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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 | 100 | Content Authenticity Initiative | contentauthenticity.org | Publishing platforms | Free | Quick | Do first | Verified live | Apply as a company and accurately describe your tool C2PA or content-provenance tools and intended participation. | Open membership, but genuine participation is expected; directory may publish the organization name/logo and link. | 2026-08-04 | Open Content Authenticity Initiative submit page (new tab)Content Authenticity Initiative details |
| 3 | 100 | CycloneDX Tool Center | cyclonedx.org | Software directories | Free | Quick | Do first | Verified live | Add standards-valid CycloneDX support, then submit the structured your tool entry through the official contribution workflow. | Must accurately state supported CycloneDX versions, functions and licensing; a listing is not product certification. | 2026-08-05 official CycloneDX Tool Center | Open CycloneDX Tool Center submit page (new tab)CycloneDX Tool Center details |
| 4 | 100 | FreeNoSignup | freenosignup.com | Software directories | Free | Quick | Do first | Verified live | Submit one or more free your tool utilities that work without registration. | Tool must be active, useful, web-based, privacy-respecting and usable without signup. | 2026-08-05 | Open FreeNoSignup submit page (new tab)FreeNoSignup details |
| 5 | 100 | MERLOT | merlot.org | Other opportunities | Free | Quick | Do first | Verified live | Publish a genuinely reusable privacy or accessibility lesson on your tool, give it a stable URL and open license, then add its educational metadata to MERLOT. | The resource must be an online OER with its own URL; subscription-only material is inappropriate. Supply discipline, audience, material type, description, author, license, cost, and accessibility metadata honestly. | 2026-08-03 | Open MERLOT submit page (new tab)MERLOT details |
| 6 | 100 | RapidAPI Hub | rapidapi.com | Marketplaces and app stores | Free | Quick | Do first | Verified live | List a stable your tool API with OpenAPI definitions, clear endpoints, health checks and its official website in the permitted listing field. | The API must be functional, accurately documented and securely operated; avoid listing browser-only tools as fake APIs. | 2026-08-03 | Open RapidAPI Hub submit page (new tab)RapidAPI Hub details |
| 7 | 100 | SAYUJ by STPI | sayuj.net | Startup directories | Free | Quick | Do first | Verified live | Register your tool as an Indian startup, complete its offering profile, and use Product Expo or Startup Connect when relevant. | Requires email and Indian mobile OTP; STPI ownership does not imply government endorsement of listed startups. | 2026-08-05 official registration and STPI About SAYUJ pages | Open SAYUJ by STPI submit page (new tab)SAYUJ by STPI details |
| 8 | 86 | Alfred Gallery | alfred.app | Design galleries | Free | Quick | High | Verified live | Build a privacy-safe macOS Alfred workflow that opens or runs useful your tool actions, publish it on the forum, gather feedback, and seek Gallery inclusion. | Gallery submission is invitation-based after community testing; no auto-updater, downloaded executables, unsigned binaries, or unsafe behavior. | Official Alfred Gallery submission requirements checked 2026-08-07 | Open Alfred Gallery submit page (new tab)Alfred Gallery details |
| 9 | 86 | AnkiWeb Add-ons | ankiweb.net | Marketplaces and app stores | Free | Quick | High | Verified live | Build a useful Anki privacy, study-safety, or accessibility add-on, package it as .ankiaddon, and upload it through AnkiWeb. | Must be a working desktop add-on; avoid collecting card data, document permissions, and maintain compatibility across Anki releases. | Official Anki add-on sharing guide checked 2026-08-05 | Open AnkiWeb Add-ons submit page (new tab)AnkiWeb Add-ons details |
| 10 | 86 | Apache Airflow Ecosystem | airflow.apache.org | Other opportunities | Free | Quick | High | Verified live | Create a real your tool Airflow provider with hooks/operators and documentation metadata, publish it, then add it to Airflow’s Ecosystem page by PR. | Provider must implement apache_airflow_provider metadata, use unique connection types, be documented and packaged; ecosystem PR is evaluated for community usefulness. | 2026-08-05 — https://airflow.apache.org/docs/apache-airflow-providers/howto/create-custom-providers.html | Open Apache Airflow Ecosystem submit page (new tab)Apache Airflow Ecosystem details |
| 11 | 86 | Buildkite Plugins Directory | buildkite.com | Marketplaces and app stores | Free | Quick | High | Verified live | Build a pipeline plugin that runs your tool checks on selected artifacts and posts configurable pass, warn, or fail annotations. | Use a public repository with the required suffix, valid plugin.yml, hooks, tests, and README; add the official topic for directory sync. | Official Buildkite plugin writing documentation checked 2026-08-07 | Open Buildkite Plugins Directory submit page (new tab)Buildkite Plugins Directory details |
