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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 | 76 | C2PA | c2pa.org | Publishing platforms | Paid | Quick | High | Live, conditional | Apply through the official Linux Foundation enrollment if your tool will genuinely implement or contribute to C2PA standards. | Strong technical fit and participation are required; acceptance and roster visibility are not a self-serve directory shortcut. | 2026-08-04 | Open C2PA submit page (new tab)C2PA details |
| 2 | 58 | Micro.blog | micro.blog | Publishing platforms | Paid | Quick | Medium | Needs checking | Create a founder blog that shares compact product lessons and full tutorials linking to the relevant your tool page when useful. | Paid service; links should support genuine posts and community participation, not repetitive product promotion. | 2026-08-03 | Open Micro.blog submit page (new tab)Micro.blog details |
| 3 | 56 | Bytes | bytes.dev | Publishing platforms | Paid | Moderate | Medium | Verified live | Sponsor your tool’s strongest browser or JavaScript-based developer utility with copy tailored to working JS developers. | Only relevant developer products fit; sponsorship is advertising and does not guarantee an indexed or followed backlink. | https://bytes.dev/advertise | Open Bytes submit page (new tab)Bytes details |
| 4 | 56 | Changelog Media | changelog.com | Publishing platforms | Paid | Moderate | Medium | Verified live | Run a clearly disclosed campaign for your tool’s developer and security tools across relevant Changelog podcasts or newsletters. | Free news submissions explicitly reject commercial products and services, so use sponsorship; treat links as ads, not PageRank. | https://changelog.com/news/submit | Open Changelog Media submit page (new tab)Changelog Media details |
| 5 | 56 | Contently | contently.com | Publishing platforms | Paid | Moderate | Medium | Verified live | Use a real writer or designer identity, add authored your tool work as a properly credited clip or case study, and include the personal website link in the profile. | For authentic individual freelancers, not brand shells; approval needs portfolio depth, and public portfolio pages are intentionally noindex. | Official Contently portfolio visibility and setup guidance checked 2026-08-07 | Open Contently submit page (new tab)Contently details |
| 6 | 56 | TLDR | tldr.tech | Publishing platforms | Paid | Moderate | Medium | Verified live | Place a targeted your tool campaign in TLDR Dev, InfoSec, AI, Tech, Product, or Founders with a focused landing page. | Maximum three advertisers per issue, but email or archive links are paid placements and offer no guaranteed SEO value. | https://advertise.tldr.tech/ | Open TLDR submit page (new tab)TLDR details |
| 7 | 56 | UXfolio | uxfol.io | Publishing platforms | Paid | Moderate | Medium | Not submitted | Document your tool privacy, accessibility, and tool-discovery UX as a credible case study and link to the live product from relevant case-study text. | Publishing requires a paid plan; the portfolio must show a real UX process and outcome rather than a promotional landing page. | 2026-08-03 | Open UXfolio submit page (new tab)UXfolio details |
| 8 | 56 | Write.as | write.as | Publishing platforms | Paid | Moderate | Medium | Needs checking | Start a focused your tool field-notes blog and publish useful privacy, accessibility, and security explainers with natural source links. | Free registrations are currently closed; publish substantial original writing and do not create a thin backlink-only blog. | 2026-08-03 | Open Write.as submit page (new tab)Write.as details |
| 9 | 53 | SitePoint | sitepoint.com | Publishing platforms | Paid | Involved | Medium | Verified live | Submit a deep technical tutorial showing a generalizable web, security, or privacy technique used while building your tool. | Must be original and educational, not promotional; current rules require human-authored work with less than 50% AI involvement. | https://www.sitepoint.com/write-for-us/ | Open SitePoint submit page (new tab)SitePoint 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.