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
High impactimpact 86–84
- SubmitApache Airflow Ecosystem (opens in a new tab)
Apache Airflow Ecosystem
airflow.apache.orgCreate your real Airflow provider with hooks/operators and documentation metadata, publish it, then add it to Airflow’s Ecosystem page by PR.
Estimated domain authority DA ~90NofollowFreeQuickVerified live - SubmitAPIList.fun (opens in a new tab)
APIList.fun
apilist.funRecommend your official API with its documentation URL, concise Markdown description, category, and technical details.
Estimated domain authority DA ~45FreeQuickLive, conditional - SubmitAPIs.guru OpenAPI Directory (opens in a new tab)
APIs.guru OpenAPI Directory
apis.guruWhen your tool exposes a stable public API, host an official OpenAPI definition at a permanent URL and submit it with accurate ownership, category, logo, and metadata.
Estimated domain authority DA ~50FreeQuickLive, conditional - SubmitFOSSRadar (opens in a new tab)
FOSSRadar
fossradar.devAfter open-sourcing a maintained component, submit the TOML project file and website through GitHub PR.
FreeQuickVerified live - SubmitFourthwall (opens in a new tab)
Fourthwall
fourthwall.comOffer a substantial free privacy checklist, accessibility workbook, or safety template from a branded storefront and link your tool only as supporting documentation.
Estimated domain authority DA ~70NofollowFreeQuickVerified live - SubmitGlobal Accessibility Awareness Day (opens in a new tab)
Global Accessibility Awareness Day
accessibility.dayHost a genuine public accessibility learning or testing event and submit its dates, description and your tool event URL.
Estimated domain authority DA ~30FreeQuickVerified live - SubmitGoodpods (opens in a new tab)
Goodpods
goodpods.comSearch for and claim your real podcast, then keep its RSS-supplied website and episode metadata accurate.
Estimated domain authority DA ~60NofollowFreeQuickLive, conditional - SubmitHSTS Preload List (opens in a new tab)
HSTS Preload List
hstspreload.orgAudit every your tool subdomain, stage HSTS safely, then submit the base domain only after long-term HTTPS readiness is proven.
Estimated domain authority DA ~70FreeQuickNot submitted - SubmitListen Notes (opens in a new tab)
Listen Notes
listennotes.comSubmit your real podcast RSS feed whose show website and episode notes naturally reference relevant tools.
Estimated domain authority DA ~80DofollowFreeQuickLive, conditional - SubmitOpenChain (opens in a new tab)
OpenChain
openchainproject.orgImplement a scoped open-source compliance or security-assurance program, self-certify honestly, then request your tool Community of Conformance listing.
Estimated domain authority DA ~50FreeQuickVerified live - SubmitPlayer FM (opens in a new tab)
Player FM
player.fmSubmit your genuine podcast RSS feed or Apple Podcasts URL with accurate show-website and episode metadata.
Estimated domain authority DA ~80NofollowFreeQuickLive, conditional - SubmitPocket Casts (opens in a new tab)
Pocket Casts
pocketcasts.comSubmit your real public podcast RSS feed whose metadata and episode notes reference the official site naturally.
Estimated domain authority DA ~70FreeQuickLive, conditional - SubmitPulseMCP (opens in a new tab)
PulseMCP
pulsemcp.comSubmit your tool MCP repository or public server URL, preferably after publishing it to the official MCP Registry.
Estimated domain authority DA ~45FreeQuickLive, conditional - SubmitPWA Directory (opens in a new tab)
PWA Directory
pwa.directoryFirst pass PWA checks, then submit the installable HTTPS app with manifest, service worker, offline behavior, icons, and screenshots.
Estimated domain authority DA ~35FreeQuickLive, conditional - SubmitSensu Bonsai (opens in a new tab)
Sensu Bonsai
bonsai.sensu.ioPublish an open-source Sensu check/handler for your tool, create GitHub releases and bonsai.yml, then register it with description and tags.
Estimated domain authority DA ~50FreeQuickVerified live - SubmitStackStorm Exchange (opens in a new tab)
StackStorm Exchange
exchange.stackstorm.orgCreate a useful StackStorm integration or automation pack for your workflow, then submit it through the official Exchange Incubator pull-request process.
Estimated domain authority DA ~45FreeQuickVerified live - 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, conditional - SubmitBitrise Step Library (opens in a new tab)
Bitrise Step Library
bitrise.ioBuild a Bitrise Step that runs your tool secret, privacy, or accessibility checks on explicitly chosen build artifacts.
