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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.
Convert your original guide into a public flipbook and add useful external-resource hotspots where relevant.
Build a small free site on a SITE123 subdomain with useful content and a link to your main site.
Create your tool updates newsletter with homepage link.
Upload a static page, demo or PDF and share it on a tiiny.site subdomain with a link to your site.
Build a free one-page site on a Tilda subdomain with real content and a link to your main site.
Create an infographic or presentation and publish it to the web with a link to your site.
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.
Set up a free Yola site and publish a few useful pages that link back to your site.
Host a podcast on the free tier and link to your site from the show page and episode notes.
Upload your original useful guide, complete its metadata and include relevant citations or resource links.
Create a public documentation space for your product and link it from and to your main site.
Share useful small-business/tool article.
Upload your OpenAPI or AsyncAPI spec to host public API docs with a changelog and link to your site.
Deploy a static docs, demo or changelog site to a pages.dev subdomain and link it to your product.
Publish a chart from your own data and add your site as the source link.
Publish a useful ebook through Draft2Digital to major stores and include your website in the book and author page.
Publish an interactive chart or story from your own data and credit your site in the source note.
Run your genuine privacy/security publication and add contextual links in original posts and About pages.
Share growth/SEO/tool story with useful details.
Create a chart or infographic from your data and share it publicly with a source link to your site.
Pitch only major developer/security story.
Publish an ebook through Kobo's self-publishing service and mention your website in the book.
Send a short note about a genuinely delightful web project; the editor links to things that catch his interest.
Publish a print or ebook guide on Lulu and add your website to the book description and author profile.
Use the free plan to publish a public newsletter archive or landing page that links to your site.
Create a free static site you code yourself, add genuine content, and link to your projects.
Start a free newsletter or blog and publish useful posts that link to your site.
Publish your OpenAPI reference docs with Redocly and link back to your product and signup.
Deploy a free static docs or demo site from a Git repository and link it to your project.
Host your podcast and add your website to show notes and the podcast profile page.
Upload an unpublished evaluation study or research poster about your privacy or accessibility method with supporting code and data.
Create a genuine audio profile, add the website link and publish useful demo or education tracks.
Publish an original tool/privacy show and place contextual your tool links in HTTPS show notes.
Design your API and publish public docs with a link to your product.
Publish a static demo or docs site from the command line and link to your main project.
Publish your OpenAPI definition publicly on SwaggerHub with a link to your product docs.
Write or improve a how-to article where you have real expertise, and cite sources properly.
Publish/pitch dev-tool article if accepted.
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.