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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.
The table is wider than the screen — swipe it sideways for cost, effort and the preparation notes.
| # | Impact (sorted) | Site — sort by this | Est. DA — sort by this | Link | Domain | Type | Cost | Effort — sort by this | Priority | Status | What to prepare | Rules / caveat | Checked | Actions |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 98 | Postman Public API Network | 90 | Nofollow | postman.com | Design galleries | Free | Moderate | Do first | Verified live | Publish a well-documented public your tool API workspace with runnable collections, examples and the canonical API website. | Only suitable for a genuine public API; remove secrets and personal data and keep collections accurate. | Official Postman API Network docs checked 2026-07-30 | Open Postman Public API Network submit page (new tab)Postman Public API Network details |
| 2 | 68 | Upwork | 95 | Nofollow | upwork.com | Design galleries | Free | Quick | Medium | Live, conditional | If your tool maker genuinely offers related services, add the project as a detailed portfolio item with role, outcomes, visuals, and permitted project links. | Use only an authentic accepted freelancer profile; no contact details or brand-only backlink account, and follow portfolio link rules. | Official Upwork profile and portfolio guidance checked 2026-08-07 | Open Upwork submit page (new tab)Upwork details |
| 3 | 65 | Freelancer.com | 90 | Nofollow | freelancer.com | Design galleries | Free + paid tier | Quick | Medium | Live, conditional | Use an authentic maker profile to publish an your tool portfolio piece containing original images, article, code, video, or audio samples. | Use only when the person genuinely offers services; publish owned work and avoid profile keyword stuffing. | Official Freelancer.com portfolio and profile guidance checked 2026-08-07 | Open Freelancer.com submit page (new tab)Freelancer.com details |
| 4 | 48 | DeviantArt | 95 | Nofollow | deviantart.com | Design galleries | Free | Quick | Later | Live, conditional | Publish original your tool UI/illustration work, then add the official website in the profile bio. | Only use for genuine visual work or design process content; generic product promotion is inappropriate. | 2026-08-03 | Open DeviantArt submit page (new tab)DeviantArt details |
| 5 | 46 | Made in Webflow | 90 | Nofollow | webflow.com | Design galleries | Free | Moderate | Later | Needs checking | Submit only if your tool page/template is built in Webflow. | Not fit for current Next.js site unless Webflow asset. | 2026-07-30 | Open Made in Webflow submit page (new tab)Made in Webflow details |
| 6 | 45 | Dribbble | 90 | Nofollow | dribbble.com | Design galleries | Free + paid tier | Quick | Later | Not submitted | Share selected UI shots/tool pages with profile link. | Needs quality visuals; no spam shots. | 2026-07-30 | Open Dribbble submit page (new tab)Dribbble details |
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.