Estimated domain authority DA ~70FreeModerateVerified live - 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, conditional - SubmitCrowdSec Hub (opens in a new tab)
CrowdSec Hub
app.crowdsec.netCreate a defensive parser, scenario, or collection for your real -supported log source, document and test it, then submit it to CrowdSec Hub.
Estimated domain authority DA ~50FreeModerateVerified live - SubmitDaggerverse (opens in a new tab)
Daggerverse
dagger.ioCreate a TypeScript or Go module that runs your tool web audits in CI and returns machine-readable JSON/SARIF with useful pass/fail thresholds, then publish it to Daggerverse.
Estimated domain authority DA ~60FreeModerateVerified live - SubmitIndie Makers Hub (opens in a new tab)
Indie Makers Hub
indiemakershub.comSubmit your tool through the official reviewed product form.
FreeModerateVerified live - SubmitInternet.nl Hall of Fame (opens in a new tab)
Internet.nl Hall of Fame
internet.nlRun the website and email tests, fix IPv6, DNSSEC, HTTPS, security headers, DMARC/DKIM/SPF, STARTTLS/DANE, and RPKI gaps, then retain a 100% score.
Estimated domain authority DA ~60FreeModerateNot submitted - SubmitJS.ORG (opens in a new tab)
JS.ORG
js.orgCreate a genuine JavaScript SDK or demo on GitHub Pages and request an appropriate js.org subdomain that links to its official your tool documentation.
Estimated domain authority DA ~70DofollowFreeModerateVerified live - SubmitLangflow Component Bundles (opens in a new tab)
Langflow Component Bundles
langflow.orgContribute your provider bundle with useful privacy or security components and provider documentation links.
Estimated domain authority DA ~50FreeModerateVerified live - 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, conditional - SubmitMaven (opens in a new tab)
Maven
maven.comBuild and teach a live, project-based cohort on creating local-first privacy tools or accessible web utilities, supported by a substantive public syllabus and real instructor profile.
Estimated domain authority DA ~70FreeModerateVerified live - 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, conditional - SubmitMoodleNet (opens in a new tab)
MoodleNet
moodle.netShare your openly licensed digital-safety lesson pack or Moodle activity and curate it into an educator-focused collection.
Estimated domain authority DA ~65FreeModerateVerified live - 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, conditional - SubmitODI Open Data Certificates (opens in a new tab)
ODI Open Data Certificates
certificates.theodi.orgPublish a machine-readable privacy, accessibility, or scam-pattern dataset or API and complete its evidence-based public certificate.
Estimated domain authority DA ~55FreeModerateVerified live - SubmitOPA Ecosystem (opens in a new tab)
OPA Ecosystem
openpolicyagent.orgBuild a functional OPA/Rego privacy-policy integration or developer tool, document it, then add its ecosystem entry and logo through the official docs repository.
Estimated domain authority DA ~60FreeModerateVerified live - SubmitOpen Textbook Library (opens in a new tab)
Open Textbook Library
open.umn.eduSubmit a complete, openly licensed privacy/digital-safety textbook already used in higher education.
Estimated domain authority DA ~85FreeModerateVerified live - SubmitOpenLearn Create (opens in a new tab)
OpenLearn Create
open.eduPublish a free mini-course on privacy, redaction, scam detection, or accessibility with genuine your tool exercises in the curriculum.
Estimated domain authority DA ~90FreeModerateVerified live - SubmitPayhip (opens in a new tab)
Payhip
payhip.comPublish a genuinely useful free privacy checklist, redaction template, or safety workbook that complements your tool and has standalone value.
Estimated domain authority DA ~75FreeModerateVerified live - 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, conditional - 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, conditional - SubmitScalar (opens in a new tab)
Scalar
scalar.usc.eduPublish a coherent multimedia field guide on privacy, scam evidence, or accessible documents with cited your tool demonstrations.
Estimated domain authority DA ~50FreeModerateVerified live - SubmitSnakemake Workflow Catalog (opens in a new tab)
Snakemake Workflow Catalog
snakemake.github.ioPublish a public reproducible privacy-safe research workflow with a Snakefile, README, configuration, catalog metadata, and tests.
Estimated domain authority DA ~50FreeModerateVerified live - 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, 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.