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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.
Build a genuine CWL validator, security tool, or implementation and propose its inclusion with compliance evidence.
Create a real developer profile, publish your original engineering tutorial or project, and join only relevant privacy or developer communities.
Build a functional Contao bundle for your site-audit use case, publish tagged releases on Packagist with contao-bundle and manager-plugin metadata, and let the official index discover it.
Publish a genuine Perl module or CLI through PAUSE with project URLs and clear distribution documentation.
Submit relevant your tool utilities under AI, web, or developer categories.
Share Cursor rules or list your MCP server, linking back to your project.
Submit your site if it has a polished dark design.
Build a genuine free challenge solution, publish the deployed project and repository, and use the finished privacy or accessibility implementation as a portfolio case study.
Enter a relevant live hackathon with your working project, complete its story and demo, and include the project website where allowed.
After releasing a genuinely Django-relevant open-source component, sign in and add its GitHub or GitLab repository and accurate project links.
Build an ESP-IDF privacy, credential-safety, secure-logging, or local-processing component, add manifest, license, docs, examples, and publish it through the registry workflow.
List your registered business as an eligible IT supplier and complete its public company profile and website field.
Publish a privacy-respecting open-source Android companion app, then file a packaging request or merge request.
Create startup profile and link website.
Use atlas to find more open-form launch sites and request listing if available.
Publish your genuine versioned Nix flake under the correct GitHub owner and maintain its README and project links.
Create your truthful /founder profile or content page and add the website link where allowed.
Build and publish a real fluent-plugin-* RubyGem that redacts/routes privacy-sensitive logs and includes your tool as its project homepage.
Submit your real maintained open-source release with accurate categories and project metadata.
Create software vendor listing.
Create a founder/developer portfolio, pin your tool repository/project and add the official website link.
Post how to embed your tool calculators in Ghost after /embed live.
Mirror open-source embed SDK or examples with homepage link.
Create your truthful /founder profile or content page and add the website link where allowed.
Create business profile only if eligible with real business details.
Create brand/founder profile with verified links.
Release a useful Haskell library or command-line client with homepage, source and bug-report metadata.
Release a useful Haxe SDK or privacy utility and set haxelib.json's URL to your relevant documentation page.
Add your remote-friendly company with a description, tech stack and website.
Create your truthful /founder profile or content page and add the website link where allowed.
Apply with a privacy/digital-safety education program that demonstrates real K-12 impact and scalability.
Publish a genuine browser or desktop your tool utility with screenshots, documentation and an official-site link.
Build a functional Jellyfin privacy, metadata-cleanup, or local-safety plugin with a maintained manifest repository, then propose its repository and documentation entry.
Build your functional Joomla integration and submit a complete listing with an approved download route.
Create a truthful scholarly profile and deposit an original privacy, accessibility, or digital-humanities paper or teaching resource with its related your tool URL.
Create your project team, connect verified project accounts, and describe the official website and repository contextually.
Choose the free listing or purchase your dedicated product page.
Create a useful Lua client or helper, publish its rockspec and include homepage, license and source links.
Claim or add your legal business, complete its description and logo, and include the verified website link.
Create your working public integration or reusable Mastra template with repository and documentation for review and cross-listing.
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.