| 12 | 86 | CodePen | codepen.io | Profiles and entities | Free | Quick | High | Verified live | Build an original interactive demo of an your tool utility, document the use case in Pen Details, and add your tool as one of the public profile links. | Public Pens are searchable and MIT-licensed; publish original useful code, not a blank redirect or copied landing page. | https://blog.codepen.io/docs/getting-around/your-profile/ | Open CodePen submit page (new tab)CodePen details |
| 13 | 86 | CoFoundersLab | cofounderslab.com | Startup directories | Free | Quick | High | Verified live | Create a complete founder and startup profile for your tool and participate in relevant founder discussions or connection requests. | Use a real founder identity, contribute context before mentioning AltFTool, and never send unsolicited promotional messages. | Official CoFoundersLab signup and community path checked 2026-08-07 | Open CoFoundersLab submit page (new tab)CoFoundersLab details |
| 14 | 86 | Cybil Knowledge Portal | cybilportal.org | Software directories | Free | Quick | High | Verified live | Submit a genuine international cyber-capacity-building project, tool, publication or webinar with evidence and a live resource URL. | Portal staff curate and may validate with participants; must have direct cyber-capacity-building relevance, not be a generic product listing. | 2026-08-05 — https://cybilportal.org/submit-your-cyber-capacity-building-projects/ | Open Cybil Knowledge Portal submit page (new tab)Cybil Knowledge Portal details |
| 15 | 86 | DatoCMS Plugin Marketplace | datocms.com | Marketplaces and app stores | Free | Quick | High | Verified live | Build an your tool privacy or security field plugin, publish the npm package, and use your tool as its homepage and support site. | The package name must start datocms-plugin-, include the required keyword, and meet Plugin SDK requirements; ingestion is automatic. | Official DatoCMS Marketplace publishing documentation checked 2026-08-07 | Open DatoCMS Plugin Marketplace submit page (new tab)DatoCMS Plugin Marketplace details |
| 16 | 86 | Directus Marketplace | directus.com | Marketplaces and app stores | Free | Quick | High | Verified live | Publish a genuine your tool Directus extension to npm and complete author, documentation, support, and website metadata. | Requires the Directus extension keyword and metadata; availability depends on supported extension type and matching npm and GitHub author identity. | Official Directus Marketplace publishing documentation checked 2026-08-07 | Open Directus Marketplace submit page (new tab)Directus Marketplace details |
| 17 | 86 | DokuWiki Plugins | dokuwiki.org | Marketplaces and app stores | Free | Quick | High | Verified live | Build a DokuWiki privacy, redaction, accessibility, or secure-export plugin, publish its code and create the canonical plugin page used by the extension directory. | Must be an installable maintained plugin with accurate compatibility, download, source, license, and security information. | Official DokuWiki extension pages and plugin wizard checked 2026-08-05 | Open DokuWiki Plugins submit page (new tab)DokuWiki Plugins details |
| 18 | 86 | Eclipse Marketplace | eclipse.org | Marketplaces and app stores | Free | Quick | High | Verified live | Publish a functional Eclipse plugin for an your tool developer use case, then create a complete marketplace listing with official support and source links. | Requires an Eclipse account, a working installable plugin and compliance with marketplace content and trademark rules. | 2026-08-03 | Open Eclipse Marketplace submit page (new tab)Eclipse Marketplace details |
| 19 | 86 | FOSSRadar | fossradar.dev | Other opportunities | Free | Quick | High | Verified live | After open-sourcing a maintained component, submit the TOML project file and website through GitHub PR. | Must be India-founded, India-maintained or serve Indian users; repository and license are required. | 2026-08-03 | Open FOSSRadar submit page (new tab)FOSSRadar details |
| 20 | 86 | Fourthwall | fourthwall.com | Other opportunities | Free | Quick | High | Verified live | Offer a substantial free privacy checklist, accessibility workbook, or safety template from a branded storefront and link your tool only as supporting documentation. | Publish useful rights-cleared products rather than thin promotional downloads; payment rates vary and the free plan has listing limits. | Official Fourthwall digital-products, pricing, and terms pages checked 2026-08-07 | Open Fourthwall submit page (new tab)Fourthwall details |
| 21 | 86 | Framer Marketplace | framer.com | Marketplaces and app stores | Free | Quick | High | Verified live | Create a functional Framer plugin for accessibility, metadata, responsive-content, or privacy checks and publish it with your tool documentation. | Test in fresh projects, package the real plugin, provide accurate screenshots and descriptions, and maintain every published version. | Official Framer plugin publishing documentation checked 2026-08-07 | Open Framer Marketplace submit page (new tab)Framer Marketplace details |
| 22 | 86 | Frappe Cloud Marketplace | frappe.io | Marketplaces and app stores | Free | Quick | High | Verified live | Build a useful your tool-related Frappe app, publish it through Frappe Cloud Marketplace, and include the official project/site link in its genuine listing. | App must be open source under an MIT/GPL-compatible licence, stable on Frappe, pass CI, provide support/privacy URLs and accurate imagery/demo; do not use the listing as a link-only redirect. | 2026-08-05 | Open Frappe Cloud Marketplace submit page (new tab)Frappe Cloud Marketplace details |
