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A maintained list of 1,854 legitimate backlink sites: directories, profile creation sites, guest posting sites, launch platforms, registries and marketplaces. 1,532 are free or have a free tier, 44 usually give a dofollow link, and 772 have an estimated DA of 70 or more. Every row shows authority, link type, cost and effort, and links straight to the submit page.
Publish your open Privacy Framework mapping, template, tutorial, or implementation tool and submit it for repository review.
Import public your tool developer documentation, add the build config and expose versioned, searchable docs with canonical project links.
Publish a real .NET library or CLI package with ProjectUrl, readme, repository and license metadata.
Publish your stable module or script with ProjectURI, LicenseURI, tags, help and examples.
Publish your Dart package with homepage, repository, issue tracker, documentation and a complete readme.
Create and maintain a PKGBUILD for your installable Linux release with the upstream URL and correct source checksums.
Package your genuine Windows desktop or CLI release and set project, documentation and package-source URLs.
Publish your tested public orb for privacy, secret, or document-safety checks with a homepage URL and usage examples.
Submit a useful R package with URL and BugReports metadata pointing to its official project and documentation pages.
Create a functional Drupal integration or reusable module and publish a maintained project page with documentation and official links.
Tag and publish a public Go module with module docs and repository metadata so pkg.go.dev indexes it.
Publish a maintained Elixir client or utility with package links, description, license and documentation.
Submit an open-source CLI formula or a qualifying macOS app cask with your canonical homepage.
Create and test a Portfile for your open-source CLI or desktop app, including its canonical homepage.
Release a useful Java or Kotlin SDK and include the project homepage, source control, license and developer metadata in the POM.
Add and test a Nix expression for your genuine release with description, homepage, license and maintainer metadata.
Publish your small local-first classifier for privacy, secret detection, or defensive content analysis.
Create a public OBS project and package that builds your tool for supported Linux distributions with upstream links.
Package your legitimate Ruby client or utility and add homepage and source metadata before pushing the gem.
Build and upload a real conda package with homepage, documentation, source and license metadata.
Publish a genuine Perl module or CLI through PAUSE with project URLs and clear distribution documentation.
Release a useful Haskell library or command-line client with homepage, source and bug-report metadata.
Create a truthful scholarly profile and deposit an original privacy, accessibility, or digital-humanities paper or teaching resource with its related your tool URL.
Package your stable CLI or self-hosted helper as a tested APKBUILD, add it under Alpine testing and submit an aports merge request with accurate project metadata.
Create a COPR project, build maintained RPMs and add your official homepage and package documentation.
Submit a validated manifest for an installable Windows release with PackageUrl, PublisherUrl and support metadata.
Prepare and test a policy-compliant ebuild for your stable CLI, including accurate HOMEPAGE and source metadata, then work with a Gentoo developer or proxy maintainer for repository inclusion.
Create a policy-compliant Debian package for your stable useful CLI, file the appropriate intent-to-package request, include accurate upstream metadata and secure a Debian sponsor for upload.
Create and thoroughly test a FreeBSD port for your stable CLI or desktop utility, include its canonical project website in WWW metadata and submit the patch through FreeBSD Bugzilla.
Package your stable cross-platform CLI for pkgsrc, test it with pkglint and supported builds, include the canonical homepage, then submit via pkgsrc-wip or NetBSD's package bug tracker.
Build your OpenWrt-compatible service or utility for a real router/privacy/security workflow, add correct package metadata and tests, then submit it to the official feed.
Four steps that work for a new site, a SaaS or a side project. No paid link packages, nothing that risks a penalty.
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.
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.
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.
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
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.
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.