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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 | 48 | DuckDB Community Extensions | duckdb.org | Marketplaces and app stores | Free | Quick | Later | Verified live | Build table functions that import, normalize and query your tool report JSON or NDJSON with typed findings, then submit the extension descriptor for central build and distribution. | Requires public open-source GitHub code, CMake build and supported toolchains/platforms; demonstrate value beyond DuckDB's generic JSON reader. | 2026-08-05 | Open DuckDB Community Extensions submit page (new tab)DuckDB Community Extensions details |
| 2 | 48 | Figma Community | figma.com | Marketplaces and app stores | Free | Quick | Later | Not submitted | Publish design asset or privacy checklist template. | Needs useful Figma file/plugin; no pure promo. | 2026-07-30 | Open Figma Community submit page (new tab)Figma Community details |
| 3 | 48 | OctoPrint Plugin Repository | plugins.octoprint.org | Marketplaces and app stores | Free | Quick | Later | Verified live | Build a maintained OctoPrint plugin for a credible your tool-related workflow such as privacy-safe print logs or metadata checks, then register it through the official repository pull request. | Only pursue a genuine OctoPrint use case; maintainers are responsible for API compatibility, bugs and security fixes, and the repository's CI must accept the listing metadata. | 2026-08-05 | Open OctoPrint Plugin Repository submit page (new tab)OctoPrint Plugin Repository details |
| 4 | 48 | OpenFeature Ecosystem | openfeature.dev | Marketplaces and app stores | Free | Quick | Later | Verified live | Implement a genuine OpenFeature provider, hook or integration around an your tool configuration or audit-health use case, publish it and add it to the ecosystem documentation. | Must implement the OpenFeature contract and solve a credible feature-delivery problem; a nominal wrapper or backlink-only documentation pull request will not qualify. | 2026-08-05 | Open OpenFeature Ecosystem submit page (new tab)OpenFeature Ecosystem details |
| 5 | 46 | Apache Camel Components | camel.apache.org | Marketplaces and app stores | Free | Moderate | Later | Verified live | Build a production-grade Camel component for your tool APIs and propose it upstream with generated component docs and tests. | Large ASF contribution: Java 21/Maven build, public dependencies, tests, docs, real contributor profile, AI attribution where relevant and community review required. | 2026-08-05 — https://camel.apache.org/camel-core/contributing/index.html | Open Apache Camel Components submit page (new tab)Apache Camel Components details |
| 6 | 46 | Bubble Showcase | bubble.io | Marketplaces and app stores | Free | Moderate | Later | Needs checking | Only submit if you build a Bubble-related app/template. | Not fit unless Bubble asset exists. | 2026-07-30 | Open Bubble Showcase submit page (new tab)Bubble Showcase details |
| 7 | 46 | Cytoscape App Store | apps.cytoscape.org | Marketplaces and app stores | Free | Moderate | Later | Verified live | Build a Cytoscape 3 app for a genuine graph privacy, provenance or network-audit workflow, provide website/source metadata and submit its first release for administrator approval. | Must add real Cytoscape functionality and remain compatible; the first release is manually approved and a generic external-link launcher is inappropriate. | 2026-08-05 | Open Cytoscape App Store submit page (new tab)Cytoscape App Store details |
| 8 | 46 | Galaxy ToolShed | toolshed.g2.bx.psu.edu | Marketplaces and app stores | Free | Moderate | Later | Verified live | Build a tested Galaxy wrapper for an your tool medical-data privacy or de-identification workflow and publish it in the main ToolShed. | Only suitable for a functioning Galaxy utility; develop and test locally, follow Planemo and IUC practices, then create and upload a repository. | 2026-08-05 — https://galaxyproject.org/toolshed/ | Open Galaxy ToolShed submit page (new tab)Galaxy ToolShed details |
| 9 | 46 | Kodi Add-ons | addons.kodi.tv | Marketplaces and app stores | Free | Moderate | Later | Live, conditional | Create a genuine media-metadata privacy or local-safety add-on and submit it to Kodi's official repository. | Requires supported Python, compatible versions, licence and code review; piracy-related or promotional wrappers are prohibited. | 2026-08-05 official Kodi Submitting Add-ons guide | Open Kodi Add-ons submit page (new tab)Kodi Add-ons details |
| 10 | 46 | Lapce Volts Registry | lapce.dev | Marketplaces and app stores | Free | Moderate | Later | Verified live | Build a WASI/LSP Volt that surfaces useful your tool diagnostics for HTML or SEO configuration files, then publish it with the official Volts CLI. | Official guide is older while the registry remains live; validate the current Volt SDK/runtime and review behavior before investment, and avoid a thin marketing launcher. | 2026-08-05 | Open Lapce Volts Registry submit page (new tab)Lapce Volts Registry details |