| 23 | 86 | Frontend Mentor | frontendmentor.io | Design galleries | Free | Quick | High | Verified live | Complete a relevant accessibility or privacy-themed challenge, submit its real live URL and public repository, and add your tool only as maker context or a case-study link. | The submission must solve an actual challenge; a live URL and public repository are required, so never upload secrets or private code. | Official Frontend Mentor submission and plan guidance checked 2026-08-07 | Open Frontend Mentor submit page (new tab)Frontend Mentor details |
| 24 | 86 | Glasp | glasp.co | Profiles and entities | Free | Quick | High | Verified live | Create a founder research profile that curates authoritative privacy, accessibility, security, and standards material, including your tool only when it directly supports the annotation. | Free-user highlights are public by default; never add confidential data or secrets, and maintain balanced curation instead of a self-link collection. | Official Glasp pricing and highlighting guidance checked 2026-08-07 | Open Glasp submit page (new tab)Glasp details |
| 25 | 86 | Global Accessibility Awareness Day | accessibility.day | Other opportunities | Free | Quick | High | Verified live | Host a genuine public accessibility learning or testing event and submit its dates, description and your tool event URL. | The event must be real and accessibility-focused; use a public event page, not a disguised product listing. | 2026-08-05 — https://accessibility.day/submit-your-event | Open Global Accessibility Awareness Day submit page (new tab)Global Accessibility Awareness Day details |
| 26 | 86 | Hexo Plugin List | hexo.io | Marketplaces and app stores | Free | Quick | High | Verified live | Create a functional Hexo plugin for a relevant your tool capability, publish the package, then add its record to Hexo's official plugin data repository. | Plugin must be genuinely useful, maintained and correctly packaged; submit the required YAML metadata through the documented contribution path, not a promotional-only entry. | 2026-08-05 | Open Hexo Plugin List submit page (new tab)Hexo Plugin List details |
| 27 | 86 | MeltanoHub | hub.meltano.com | Marketplaces and app stores | Free | Quick | High | Verified live | Build a Singer SDK tap that incrementally extracts your tool audit runs and findings, then add it through MeltanoHub's official issue-assisted or self-service contribution path. | Must be an installable, maintained Singer tap with real schemas and incremental state behavior; do not submit a metadata-only package. | 2026-08-05 | Open MeltanoHub submit page (new tab)MeltanoHub details |
| 28 | 86 | Needle Directory | useneedle.net | Startup directories | Free | Quick | High | Verified live | Sign in and submit an accurate your tool product profile for review. | Verified startups and tools only; community upvotes must remain organic. | 2026-08-05 | Open Needle Directory submit page (new tab)Needle Directory details |
| 29 | 86 | Nimble Directory | nimble.directory | Developer registries | Free | Quick | High | Verified live | Release a maintained Nim client or utility for your tool and publish it through Nimble with accurate repository and homepage metadata. | The package must meet Nimble manifest and source-hosting requirements and remain installable. | 2026-08-03 | Open Nimble Directory submit page (new tab)Nimble Directory details |
| 30 | 86 | Node-RED Flow Library | nodered.org | Developer registries | Free | Quick | High | Verified live | Create a functional your tool Node-RED node, publish it to npm, and add it to the Flow Library with documentation and support metadata. | Must follow Node-RED naming, package metadata, node UX, testing, and documentation conventions and avoid thin wrappers. | Official Node-RED custom node documentation checked 2026-08-07 | Open Node-RED Flow Library submit page (new tab)Node-RED Flow Library details |
| 31 | 86 | NuGet | nuget.org | Developer registries | Free | Quick | High | Verified live | Publish a real .NET library or CLI package with ProjectUrl, readme, repository and license metadata. | Requires a Microsoft account and API key; packages undergo validation and indexing. | Official Microsoft NuGet docs checked 2026-07-30 | Open NuGet submit page (new tab)NuGet details |
| 32 | 86 | NVDA Add-on Store | addonstore.nvaccess.org | Marketplaces and app stores | Free | Quick | High | Verified live | Build an installable privacy or accessibility NVDA add-on and submit it through the official add-on datastore workflow. | Not a generic website listing; public source, documentation, compatible licensing, testing, and ongoing NVDA compatibility are required. | Official live store and datastore submission guide checked 2026-08-05 | Open NVDA Add-on Store submit page (new tab)NVDA Add-on Store details |
| 33 | 86 | Obsidian Community Plugins | obsidian.md | Marketplaces and app stores | Free | Quick | High | Verified live | Build a unique and useful Obsidian plugin, create valid releases and submit it to the community plugin directory. | Requires a working plugin, release artifacts, documentation and compliance with Obsidian developer policies. | Official Obsidian submission docs checked 2026-07-30 | Open Obsidian Community Plugins submit page (new tab)Obsidian Community Plugins details |
