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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 100 | ACT Rules Community | act-rules.github.io | Communities and forums | Free | Quick | Do first | Verified live | Implement applicable ACT Rules, execute official test cases, publish the implementation report, join ACT-R CG, and propose your tool as an implementation. | Requires genuine rule implementation and reproducible results; inaccurate or partial claims will not qualify. | Official implementation instructions checked 2026-08-05 | Open ACT Rules Community submit page (new tab)ACT Rules Community details |
| 2 | 84 | Cloudron Community Apps | cloudron.io | Communities and forums | Free | Moderate | High | Verified live | Package a secure self-hosted your app for Cloudron, publish its version catalog and documentation, then request inclusion in Community Apps. | Must support Cloudron's read-only filesystem, backups, updates, health checks, manifest fields, and publicly hosted version catalog; community apps are not reviewed by Cloudron. | Official Cloudron packaging and publishing documentation checked 2026-08-05 | Open Cloudron Community Apps submit page (new tab)Cloudron Community Apps details |
| 3 | 84 | ethical.net | ethical.net | Communities and forums | Free | Moderate | High | Verified live | Submit your tool only with concrete evidence of privacy-first operation, local processing, transparent data practices, accessibility, and useful free resources. | Disclose the relationship, provide evidence, avoid unsupported ethical claims or promotional link drops, and let the community evaluate it. | Official Ethical.net directory suggestion thread checked 2026-08-07 | Open ethical.net submit page (new tab)ethical.net details |
| 4 | 84 | Hackaday.io | hackaday.io | Communities and forums | Free | Moderate | High | Verified live | Document a real hardware, privacy or security build that uses your tool, including schematics, progress logs and a natural official-project link. | Projects should document genuine work and follow community conduct; advertising-only pages and repetitive link posts are inappropriate. | 2026-08-03 | Open Hackaday.io submit page (new tab)Hackaday.io details |
| 5 | 84 | Streamlit Community Cloud | streamlit.io | Communities and forums | Free | Moderate | High | Verified live | Deploy an educational your tool data or AI demo from a public GitHub repository and include a useful link to the full tool or documentation. | The app must work independently, protect secrets and comply with resource limits; do not create a doorway page solely for a backlink. | 2026-08-03 | Open Streamlit Community Cloud submit page (new tab)Streamlit Community Cloud details |
| 6 | 84 | Windmill Hub | windmill.dev | Communities and forums | Free | Moderate | High | Verified live | Publish a reusable your tool-backed privacy or security script, flow, app, or resource type for the public Windmill Hub. | Submission must be reusable and documented; Windmill team reviews and approves community Hub entries. | 2026-08-05 | Open Windmill Hub submit page (new tab)Windmill Hub details |
| 7 | 81 | Instructables | instructables.com | Communities and forums | Free | Involved | High | Verified live | Publish a detailed build or usage tutorial around an original your tool workflow, with the relevant tool link only where it helps readers. | Commercial projects are acceptable only when the article is genuinely instructional; include original steps, images, and results. | https://www.instructables.com/create/ | Open Instructables submit page (new tab)Instructables details |
| 8 | 74 | data.world | data.world | Communities and forums | Paid | Moderate | High | Verified live | Publish a documented synthetic privacy, redaction, accessibility, or scam-detection benchmark dataset. | Use an appropriate licence and rich metadata; never publish proprietary, copyrighted, sensitive, or personal data. | Official data.world dataset creation documentation checked 2026-08-07 | Open data.world submit page (new tab)data.world details |
| 9 | 66 | TrueNAS Apps Market | apps.truenas.com | Communities and forums | Free | Moderate | Medium | Verified live | Create a secure Docker Compose-based your tool self-hosted deployment, test it against TrueNAS app tooling and submit it to the official community catalog with useful documentation/resources. | Requires a real containerized app, local validation, maintained versions and clear storage/network/security settings; community apps are independently supported and contributions go through repository review. | 2026-08-05 | Open TrueNAS Apps Market submit page (new tab)TrueNAS Apps Market details |
| 10 | 63 | Hackster.io | hackster.io | Communities and forums | Free | Involved | Medium | Verified live | Publish a detailed hardware or IoT project that genuinely uses your tool, with code, parts, instructions and an external tutorial link where useful. | Hardware-specific; sales pitches and non-project blog posts are prohibited, and discoverable projects must be complete. | Official Hackster project docs checked 2026-07-30 | Open Hackster.io submit page (new tab)Hackster.io details |
| 11 | 46 | BioImage.IO | bioimage.io | Communities and forums | Free | Moderate | Later | Verified live | Contribute a documented bioimaging privacy or de-identification model, application integration, or other qualifying resource linked to your tool. | Must genuinely serve bioimaging, follow the BioImage.IO resource specification and model card requirements, and pass community validation. | 2026-08-05 — https://bioimage.io/docs/ | Open BioImage.IO submit page (new tab)BioImage.IO 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.