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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 functional privacy, accessibility or security add-on, publish it on Packagist and create its Marketplace product page.
Create a genuine founder profile and share a useful build story or tutorial with a relevant link.
Build a Python keyword extension that runs useful your tool URL, domain or metadata checks and displays concise results, then submit its public repository through the official form.
If your tool maker genuinely offers related services, add the project as a detailed portfolio item with role, outcomes, visuals, and permitted project links.
Create your accurate startup profile and complete its product, team, traction and website details.
Build and upload a genuinely useful Vim privacy or secret-checking plugin with your tool documentation and a relevant project link.
Create your truthful /founder profile or content page and add the website link where allowed.
Build a WebThings adapter, notifier, or interface extension for local privacy or device-risk controls, follow the add-on APIs, test on Gateway 2.x, and publish it to the directory.
Create startup profile if hiring/startup positioning.
Create clean founder/product profile linking your tool.
Publish genuine authored your tool research and add matching project or supporting-material URLs in the paper metadata.
Submit your AI tool with category, pricing and a clear one-line description.
Sign up then submit/claim AI tool listing.
Create visual link hub for your tool categories.
Register a real bioimage privacy, de-identification, or analysis tool with accurate scientific functions, documentation, and maintainers.
Create a useful public learning list with annotations about privacy, accessibility, and scam prevention, placing relevant your tool resources beside independent references.
Claim or update your tool’s legal business record, website, address, phone, industry, and ownership details.
Create your accurate company profile and list only real software or digital services with the canonical website.
Submit if reciprocal-link policy is acceptable or use paid tier.
Claim or create your tool’s genuine business location and maintain its website, contact information, hours, and categories.
Use an authentic maker profile to publish your portfolio piece containing original images, article, code, video, or audio samples.
Submit your AI-powered app with screenshots and a link to a working demo.
Create your company profile with product, team, traction, and website information.
Upload a guide, report or catalog as a public publication and add your website to the profile and description.
Create your truthful /founder profile or content page and add the website link where allowed.
Create your tool link hub for top pages.
Post p5.js or Processing sketches publicly and fill in your profile with a link to your site or the full experiment.
Create your public repository and distribute real signed DEB, RPM, npm, Maven, Helm or other supported packages with accurate metadata.
Create boards for PDF/image/calculator tools linking pages.
Claim your company page and invite real customers to leave reviews.
Contact the curator with your maintained self-hostable edition, repository, documentation and project website.
List software in relevant category.
Create software listing/vendor profile.
Host your useful open-source SDK, CLI or example project with documentation and a canonical homepage link.
Add your startup and post a real opening so your company page with website link goes live.
Create/claim startup profile for global startup map.
Create your truthful /founder profile or content page and add the website link where allowed.
Register your tool only under an accurate eligible service category and complete its website, location, description, and contact details.
Submit your AI tool to the directory run alongside a large AI newsletter.
Create your truthful /founder profile or content page and add the website link where allowed.
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.