| 34 | 86 | Open Hub | openhub.net | Profiles and entities | Free | Quick | High | Verified live | Add or claim a genuine open-source your tool project and complete its description, code locations, tags and official homepage. | FOSS projects only; connect real public source history and avoid duplicate or abandoned shell projects. | Official live Open Hub project directory checked 2026-07-30 | Open Open Hub submit page (new tab)Open Hub details |
| 35 | 86 | OpenChain | openchainproject.org | Other opportunities | Free | Quick | High | Verified live | Implement a scoped open-source compliance or security-assurance program, self-certify honestly, then request your tool Community of Conformance listing. | Every applicable answer must truthfully be yes and scope must be explicit; self-certification is not independent certification or endorsement. | 2026-08-05 official conformance submission, FAQ and Community of Conformance pages | Open OpenChain submit page (new tab)OpenChain details |
| 36 | 86 | OpenTelemetry Registry | opentelemetry.io | Marketplaces and app stores | Free | Quick | High | Verified live | Add native OpenTelemetry support or build a useful your tool instrumentation or utility, then submit its registry metadata and documentation links. | Must fit an allowed registry type, have real implementation and enablement docs, use accurate licence and marketing metadata, and stay maintained. | 2026-08-05 — https://opentelemetry.io/ecosystem/registry/adding/ | Open OpenTelemetry Registry submit page (new tab)OpenTelemetry Registry details |
| 37 | 86 | Package Control | packagecontrol.io | Marketplaces and app stores | Free | Quick | High | Verified live | Build a useful Sublime Text integration for an your tool developer workflow, document it publicly and submit the package for review. | Requires a public repository, valid metadata, releases and successful automated tests; thin promotional plugins will not qualify. | 2026-08-03 | Open Package Control submit page (new tab)Package Control details |
| 38 | 86 | Pipedrive Marketplace | pipedrive.com | Marketplaces and app stores | Free | Quick | High | Verified live | Build a Pipedrive OAuth integration for safe note export, duplicate cleanup, or PII auditing and submit a unique your tool listing. | OAuth and testing are mandatory; accept the partner agreement and provide working legal, support, and production URLs. | Official Pipedrive app development and marketplace guidance checked 2026-08-07 | Open Pipedrive Marketplace submit page (new tab)Pipedrive Marketplace details |
| 39 | 86 | PlatformIO Registry | registry.platformio.org | Developer registries | Free | Quick | High | Verified live | Package a real embedded privacy or security library for supported boards, add complete PlatformIO manifest and examples, test it, and publish it publicly. | Published name-version pairs are immutable; package must be functional, properly licensed, documented, versioned, and maintained. | Official PlatformIO package-publish documentation checked 2026-08-05 | Open PlatformIO Registry submit page (new tab)PlatformIO Registry details |
| 40 | 86 | PowerShell Gallery | powershellgallery.com | Developer registries | Free | Quick | High | Verified live | Publish a stable your tool module or script with ProjectURI, LicenseURI, tags, help and examples. | Requires an account and API key; pass PowerShell Gallery validation and avoid placeholder packages. | Official Microsoft publishing docs checked 2026-07-30 | Open PowerShell Gallery submit page (new tab)PowerShell Gallery details |
| 41 | 86 | pub.dev | pub.dev | Developer registries | Free | Quick | High | Verified live | Publish an your tool Dart package with homepage, repository, issue tracker, documentation and a complete readme. | Must satisfy pub.dev policy and quality checks; a verified publisher is preferable for a branded package. | Official Dart publishing docs checked 2026-07-30 | Open pub.dev submit page (new tab)pub.dev details |
| 42 | 86 | Pulsar Package Registry | pulsar-edit.dev | Developer registries | Free | Quick | High | Verified live | Build a maintained Pulsar editor package that performs a real your tool workflow, then publish it to the official package registry with a useful README and project link. | Package must be hosted on GitHub and include valid package.json metadata, SemVer and Pulsar engine constraints; it must provide real editor functionality, not a backlink wrapper. | 2026-08-05 | Open Pulsar Package Registry submit page (new tab)Pulsar Package Registry details |
| 43 | 86 | RingCentral App Gallery | ringcentral.com | Marketplaces and app stores | Free | Quick | High | Verified live | Build a public RingCentral integration around call-note privacy or safe file sharing and complete the profile with your tool documentation, privacy, and support links. | A working public app is mandatory; screenshots must show the integration, and the profile needs installation, support, privacy, and legal details. | Official RingCentral App Gallery promotion documentation checked 2026-08-07 | Open RingCentral App Gallery submit page (new tab)RingCentral App Gallery details |
