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 | 100 | CSA STAR Registry | 80 | Sometimes dofollow | cloudsecurityalliance.org | Developer registries | Free | Quick | Do first | Live, conditional | Complete the current CAIQ or AI-CAIQ truthfully and submit your tool real cloud service to the STAR Registry. | Cloud/SaaS fit only; disclose actual controls and update annually. Never overstate security practices. | 2026-08-04 | Open CSA STAR Registry submit page (new tab)CSA STAR Registry details |
| 2 | 68 | API Tracker | 45 | Sometimes dofollow | apitracker.io | Developer registries | Free | Quick | Medium | Needs checking | Submit your public API with docs link, SDKs and authentication details. | Only products with public APIs fit. | Added 2026-11-01 | Open API Tracker submit page (new tab)API Tracker details |
| 3 | 68 | Best of JS | 55 | Sometimes dofollow | bestofjs.org | Developer registries | Free | Quick | Medium | Needs checking | Suggest your JavaScript or TypeScript project through their GitHub issue process. | Projects need some traction and must be JS ecosystem tools. | Added 2026-11-01 | Open Best of JS submit page (new tab)Best of JS details |
| 4 | 48 | 21st.dev | 45 | Sometimes dofollow | 21st.dev | Developer registries | Free | Quick | Later | Needs checking | Publish React UI components and link your site from your author profile. | Components must be original and working. | Added 2026-11-01 | Open 21st.dev submit page (new tab)21st.dev details |
| 5 | 48 | Android Arsenal | 55 | Sometimes dofollow | android-arsenal.com | Developer registries | Free | Quick | Later | Needs checking | Submit your open-source Android library with its repository link. | Only Android libraries and tools are accepted. | Added 2026-11-01 | Open Android Arsenal submit page (new tab)Android Arsenal details |
| 6 | 48 | CodeTriage | 55 | Sometimes dofollow | codetriage.com | Developer registries | Free | Quick | Later | Needs checking | Add your repository so contributors can subscribe to help triage its issues. | Repo must be public on GitHub. | Added 2026-11-01 | Open CodeTriage submit page (new tab)CodeTriage details |
| 7 | 48 | Dotfyle | 40 | Sometimes dofollow | dotfyle.com | Developer registries | Free | Quick | Later | Needs checking | Add your Neovim plugin or config so it appears in their searchable directory. | Must be a real Neovim plugin hosted publicly. | Added 2026-11-01 | Open Dotfyle submit page (new tab)Dotfyle details |
| 8 | 48 | Flutter Gems | 45 | Sometimes dofollow | fluttergems.dev | Developer registries | Free | Quick | Later | Needs checking | Suggest your Flutter package so it is categorised in their curated catalog. | Packages must be on pub.dev and maintained. | Added 2026-11-01 | Open Flutter Gems submit page (new tab)Flutter Gems details |
| 9 | 48 | Free Public APIs | 35 | Sometimes dofollow | freepublicapis.com | Developer registries | Free | Quick | Later | Needs checking | Submit your free API with a description and documentation link. | APIs are tested and must be free to use. | Added 2026-11-01 | Open Free Public APIs submit page (new tab)Free Public APIs details |
| 10 | 48 | Good First Issue | 50 | Sometimes dofollow | goodfirstissue.dev | Developer registries | Free | Quick | Later | Needs checking | Add your open-source repo via pull request so beginners find your labelled issues. | Repo needs active good-first-issue labels and some stars. | Added 2026-11-01 | Open Good First Issue submit page (new tab)Good First Issue details |
| 11 | 48 | Jamstack Themes | 45 | Sometimes dofollow | jamstackthemes.dev | Developer registries | Free | Quick | Later | Needs checking | Submit your open-source starter or theme for a static site generator. | Theme must be on GitHub with a working demo. | Added 2026-11-01 | Open Jamstack Themes submit page (new tab)Jamstack Themes details |
| 12 | 48 | Made with Svelte | 45 | Sometimes dofollow | madewithsvelte.com | Developer registries | Free | Quick | Later | Needs checking | Submit a site, app or component built with Svelte. | Must actually use Svelte; reviewed before publishing. | Added 2026-11-01 | Open Made with Svelte submit page (new tab)Made with Svelte details |
| 13 | 48 | React Native Directory | 55 | Sometimes dofollow | reactnative.directory | Developer registries | Free | Quick | Later | Needs checking | Add your React Native library through a pull request to their GitHub repo. | Library must be on npm with a public repository. | Added 2026-11-01 | Open React Native Directory submit page (new tab)React Native Directory details |
| 14 | 48 | Up For Grabs | 55 | Sometimes dofollow | up-for-grabs.net | Developer registries | Free | Quick | Later | Needs checking | Add a project file to their GitHub repo pointing at your beginner-friendly issue label. | Projects with no open labelled issues are pruned. | Added 2026-11-01 | Open Up For Grabs submit page (new tab)Up For Grabs details |
| 15 | 46 | Awesome Go | 55 | Sometimes dofollow | awesome-go.com | Developer registries | Free | Moderate | Later | Needs checking | Open a pull request to the awesome-go list with your Go library. | Requires tests, docs, a license and reasonable coverage. | Added 2026-11-01 | Open Awesome Go submit page (new tab)Awesome Go details |
| 16 | 46 | Hugo Themes | 65 | Sometimes dofollow | themes.gohugo.io | Developer registries | Free | Moderate | Later | Needs checking | Add your Hugo theme following the theme repository submission steps. | Theme needs a README, screenshots and an open license. | Added 2026-11-01 | Open Hugo Themes submit page (new tab)Hugo Themes details |
| 17 | 46 | Jamstack.org | 65 | Sometimes dofollow | jamstack.org | Developer registries | Free | Moderate | Later | Needs checking | Add your static site generator or headless CMS through a pull request to their GitHub repo. | Only fitting tool categories are accepted. | Added 2026-11-01 | Open Jamstack.org submit page (new tab)Jamstack.org details |
| 18 | 46 | Nuxt Modules | 70 | Sometimes dofollow | nuxt.com | Developer registries | Free | Moderate | Later | Needs checking | Open a pull request to the Nuxt modules repository to list your module. | Module must be maintained and documented. | Added 2026-11-01 | Open Nuxt Modules submit page (new tab)Nuxt Modules 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.