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
Highest impactimpact 100
- SubmitGlama MCP Directory (opens in a new tab)
Glama MCP Directory
glama.aiDeploy your maintained MCP server from GitHub, Docker, npm, or PyPI, verify maintainer ownership, and switch it public only after production testing.
Estimated domain authority DA ~50FreeQuickNot submitted - SubmitMERLOT (opens in a new tab)
MERLOT
merlot.orgPublish a genuinely reusable privacy or accessibility lesson on your tool, give it a stable URL and open license, then add its educational metadata to MERLOT.
Estimated domain authority DA ~70FreeQuickVerified live
High impactimpact 86
- 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
Usefulimpact 68
- 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
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.