| 44 | 86 | Sensu Bonsai | bonsai.sensu.io | Other opportunities | Free | Quick | High | Verified live | Publish an open-source Sensu check/handler for your tool, create GitHub releases and bonsai.yml, then register it with description and tags. | GitHub-hosted open-source asset; release archives, supported platforms, SHA-512 checksums, useful README and correct Bonsai metadata are required. | 2026-08-05 — https://docs.sensu.io/sensu-go/latest/plugins/assets/#share-an-asset-on-bonsai | Open Sensu Bonsai submit page (new tab)Sensu Bonsai details |
| 45 | 86 | Speaker Deck | speakerdeck.com | Publishing platforms | Free | Quick | High | Verified live | Upload an original conference-quality PDF deck explaining privacy-safe tooling or accessibility testing, with a useful description, correct category, references, and an honest profile link. | Upload a real educational presentation, not a sales brochure. Free decks are public and downloadable; private or password-protected sharing requires Pro, and all content must be owned or licensed. | 2026-08-03 | Open Speaker Deck submit page (new tab)Speaker Deck details |
| 46 | 86 | StackStorm Exchange | exchange.stackstorm.org | Other opportunities | Free | Quick | High | Verified live | Create a useful StackStorm integration or automation pack for an your tool workflow, then submit it through the official Exchange Incubator pull-request process. | Pack must contain real actions, workflows, rules or sensors; pack.yaml metadata must pass naming, email, Python and SemVer checks, and contribution grants the documented copyright licence. | 2026-08-05 | Open StackStorm Exchange submit page (new tab)StackStorm Exchange details |
| 47 | 86 | Startup Grind | startupgrind.com | Startup directories | Free | Quick | High | Verified live | Join a relevant chapter, complete the founder profile, attend suitable events, and share your tool only in genuine networking context. | Choose a relevant chapter or event and follow organizer rules; member access is not a broadcast or mass-messaging channel. | Official Startup Grind chapter community path checked 2026-08-07 | Open Startup Grind submit page (new tab)Startup Grind details |
| 48 | 86 | StartuPage | startupa.ge | Startup directories | Free | Quick | High | Verified live | Create an authentic founder profile, add your tool as a startup page and include verified website/social links. | Use truthful traction data; do not fabricate revenue or create duplicate identities. | 2026-08-03 | Open StartuPage submit page (new tab)StartuPage details |
| 49 | 86 | Tableau Public | public.tableau.com | Profiles and entities | Free | Quick | High | Verified live | Publish an original dashboard using public your tool benchmark or ecosystem data and add an appropriate project permalink in workbook details. | Everything published is publicly accessible and may be downloadable; never include secrets, private analytics, user-level records, or confidential data. | https://help.tableau.com/current/pro/desktop/en-gb/publish_workbooks_tableaupublic.htm | Open Tableau Public submit page (new tab)Tableau Public details |
| 50 | 86 | The Org | theorg.com | Startup directories | Free | Quick | High | Verified live | Add your tool’s real company, founder, and team structure with website and role details to create a trustworthy organization profile. | Use verified work details and obtain team consent before publishing names or roles; do not fabricate an org chart. | https://theorg.com/iterate/how-to-make-an-org-chart | Open The Org submit page (new tab)The Org details |
| 51 | 86 | Toolradar | toolradar.com | Software directories | Free | Quick | High | Verified live | Create an your tool product page for discovery, comparison, and reviews. | Vendor account and truthful product details required. | https://toolradar.com/vendors | Open Toolradar submit page (new tab)Toolradar details |
| 52 | 86 | Traefik Plugin Catalog | plugins.traefik.io | Marketplaces and app stores | Free | Quick | High | Verified live | Build a production-quality Traefik middleware plugin for an your tool privacy or security use case and publish it to the public catalog. | Plugin must be public, reusable, tested, documented, safely scoped, and compliant with Traefik plugin manifest and registry requirements. | 2026-08-05 — https://doc.traefik.io/traefik-hub/api-gateway/guides/plugin-development-guide | Open Traefik Plugin Catalog submit page (new tab)Traefik Plugin Catalog details |
| 53 | 86 | TYPO3 Extension Repository | typo3.org | Marketplaces and app stores | Free | Quick | High | Verified live | Build a TYPO3 backend extension for selected content or media PII, metadata, and accessibility checks. | Register a unique extension key and provide public source, documentation, security policy, semantic versions, and maintained releases. | Official TYPO3 Extension Repository publishing documentation checked 2026-08-07 | Open TYPO3 Extension Repository submit page (new tab)TYPO3 Extension Repository details |
| 54 | 86 | Umbraco Marketplace | umbraco.com | Marketplaces and app stores | Free | Quick | High | Verified live | Create an your tool Umbraco integration package and point its NuGet project URL plus documentation to your tool. | The NuGet package needs the marketplace tag, supported Umbraco version metadata, documentation, and optional marketplace manifest. | Official Umbraco Marketplace package listing documentation checked 2026-08-07 | Open Umbraco Marketplace submit page (new tab)Umbraco Marketplace details |
