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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.
Free, one short form, strongest sites first. No paid tier needed.
google.com
github.com
toolhub.wikimedia.org
wordpress.org
flickr.com
patreon.com
Short demos of suspicious/privacy tools.
Build a free one-page site on a Tilda subdomain with real content and a link to your main site.
Submit your AI tool with honest feature and pricing details.
Create a public profile and link your site or security blog.
Submit a concise company profile only if your tool is a genuine UK startup or has a verifiable UK operating entity.
Submit company/startup profile.
Create an infographic or presentation and publish it to the web with a link to your site.
Publish dev utility extension linking your tool docs.
Make a VSCO profile and link your site in the bio.
Enable a public profile and add your website to show your coding stats.
Create a free Webnode site with real content, such as a project page, and link to your main site.
Create official tutorials/mirror with links.
Claim or create your free listing and keep details consistent with other NZ citations.
Claim your tool’s genuine operating location only if the business is eligible, then add accurate website and contact information.
Set up a free Yola site and publish a few useful pages that link back to your site.
Build Zapier integration if your tool exposes API/workflows.
Submit agent-related tool if fit.
Submit agent-related tools if your tool adds agents.
Submit only if agent-related feature exists.
Submit AI agent/framework listing if fit.
Submit agent-related tool if fit.
Submit agent-related feature if fit.
Submit AI privacy/safety tool listing.
Submit marketing/productivity AI tool.
Submit AI tool/deal if available.
Submit AI tools if submission open.
Submit/claim AI tool listing.
Pitch lifetime/free deal if your tool has paid tier later.
Submit only if your tool has Claude/MCP-related resource.
Claim/request listing if eligible.
Submit only agent-related your tool feature.
Build your maintained Kong integration or plugin, then pursue the technology-partner path for possible Plugin Hub inclusion.
Submit your tool productivity/AI utilities.
Study accepted multi-tool positioning; possible outreach/partnership.
Submit product-launch press release if newsworthy.
If you target China, submit your project through their startup coverage request with Chinese-language materials.
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.