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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.
Upload your Android app through their developer console.
If your game is built with Construct, publish it to the Construct Arcade from your account so it gets a public game page.
Build table functions that import, normalize and query your tool report JSON or NDJSON with typed findings, then submit the extension descriptor for central build and distribution.
Publish design asset or privacy checklist template.
Build a maintained OctoPrint plugin for your credible -related workflow such as privacy-safe print logs or metadata checks, then register it through the official repository pull request.
Implement a genuine OpenFeature provider, hook or integration around your configuration or audit-health use case, publish it and add it to the ecosystem documentation.
Sign in with a Y8 account and upload your HTML5 or WebGL game; the game page shows your developer profile.
Build a production-grade Camel component for your tool APIs and propose it upstream with generated component docs and tests.
Submit a polished web game through their developer route; published games carry a developer credit on the game page.
Only submit if you build a Bubble-related app/template.
Build a Cytoscape 3 app for a genuine graph privacy, provenance or network-audit workflow, provide website/source metadata and submit its first release for administrator approval.
Become a contributor and upload vectors, photos or templates.
Build a tested Galaxy wrapper for your medical-data privacy or de-identification workflow and publish it in the main ToolShed.
Create a developer account, upload your HTML5 game and let it be syndicated to partner game sites, with your studio named on the listing.
Create a genuine media-metadata privacy or local-safety add-on and submit it to Kodi's official repository.
Build a WASI/LSP Volt that surfaces useful your tool diagnostics for HTML or SEO configuration files, then publish it with the official Volts CLI.
Create a Lua plugin with real commands for your tool URL audits or JSON validation and add a conforming manifest entry to the official Lite XL plugin repository.
Build a real openHAB add-on that integrates your home-network privacy or safety service, provide addon.xml, tests and documentation, then submit it upstream.
Sell well-tested prompts and link your site from your seller profile.
Build and test a legitimate QIIME 2 plugin for a microbiome-data privacy, validation or provenance use case, then distribute it through the QIIME 2 Library.
Apply as a creator, upload icon sets and link your website in your profile.
Build Make app/integration for workflows.
Post useful no-code tutorial/resource.
Publish dev utility extension linking your tool docs.
Build Zapier integration if your tool exposes API/workflows.
Pitch lifetime/free deal if your tool has paid tier later.
Build your maintained Kong integration or plugin, then pursue the technology-partner path for possible Plugin Hub inclusion.
List your startup for sale or acquisition interest with verified metrics.
If you build a Mailchimp integration, apply to have it listed in their directory.
Publish Edge version of extension.
Open a store for your hardware project and link your site in the store profile.
Set up a store for software, communities or digital products and link your site.
Pitch tutorial/resource if your tool helps no-code makers.
Submit your tool if no-code resource/tool fit.
Develop a maintained Zabbix template/integration for your tool and apply for Integration Partner review and Marketplace visibility.
Become an author and sell scripts or plugins, linking your site from your profile.
Sell game, 3D or Unreal assets as a seller and link your studio site.
Join as a vendor and sell templates or plugins with a vendor profile.
Sell website themes or templates as an author with a profile link to your site.
Apply as an author to sell UI kits or design resources.
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.