzsprout.comLaunch your real educational podcast, complete its public site, and cite relevant tools and sources in useful show notes.
Estimated domain authority DA ~85Sometimes dofollowFree + paid tierModerateLive, conditional - SubmitCalaméo (opens in a new tab)
Calaméo
calameo.comPublish a polished original guide, research brief, or accessibility zine as a public document, with useful references and your relevant link inside the editorial content.
Estimated domain authority DA ~85NofollowFree + paid tierModerateVerified live - SubmitCargo (opens in a new tab)
Cargo
cargo.siteCreate an authentic your tool or founder design portfolio with substantive case studies and contextual links to shipped tools.
Estimated domain authority DA ~75Sometimes dofollowFree + paid tierModerateLive, conditional - SubmitCrevado (opens in a new tab)
Crevado
crevado.comCreate your complete product case study and add the canonical URL naturally within project text or a linked image.
Estimated domain authority DA ~60Sometimes dofollowFree + paid tierModerateNot submitted - SubmitDSCI Threat Intelligence & Research (opens in a new tab)
Pitch an original evidence-backed privacy, scam, or cyber advisory based on genuine your tool research.
Estimated domain authority DA ~50FreeInvolvedVerified live - SubmitInteroperable Europe / Joinup Solutions (opens in a new tab)
Interoperable Europe / Joinup Solutions
interoperable-europe.ec.europa.euPublish a mature open-source interoperability or public-administration solution with documentation, releases, licence, and owner metadata.
Estimated domain authority DA ~95FreeInvolvedVerified live - SubmitJourno Portfolio (opens in a new tab)
Journo Portfolio
journoportfolio.comCreate a founder portfolio with original your tool launch notes or product case studies and use an external-link page for the canonical website.
Estimated domain authority DA ~50Sometimes dofollowFree + paid tierModerateNot submitted - SubmitMilkshake (opens in a new tab)
Milkshake
milkshake.appBuild your free mobile mini-site with brand story, key collections, demos and contact links.
Estimated domain authority DA ~50Free + paid tierModerateVerified live - SubmitPaperCall (opens in a new tab)
PaperCall
papercall.ioSubmit useful your tool-related talks to relevant CFPs or run a genuine community CFP with a public event page.
Estimated domain authority DA ~55FreeInvolvedLive, conditional - SubmitPodcast Movement (opens in a new tab)
Podcast Movement
podcastmovement.comSubmit an educational, non-sales session on privacy-safe tooling or accessible creator workflows when the next CFP opens.
Estimated domain authority DA ~60FreeInvolvedVerified live - SubmitPortship (opens in a new tab)
Portship
portship.appClaim a builder profile and add your tool as a shipped project using its live public URL.
Free + paid tierModerateVerified live - Submitpretalx (opens in a new tab)
pretalx
pretalx.comUse pretalx for your genuine community conference or submit relevant talks to events that use the platform.
Estimated domain authority DA ~55Free + paid tierModerateLive, conditional - SubmitReactJS Example (opens in a new tab)
ReactJS Example
reactjsexample.comSubmit a reusable open-source React component extracted from your tool with repository, demo, setup docs and screenshots.
Estimated domain authority DA ~50DofollowFreeInvolvedLive, conditional - SubmitResearch Data Alliance Adoption Stories (opens in a new tab)
Research Data Alliance Adoption Stories
rd-alliance.orgDocument your real implementation of a named RDA recommendation with challenge, measurable outcome, lessons, and supporting resources.
Estimated domain authority DA ~65FreeInvolvedVerified live
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.