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A maintained list of 1,432 directories, launch platforms, registries and marketplaces that accept product submissions. 1,134 of them are free or have a free tier, and 192 are quick wins — free, low effort, and worth doing first. Every row shows cost, effort and priority, and links straight to the submission page.
The table is wider than the screen — swipe it sideways for cost, effort and the preparation notes.
| # | Impact (sorted) | Site — sort by this | Domain | Type | Cost | Effort — sort by this | Priority | Status | What to prepare | Rules / caveat | Checked | Actions |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 601 | 43 | NavTools AI | navtools.ai | AI tool directories | Free + paid tier | Moderate | Later | Verified live | Submit your tool AI utilities and choose free review or paid placement. | Free review may take 30–90 days; all submissions are manually checked. | https://navtools.ai/submit | Open NavTools AI submit page (new tab)NavTools AI details |
| 602 | 43 | Nextdoor Business | nextdoor.com | Business directories | Free + paid tier | Moderate | Later | Verified live | Create a free page only for a genuine local your tool office or service area and add accurate story, categories, website, and contact data. | Official guidance says pages are for truly local businesses; verification is required for posting and online-only use is a poor fit. | https://business.nextdoor.com/en-us/blog/guide-to-claiming-your-nextdoor-business-page?hs_amp=true | Open Nextdoor Business submit page (new tab)Nextdoor Business details |
| 603 | 43 | NITRC | nitrc.org | Software directories | Free + paid tier | Moderate | Later | Verified live | Register an actual neuroimaging privacy, quality-control, or data-processing tool through NITRC's resource workflow. | Must have substantive neuroimaging or neuroscience relevance; account registration and moderation apply. | Official NITRC project and registered-resource pages checked 2026-08-05 | Open NITRC submit page (new tab)NITRC details |
| 604 | 43 | ProLinkDirectory | prolinkdirectory.com | Business directories | Free + paid tier | Moderate | Later | Verified live | Submit your tool (or its blog/feed where required) under productivity, privacy or developer tools. | Human review may apply; use a natural brand title and avoid keyword stuffing. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/prolinkdirectory | Open ProLinkDirectory submit page (new tab)ProLinkDirectory details |
| 605 | 43 | Qeios | qeios.com | Review platforms | Free + paid tier | Moderate | Later | Verified live | Post a substantive study of privacy-preserving browser tools or redaction reliability with transparent methods and data. | Research only; promotional content is forbidden, conflicts are public, and DOI versions are permanent. Never buy Pro solely for a link. | 2026-08-05 — https://www.qeios.com/publishing-policy | Open Qeios submit page (new tab)Qeios details |
| 606 | 43 | Reach360 Launch | reach360.app | Launch platforms | Free | Involved | Later | Verified live | Submit your tool as a genuine indie product and complete the requested launch information. | Small experimental platform; sign-in and editorial/ranking outcomes apply. | 2026-08-05 official submit page | Open Reach360 Launch submit page (new tab)Reach360 Launch details |
| 607 | 43 | ScienceOpen Preprints | scienceopen.com | Publishing platforms | Free + paid tier | Moderate | Later | Verified live | Upload an unpublished evaluation study or research poster about an your tool privacy or accessibility method with supporting code and data. | Requires ORCID, integrity screening, complete authorship, one scholarly PDF, and CC BY licensing; records are permanent. | 2026-08-05 — https://www.scienceopen.com/collection/5916e67c-0edf-472a-ad8e-6e205a4e080d | Open ScienceOpen Preprints submit page (new tab)ScienceOpen Preprints details |
| 608 | 43 | SitePromotionDirectory | sitepromotiondirectory.com | Business directories | Free + paid tier | Moderate | Later | Verified live | Submit your tool (or its blog/feed where required) under productivity, privacy or developer tools. | Human review may apply; use a natural brand title and avoid keyword stuffing. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/sitepromotiondirectory | Open SitePromotionDirectory submit page (new tab)SitePromotionDirectory details |
| 609 | 43 | Solid Applications | solidproject.org | Other opportunities | Free | Involved | Later | Verified live | Build a genuine Solid privacy utility that lets users choose identity providers and stores or retrieves their data from Solid Pods, then confirm the current listing handoff with maintainers. | Must be a functioning Solid app; eligibility is published, but the exact current editorial submission workflow should be reconfirmed first. | Official Solid applications criteria checked 2026-08-05 | Open Solid Applications submit page (new tab)Solid Applications details |
