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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.
Only submit if you build a Bubble-related app/template.
Host a static site for a free or open-source project from a Codeberg repository.
Open a designer profile and upload free or paid 3D models.
Register and apply to become an author, then publish articles on customer experience, CRM or service.
Create an account and submit an article on big data, AI or emerging technology for editorial review.
Submit a design or architecture project through their DIY submission tool with images and text.
Share design/tool launch if genuinely useful.
Help Windows 11 users and keep your site on your profile.
Publish an Elm package with docs and a repository link.
Apply to write for the publication and submit startup or founder lessons through Medium.
Register as a member and publish blog posts on fintech, payments or banking technology.
Create a seller profile and gigs that describe services you really offer.
Document a project that uses notable typography and credit your site or studio.
Become a contributor and upload vectors, photos or templates.
Create an account and publish a member blog on game development, tools or postmortems.
Make a creator profile and publish your game with links to your site.
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 brand or artist channel, upload GIFs and apply for verification.
Create an account, add a profile link and optionally mirror an open-source repo.
Deploy a static docs or project site from a GitLab repository and link to your main site.
Create a Hive account and publish posts in relevant communities, linking to your own content where useful.
Add your Hugo theme following the theme repository submission steps.
Add your indie game, post updates and link your studio site.
Send creative work for possible editorial coverage.
Add your static site generator or headless CMS through a pull request to their GitHub repo.
Join the partner program to syndicate your existing Java or software development posts, or submit original articles.
Write a Chinese-language technical post about your tool or open-source project.
Submit your tool for startup feature/review.
Join relevant communities and share your project only where self-posts are allowed.
Authors can join the author program to get a linked author page.
Join the community, answer questions and add your site to your profile.
Submit your Windows app for review and malware testing.
Publish your MCP server or agent to their marketplace with docs and a repository link.
Submit only if your tool page/template is built in Webflow.
Create a community account and submit an article or short insight on software testing for review.
Publish an article with a wallet login and link back to your site in context.
Send release notes for notable versions of your desktop software to their software news section.
Post your own games, animation or music and add your site to your profile.
Open a pull request to the Nuxt modules repository to list your module.
Make a channel and link your website in the about section and video descriptions.
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.