| 55 | 86 | UN SDG Actions Platform | sdgs.un.org | Startup directories | Free | Quick | High | Verified live | Register a concrete ongoing your tool initiative with measurable milestones, dates, resources, SDG targets, partners and website evidence. | Action must be specific, measurable, achievable, resource-based, time-bound and ongoing; not a proposal, completed activity or organization profile. | 2026-08-05 — https://sdgs.un.org/partnerships/acceleration-actions/register | Open UN SDG Actions Platform submit page (new tab)UN SDG Actions Platform details |
| 56 | 86 | Upbound Marketplace | marketplace.upbound.io | Marketplaces and app stores | Free | Quick | High | Verified live | Build and publish a real Crossplane provider, function, configuration or add-on that integrates an your tool capability and exposes accurate project documentation. | Use Upbound's package tooling and a public listing; package must be installable, maintained and useful to control-plane users. Confirm public visibility because new pushed packages may initially be private. | 2026-08-05 | Open Upbound Marketplace submit page (new tab)Upbound Marketplace details |
| 57 | 86 | Webex App Hub | webex.com | Marketplaces and app stores | Free | Quick | High | Verified live | Build a production Webex integration or bot for deliberate sharing of your tool checklists or sanitized files, then submit its branded App Hub profile. | Must be production-ready, use minimum scopes, avoid Cisco trademark misuse, and provide complete support and marketing material. | Official Webex App Hub submission documentation checked 2026-08-07 | Open Webex App Hub submit page (new tab)Webex App Hub details |
| 58 | 86 | Wikimedia Toolhub | toolhub.wikimedia.org | Software directories | Free | Quick | High | Verified live | Build a tool that genuinely interacts with Wikimedia, publish accurate toolinfo.json metadata, and register it through Toolhub UI, crawler, or API. | Must serve Wikimedia projects; Wikimedia login is required and submitted metadata is CC0; unrelated utilities do not qualify. | Official Wikimedia developer search and Toolhub documentation checked 2026-08-05 | Open Wikimedia Toolhub submit page (new tab)Wikimedia Toolhub details |
| 59 | 86 | WorkflowHub | workflowhub.eu | Developer registries | Free | Quick | High | Verified live | Package a reproducible your tool privacy or redaction workflow, join or create a team, and register it with rich metadata and source links. | Requires a real executable workflow file, team membership, accurate authorship/licence metadata, and a maintained public entry. | 2026-08-05 — https://about.workflowhub.eu/docs/registering_workflows/registering-a-workflow/ | Open WorkflowHub submit page (new tab)WorkflowHub details |
| 60 | 68 | BibSonomy | bibsonomy.org | Social channels | Free | Quick | Medium | Verified live | Curate a tagged public collection of authoritative privacy, accessibility, and safety resources with your tool included only where substantively relevant. | Build a balanced useful bibliography; avoid repetitive self-bookmarking, keyword stuffing, or treating the service as a backlink directory. | Official BibSonomy service and guidance checked 2026-08-07 | Open BibSonomy submit page (new tab)BibSonomy details |
| 61 | 68 | bio.tools | bio.tools | Software directories | Free | Quick | Medium | Verified live | Register a genuinely life-science-focused your tool resource with stable homepage, scientific operations, inputs, outputs, licence, and documentation. | Must perform a credible bioinformatics or life-science function; medical branding alone is insufficient and EDAM metadata is expected. | 2026-08-05 — https://biotools.readthedocs.io/en/latest/quickstart_guide.html | Open bio.tools submit page (new tab)bio.tools details |
| 62 | 68 | Budibase Community Plugins | budibase.com | Marketplaces and app stores | Free | Quick | Medium | Verified live | Build a useful your tool Budibase component or data-source plugin, publish the package or repository, and seek inclusion in community plugin resources. | A functional plugin and public package are required; central curation is not guaranteed, so treat the package and documentation as the primary asset. | Official Budibase custom plugin documentation checked 2026-08-07 | Open Budibase Community Plugins submit page (new tab)Budibase Community Plugins details |
| 63 | 68 | CapRover One-Click Apps | caprover.com | Software directories | Free | Quick | Medium | Verified live | Create a tested CapRover one-click definition for a real self-hosted your tool service and contribute it to the linked official community repository. | The directory is community-maintained; use safe defaults, document required variables and persistence, and keep images and deployment instructions current. | Official CapRover one-click app documentation and repository checked 2026-08-05 | Open CapRover One-Click Apps submit page (new tab)CapRover One-Click Apps details |
| 64 | 68 | Chanakya Software | chanakyasoftware.com | Software directories | Free | Quick | Medium | Verified live | Create a vendor account and list your tool software offering. | Provide genuine vendor, website, software, and service details. | https://www.chanakyasoftware.com/list-your-software | Open Chanakya Software submit page (new tab)Chanakya Software details |