| 610 | 43 | Startin.LV Startup Database | startin.lv | Startup directories | Free + paid tier | Moderate | Later | Verified live | Apply only if the operating company is genuinely incorporated in Latvia and fits the database's scalable-startup criteria. | Conditional eligibility: Latvia-based incorporation and an innovative, scalable model; entries are manually considered rather than automatically published. | 2026-08-03 • https://startin.lv/startup-database/ | Open Startin.LV Startup Database submit page (new tab)Startin.LV Startup Database details |
| 611 | 43 | startup.ch | startup.ch | Startup directories | Free + paid tier | Moderate | Later | Verified live | Apply for a profile only if your tool is operated by a scalable high-tech startup incorporated and headquartered in Switzerland. | Strict regional eligibility applies; the application requests company and team details and publication remains subject to review. | 2026-08-03 • https://www.startup.ch/index.cfm?page=137908 | Open startup.ch submit page (new tab)startup.ch details |
| 612 | 43 | Taplink | taplink.cc | Profiles and entities | Free + paid tier | Moderate | Later | Verified live | Create one branded Taplink page and add a curated set of your tool product, category and contact links. | Official signup is on taplink.at while public pages use taplink.cc; avoid repetitive link-only pages. | 2026-08-04 | Open Taplink submit page (new tab)Taplink details |
| 613 | 43 | TradeIndia | tradeindia.com | Business directories | Free + paid tier | Moderate | Later | Verified live | List a genuine paid your tool B2B product or service, complete the company profile, and provide accurate seller documentation. | Product, price, phone, company, and verification details are expected; do not use it as a generic SEO listing if the offer is ineligible. | https://www.tradeindia.com/about-us/help/account/registration/ | Open TradeIndia submit page (new tab)TradeIndia details |
| 614 | 43 | Trusted Introducer | trusted-introducer.org | Developer registries | Free + paid tier | Moderate | Later | Verified live | List an operational CSIRT, CERT, SOC, ISAC or PSIRT after securing sponsors and passing the community-vote process. | Operational security team only; typical listing review and vote takes 4–5 weeks. | 2026-08-05 — https://www.trusted-introducer.org/trusted-introducer/processes/listing/ | Open Trusted Introducer submit page (new tab)Trusted Introducer details |
| 615 | 43 | WeekHack | weekhack.com | Launch platforms | Free + paid tier | Moderate | Later | Verified live | Submit a real your tool release to the free weekly launch queue. | Free dofollow only for top three; long queue and one-year relaunch cooldown; avoid paying only for links. | 2026-08-05 official launches submit page | Open WeekHack submit page (new tab)WeekHack details |
| 616 | 42 | Foundation for Public Code | publiccode.net | Other opportunities | Not stated | Moderate | Later | Verified live | If an your tool component is built with or for a public body, publish a standards self-assessment and pursue stewardship/assessment. | Requires reusable, documented public-purpose OSS developed with/for public organizations; certification remains conditional. | 2026-08-05 — https://standard.publiccode.net/README.html | Open Foundation for Public Code submit page (new tab)Foundation for Public Code details |
| 617 | 42 | UpRank | uprank.com | Software directories | Not stated | Moderate | Later | Verified live | Submit your tool for manual inclusion in the software directory. | Manually vetted; acceptance and category fit are discretionary. | https://uprank.com/list-your-business | Open UpRank submit page (new tab)UpRank details |
| 618 | 42 | Zabbix Integration Partners | zabbix.com | Marketplaces and app stores | Not stated | Moderate | Later | Verified live | Develop a maintained Zabbix template/integration for your tool and apply for Integration Partner review and Marketplace visibility. | Official partner path, not a free profile trick; requires a real supported integration, organizational review and an ongoing relationship with Zabbix. | 2026-08-05 — https://www.zabbix.com/partners | Open Zabbix Integration Partners submit page (new tab)Zabbix Integration Partners details |
| 619 | 39 | SaaSKart | saaskart.co | Marketplaces and app stores | Not stated | Involved | Later | Verified live | Consider a verified vendor profile only if the India-focused buyer exposure justifies a recurring listing budget. | There is no free listing; the profile deactivates if the subscription is not renewed, and payment does not justify claiming editorial endorsement. | 2026-08-03 • https://www.saaskart.co/pricing | Open SaaSKart submit page (new tab)SaaSKart details |