| 11 | 46 | Lite XL Plugin Repository | lite-xl.com | Marketplaces and app stores | Free | Moderate | Later | Verified live | Create a Lua plugin with real commands for your tool URL audits or JSON validation and add a conforming manifest entry to the official Lite XL plugin repository. | Manifest must pin remote commits and checksums and pass repository review; the canonical outbound link may point to source, so a direct domain backlink is not guaranteed. | 2026-08-05 | Open Lite XL Plugin Repository submit page (new tab)Lite XL Plugin Repository details |
| 12 | 46 | NWB NDX Catalog | nwb-extensions.github.io | Marketplaces and app stores | Free | Moderate | Later | Verified live | Create a meaningful NWB extension for privacy, provenance, or consent metadata and submit its staged-extension YAML through an official pull request. | Must extend the NWB schema for a real neurodata use case with valid metadata, tests, maintainer details, and community approval. | Official NWB staged-extension and NDX catalog documentation checked 2026-08-05 | Open NWB NDX Catalog submit page (new tab)NWB NDX Catalog details |
| 13 | 46 | openHAB Add-on Store | openhab.org | Marketplaces and app stores | Free | Moderate | Later | Verified live | Build a real openHAB add-on that integrates an your tool home-network privacy or safety service, provide addon.xml, tests and documentation, then submit it upstream. | A genuine device or service integration is required; DCO, code quality, documentation and maintainer review apply, and marketing-only bindings are unsuitable. | 2026-08-05 | Open openHAB Add-on Store submit page (new tab)openHAB Add-on Store details |
| 14 | 46 | QIIME 2 Library | library.qiime2.org | Marketplaces and app stores | Free | Moderate | Later | Verified live | Build and test a legitimate QIIME 2 plugin for a microbiome-data privacy, validation or provenance use case, then distribute it through the QIIME 2 Library. | Only credible microbiome or compatible data-science functionality qualifies; plugin APIs, packaging, testing and maintenance requirements apply. | 2026-08-05 | Open QIIME 2 Library submit page (new tab)QIIME 2 Library details |
| 15 | 45 | Make Partners | make.com | Marketplaces and app stores | Free + paid tier | Quick | Later | Needs checking | Build Make app/integration for workflows. | Only if integration exists. | 2026-07-30 | Open Make Partners submit page (new tab)Make Partners details |
| 16 | 45 | NoCodeDevs | nocodedevs.com | Marketplaces and app stores | Free + paid tier | Quick | Later | Needs checking | Post useful no-code tutorial/resource. | Community rules; no promo spam. | 2026-07-30 | Open NoCodeDevs submit page (new tab)NoCodeDevs details |
| 17 | 45 | VS Code Marketplace | marketplace.visualstudio.com | Marketplaces and app stores | Free + paid tier | Quick | Later | Not submitted | Publish dev utility extension linking your tool docs. | Only if real VS Code extension exists. | 2026-07-30 | Open VS Code Marketplace submit page (new tab)VS Code Marketplace details |
| 18 | 45 | Zapier Platform | zapier.com | Marketplaces and app stores | Free + paid tier | Quick | Later | Needs checking | Build Zapier integration if your tool exposes API/workflows. | Requires real integration; not immediate backlink. | 2026-07-30 | Open Zapier Platform submit page (new tab)Zapier Platform details |
| 19 | 44 | AppSumo Partners | 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 |
| 20 | 44 | Kong Partner Plugin Hub | konghq.com | Marketplaces and app stores | Not stated | Quick | Later | Live, conditional | Build a maintained your tool Kong integration or plugin, then pursue the technology-partner path for possible Plugin Hub inclusion. | Third-party Plugin Hub entries are for accepted Kong partners with real supported plugins; a community plugin alone does not guarantee Hub placement. | 2026-08-05 official Kong partner, custom-plugin and Plugin Hub documentation | Open Kong Partner Plugin Hub submit page (new tab)Kong Partner Plugin Hub details |
| 21 | 43 | Microsoft Edge Add-ons | microsoftedge.microsoft.com | Marketplaces and app stores | Free + paid tier | Moderate | Later | Not submitted | Publish Edge version of extension. | Needs developer account and review. | 2026-07-30 | Open Microsoft Edge Add-ons submit page (new tab)Microsoft Edge Add-ons details |
| 22 | 42 | Makerpad | makerpad.co | Marketplaces and app stores | Not stated | Moderate | Later | Needs checking | Pitch tutorial/resource if your tool helps no-code makers. | Airtable/Zapier/no-code angle needed. | 2026-07-30 | Open Makerpad submit page (new tab)Makerpad details |
| 23 | 42 | NoCodeList | nocodelist.co | Marketplaces and app stores | Not stated | Moderate | Later | Needs checking | Submit your tool if no-code resource/tool fit. | Verify submit form. | 2026-07-30 | Open NoCodeList submit page (new tab)NoCodeList details |
| 24 | 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 |
| 25 | 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 |
| 26 | 38 | EOSC Marketplace | marketplace.eosc-portal.eu | Marketplaces and app stores | Paid | Quick | Later | Live, conditional | Onboard only when your tool is a mature, live and independently valuable service for the European research community, under a legal or hosting entity. | Provider must control delivery; service should meet EOSC relevance and maturity criteria, generally TRL 7+, and pass profile validation. | 2026-08-05 official EOSC Provider Portal inclusion criteria and marketplace | Open EOSC Marketplace submit page (new tab)EOSC Marketplace 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.