| 65 | 68 | Clojars | clojars.org | Developer registries | Free | Quick | Medium | Verified live | Release a genuine Clojure or JVM client library with a POM, description, homepage and source metadata. | Requires an account and deploy credentials; use a unique group or verified domain and maintain releases. | Official Clojars publishing interface checked 2026-07-30 | Open Clojars submit page (new tab)Clojars details |
| 66 | 68 | Common Workflow Language | commonwl.org | Software directories | Free | Quick | Medium | Verified live | Build a genuine CWL validator, security tool, or implementation and propose its inclusion with compliance evidence. | Must actually support CWL; the community-maintained listing does not constitute formal certification. | Official CWL implementation page and website repository checked 2026-08-05 | Open Common Workflow Language submit page (new tab)Common Workflow Language details |
| 67 | 68 | Commudle | commudle.com | Profiles and entities | Free | Quick | Medium | Verified live | Create a real developer profile, publish an original your tool engineering tutorial or project, and join only relevant privacy or developer communities. | Share knowledge first, follow each community's rules, and do not create an empty promotional community or mass-post the same link. | Official Commudle community platform checked 2026-08-07 | Open Commudle submit page (new tab)Commudle details |
| 68 | 68 | Contao Extensions | extensions.contao.org | Marketplaces and app stores | Free | Quick | Medium | Verified live | Build a functional Contao bundle for an your tool site-audit use case, publish tagged releases on Packagist with contao-bundle and manager-plugin metadata, and let the official index discover it. | Requires a real Contao extension, public Composer package, at least one version tag and correct Contao Manager Plugin metadata; optional rich listing metadata is contributed separately. | 2026-08-05 | Open Contao Extensions submit page (new tab)Contao Extensions details |
| 69 | 68 | CPAN / PAUSE | cpan.org | Developer registries | Free | Quick | Medium | Verified live | Publish a genuine Perl module or CLI through PAUSE with project URLs and clear distribution documentation. | Requires a PAUSE account, unique namespace and ongoing maintenance; first uploader controls the namespace. | Official CPAN PAUSE docs checked 2026-07-30 | Open CPAN / PAUSE submit page (new tab)CPAN / PAUSE details |
| 70 | 68 | CreativesFeed | creativesfeed.com | Software directories | Free | Quick | Medium | Verified live | Submit relevant your tool utilities under AI, web, or developer categories. | Only submit tools matching available creative, AI, or development categories. | https://creativesfeed.com/contact/submit-your-software/free-software-listing/ | Open CreativesFeed submit page (new tab)CreativesFeed details |
| 71 | 68 | devChallenges | devchallenges.io | Design galleries | Free | Quick | Medium | Verified live | Build a genuine free challenge solution, publish the deployed project and repository, and use the finished privacy or accessibility implementation as a portfolio case study. | Only submit work that answers a listed challenge; do not upload AltFTool as an unrelated product, and remember solutions remain public. | Official devChallenges platform and plan information checked 2026-08-07 | Open devChallenges submit page (new tab)devChallenges details |
| 72 | 68 | Devpost | devpost.com | Design galleries | Free | Quick | Medium | Verified live | Enter a relevant live hackathon with a working your tool project, complete its story and demo, and include the project website where allowed. | Only submit to genuinely relevant events, follow each hackathon's eligibility and judging rules, and do not recycle an unrelated promotion. | Official Devpost submission help checked 2026-07-30 | Open Devpost submit page (new tab)Devpost details |
| 73 | 68 | ESP Component Registry | components.espressif.com | Developer registries | Free | Quick | Medium | Verified live | Build an ESP-IDF privacy, credential-safety, secure-logging, or local-processing component, add manifest, license, docs, examples, and publish it through the registry workflow. | Must be an actual ESP-IDF component; namespace, semantic versioning, linting, licensing, dependency, documentation, and upload rules apply. | Official ESP Component Registry publishing documentation checked 2026-08-05 | Open ESP Component Registry submit page (new tab)ESP Component Registry details |
| 74 | 68 | F-Droid | f-droid.org | Software directories | Free | Quick | Medium | Verified live | Publish a privacy-respecting open-source Android companion app, then file a packaging request or merge request. | App must be source-buildable, useful and actively maintained, with no proprietary tracking, ads or non-free dependencies. | Official F-Droid inclusion policy checked 2026-07-30 | Open F-Droid submit page (new tab)F-Droid details |