| 620 | 38 | AIapps | aiapps.com | AI tool directories | Paid | Quick | Later | Verified live | Consider only after your tool has a substantial AI feature and the directory offers business value beyond a link. | Paid annual listing; cancellation pauses the outbound link; do not buy solely for backlink value. | 2026-08-05 official submit page | Open AIapps submit page (new tab)AIapps details |
| 621 | 38 | EOSC Federation | eosc.eu | Other opportunities | Paid | Quick | Later | Verified live | Onboard an operational research-facing your tool service through an eligible EOSC Node using the Federation Handbook process. | Organization-level service onboarding, not a directory form; maturity, policies, interoperability, support, and Node acceptance are required. | EOSC Federation Handbook checked 2026-08-05 | Open EOSC Federation submit page (new tab)EOSC Federation details |
| 622 | 38 | FIRST | first.org | Other opportunities | Paid | Quick | Later | Verified live | Apply as Associate or full Member only after operating a credible incident-response team/program and completing sponsorship/review. | Full membership requires sponsors and SIM3/site-visit process; associate status needs a valid response mission and contribution value. | 2026-08-05 — https://www.first.org/membership/ | Open FIRST submit page (new tab)FIRST details |
| 623 | 36 | Agentic AI Foundation | aaif.io | Other opportunities | Paid | Moderate | Later | Verified live | Apply only with a meaningful open agent-security or MCP-governance contribution and an ongoing participation plan. | Linux Foundation prerequisites and parent-company headcount rules apply; associate status is restricted and membership is not certification. | 2026-08-05 official Agentic AI Foundation members page | Open Agentic AI Foundation submit page (new tab)Agentic AI Foundation details |
| 624 | 36 | CiviCERT | civicert.org | Other opportunities | Paid | Moderate | Later | Verified live | Apply only after operating a real civil-society digital-security help desk and meeting network operations and vetting requirements. | Adopt vetting/information policies and code of conduct, track cases/share threats, and obtain vouches from two members at different organizations. | 2026-08-05 — https://www.civicert.org/apply-to-be-a-member/ | Open CiviCERT submit page (new tab)CiviCERT details |
| 625 | 36 | Directory of Open Access Books | doabooks.org | Other opportunities | Paid | Moderate | Later | Verified live | Apply only after your tool operates a genuine OA scholarly-book publishing program, then submit peer-reviewed privacy-tech books. | Publisher-level path, not a one-off product listing; transparent peer review, open licences, HTTPS publishing site and scholarly books required. | 2026-08-05 — https://www.doabooks.org/en/publishers/join-doab | Open Directory of Open Access Books submit page (new tab)Directory of Open Access Books details |
| 626 | 36 | LF AI & Data Foundation | lfaidata.foundation | Other opportunities | Paid | Moderate | Later | Verified live | Join only when your tool will fund and actively contribute to open-source AI or data work. | Linux Foundation corporate membership rules apply; free associate status is limited to approved nonprofits, projects or government bodies. | 2026-08-05 official LF AI & Data join page | Open LF AI & Data Foundation submit page (new tab)LF AI & Data Foundation details |
| 627 | 36 | OASIS Open | oasis-open.org | Other opportunities | Paid | Moderate | Later | Verified live | Join only to contribute substantively to relevant security or privacy technical committees and use approved organization metadata. | Reconfirm current dues before purchase; membership is not endorsement and lower tiers may not include a linked logo. | 2026-08-05 official OASIS join and members pages | Open OASIS Open submit page (new tab)OASIS Open details |
| 628 | 36 | Open Source Initiative | opensource.org | Other opportunities | Paid | Moderate | Later | Verified live | After releasing meaningful OSI-licensed code, consider sponsorship only when supporting OSI aligns with your tool strategy. | Financial sponsorship is not certification, governance influence or product endorsement; do not pay solely for a backlink. | 2026-08-05 official OSI benefits and sponsorship document | Open Open Source Initiative submit page (new tab)Open Source Initiative details |
Behind the list
Every row here starts as a line in a sheet, gets normalised into one of 15 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.
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.