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 | 94 | Gartner Peer Insights | 90 | Nofollow | gartner.com | Marketplaces and app stores | Not stated | Moderate | Do first | Verified live | Create a vendor portal account and request your tool under the closest eligible Gartner market category. | Gartner checks market alignment before listing; reviews must come from authenticated real users and must never be fabricated or incentivized improperly. | 2026-08-03 • https://gpivendorresources.gartner.com/en/articles/8212705-getting-listed-on-peer-insights | Open Gartner Peer Insights submit page (new tab)Gartner Peer Insights details |
| 2 | 82 | Kit | 75 | Nofollow | kit.com | Publishing platforms | Not stated | Quick | High | Verified live | Create a public Tool Trust Notes newsletter site with original privacy, accessibility, founder, and engineering field reports, using your tool links only where they directly support each issue. | The free plan enables one Kit-managed recommendation slot and Kit keeps earnings from that slot; paid upgrades remove limitations. Use only consented subscribers, disclose commercial relationships, and avoid recycled SEO or promotional-only issues. | 2026-08-03 | Open Kit submit page (new tab)Kit details |
| 3 | 80 | Databricks Marketplace | 85 | Nofollow | databricks.com | Marketplaces and app stores | Not stated | Moderate | High | Verified live | Publish an your tool privacy-checking notebook, synthetic benchmark, AI model, app, or defensive MCP server. | Requires Unity Catalog, Marketplace admin role, provider-policy acceptance, and partner approval for public listings. | Official Databricks Marketplace provider documentation checked 2026-08-07 | Open Databricks Marketplace submit page (new tab)Databricks Marketplace details |
| 4 | 64 | Bugcrowd Public Programs | 80 | Nofollow | bugcrowd.com | Other opportunities | Not stated | Quick | Medium | Verified live | Launch a properly scoped your tool vulnerability disclosure or public bug-bounty program. | Launch only after security hardening, legal safe-harbor rules, response SLAs, triage ownership, and budget are ready. | Official Bugcrowd program FAQ checked 2026-08-07 | Open Bugcrowd Public Programs submit page (new tab)Bugcrowd Public Programs details |
| 5 | 64 | DigitalOcean Marketplace | 90 | Nofollow | digitalocean.com | Marketplaces and app stores | Not stated | Quick | Medium | Verified live | Join the vendor program and package your tool as a legitimate one-click app or supported SaaS add-on with documentation and website links. | Must be deployable, production-ready and maintained; image, Kubernetes or SaaS requirements depend on listing type. | Official DigitalOcean docs verified 2026-07-13 and checked 2026-07-30 | Open DigitalOcean Marketplace submit page (new tab)DigitalOcean Marketplace details |
| 6 | 64 | HackerOne Bug Bounty Platform | 85 | Nofollow | hackerone.com | Communities and forums | Not stated | Quick | Medium | Not submitted | After security readiness, launch a properly scoped public VDP or bounty program with safe-harbor language, assets, response SLAs and funded rewards where applicable. | This is a security program, not an SEO tactic; requires mature triage and remediation, and public profile links may be nofollow or otherwise platform-controlled. | 2026-08-03 | Open HackerOne Bug Bounty Platform submit page (new tab)HackerOne Bug Bounty Platform details |
| 7 | 62 | Automation Anywhere Agentic App Store | 80 | Nofollow | automationanywhere.com | Marketplaces and app stores | Not stated | Moderate | Medium | Verified live | Build an Automation 360 bot or package for an your tool document, privacy, or evidence workflow and submit dependencies plus a working demonstration. | Requires the publisher role, public workspace assets, complete dependencies, unique functional content, a submission form, and review. | Official Automation Anywhere Bot Store submission documentation checked 2026-08-07 | Open Automation Anywhere Agentic App Store submit page (new tab)Automation Anywhere Agentic App Store details |
| 8 | 62 | Heroku Elements Marketplace | 90 | Nofollow | elements.heroku.com | Marketplaces and app stores | Not stated | Moderate | Medium | Verified live | Build a real Heroku add-on or qualifying open-source buildpack and progress it through the partner release stages. | Add-ons need HTTPS and JSON integration, testing, support and alpha-to-beta review; promotional-only entries do not qualify. | Official Heroku docs and live Elements catalog checked 2026-07-30 | Open Heroku Elements Marketplace submit page (new tab)Heroku Elements Marketplace details |
| 9 | 62 | IBM Cloud Catalog | 95 | Nofollow | ibm.com | Other opportunities | Not stated | Moderate | Medium | Verified live | Package a deployable self-hosted your tool architecture for IBM Cloud, complete Partner Center onboarding, and request public catalog approval. | A working deployable architecture, complete onboarding checklist, testing, approval, ongoing maintenance, and deprecation management are required. | Official IBM Cloud catalog publishing documentation checked 2026-08-07 | Open IBM Cloud Catalog submit page (new tab)IBM Cloud Catalog details |
| 10 | 59 | Prezly | 65 | Nofollow | prezly.com | PR and source platforms | Not stated | Involved | Medium | Verified live | Build a branded your tool newsroom, publish media-ready stories, and send targeted pitches to opted-in contacts. | A hosted newsroom is owned media, not earned coverage; comply with outreach and privacy rules and avoid mass pitching. | https://www.prezly.com/pricing | Open Prezly submit page (new tab)Prezly details |
| 11 | 44 | AppSumo Partners | 80 | Nofollow | appsumo.com | Marketplaces and app stores | Not stated | Quick | Later | Needs checking | Pitch lifetime/free deal if your tool has paid tier later. | Only if monetization/deal exists. | 2026-07-30 | Open AppSumo Partners submit page (new tab)AppSumo Partners details |
| 12 | 42 | Dailymotion | 95 | Nofollow | dailymotion.com | Profiles and entities | Not stated | Moderate | Later | Live, conditional | Publish genuine demo videos and add your tool to the approved creator profile website field. | Paid and approval-dependent; standard users cannot add website links. | 2026-08-03 | Open Dailymotion submit page (new tab)Dailymotion 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.