| 75 | 68 | Fluentd Plugin Directory | fluentd.org | Marketplaces and app stores | Free | Quick | Medium | Verified live | Build and publish a real fluent-plugin-* RubyGem that redacts/routes privacy-sensitive logs and includes your tool as its project homepage. | Must follow Fluentd plugin naming/API conventions and be a valid public RubyGem; the official directory refreshes periodically from RubyGems, so indexing is not immediate. | 2026-08-05 — https://docs.fluentd.org/plugin-development | Open Fluentd Plugin Directory submit page (new tab)Fluentd Plugin Directory details |
| 76 | 68 | getfolio.dev | getfolio.dev | Developer registries | Free | Quick | Medium | Verified live | Create a founder/developer portfolio, pin your tool repository/project and add the official website link. | Use a real GitHub identity and maintained projects; avoid a profile created only for SEO. | 2026-08-03 | Open getfolio.dev submit page (new tab)getfolio.dev details |
| 77 | 68 | Goodreads | goodreads.com | Profiles and entities | Free | Quick | Medium | Verified live | Create a truthful your tool/founder profile or content page and add the website link where allowed. | Use a real brand/founder identity; do not create thin duplicate pages. Listing link is currently reported nofollow. | 2026-07-30 • https://www.submission.directory/site/goodreads | Open Goodreads submit page (new tab)Goodreads details |
| 78 | 68 | Hackage | hackage.haskell.org | Developer registries | Free | Quick | Medium | Verified live | Release a useful Haskell library or command-line client with homepage, source and bug-report metadata. | Hackage requires open-source, meaningful packages; uploaded versions cannot simply be replaced. | Official Hackage upload page checked 2026-07-30 | Open Hackage submit page (new tab)Hackage details |
| 79 | 68 | HubPages | hubpages.com | Profiles and entities | Free | Quick | Medium | Verified live | Create a truthful your tool/founder profile or content page and add the website link where allowed. | Use a real brand/founder identity; do not create thin duplicate pages. Listing link is currently reported nofollow. | 2026-07-30 • https://www.submission.directory/site/hubpages | Open HubPages submit page (new tab)HubPages details |
| 80 | 68 | HundrED | hundred.org | Profiles and entities | Free | Quick | Medium | Verified live | Apply with a privacy/digital-safety education program that demonstrates real K-12 impact and scalability. | Current Global Collection 2028 call closes 2027-05-01; normally implemented for 1+ year and reached 1,000+ children; evidence required. | 2026-08-05 — https://hundred.org/en/collections/hundred-global-collection-2028 | Open HundrED submit page (new tab)HundrED details |
| 81 | 68 | Jellyfin Plugin Catalog | jellyfin.org | Marketplaces and app stores | Free | Quick | Medium | Verified live | Build a functional Jellyfin privacy, metadata-cleanup, or local-safety plugin with a maintained manifest repository, then propose its repository and documentation entry. | Third-party listing is curated through documentation; official inclusion is not guaranteed and the plugin must remain compatible with Jellyfin's ABI. | Official Jellyfin plugin catalog and repository guidance checked 2026-08-05 | Open Jellyfin Plugin Catalog submit page (new tab)Jellyfin Plugin Catalog details |
| 82 | 68 | Knowledge Commons / CORE | hcommons.org | Developer registries | Free | Quick | Medium | Verified live | Create a truthful scholarly profile and deposit an original privacy, accessibility, or digital-humanities paper or teaching resource with its related your tool URL. | Work must genuinely serve scholarship or pedagogy; upload only rights-cleared material, not sales copy. | 2026-08-05 — https://registry.hcommons.org/registry/co_petitions/start/coef%3A158 | Open Knowledge Commons / CORE submit page (new tab)Knowledge Commons / CORE details |
| 83 | 68 | LineZine | linezine.com | Software directories | Free | Quick | Medium | Verified live | Choose the free listing or purchase a dedicated your tool product page. | Free clicks are redirected/nofollow; paid option provides a dedicated dofollow page. | https://linezine.com/list-your-tool | Open LineZine submit page (new tab)LineZine details |
| 84 | 68 | LuaRocks | luarocks.org | Developer registries | Free | Quick | Medium | Verified live | Create a useful Lua client or helper, publish its rockspec and include homepage, license and source links. | Only publish a working Lua module with correct dependencies and versioned source archives. | Official LuaRocks page checked 2026-07-30 | Open LuaRocks submit page (new tab)LuaRocks details |
| 85 | 68 | Mastra Templates and Integrations | mastra.ai | Marketplaces and app stores | Free | Quick | Medium | Verified live | Create a working public your tool integration or reusable Mastra template with repository and documentation for review and cross-listing. | A working integration and public repository are required; documentation listing, partner placement, and co-marketing are not guaranteed. | 2026-08-05 | Open Mastra Templates and Integrations submit page (new tab)Mastra Templates and Integrations details |
| 86 | 68 | napari Hub | napari-hub.org | Marketplaces and app stores | Free | Quick | Medium | Verified live | Create a useful npe2 napari plugin for image privacy, metadata inspection or scientific redaction, publish it correctly on PyPI and let the official hub index its project metadata. | Must be a working napari plugin with correct manifest, classifiers, tests and PyPI metadata; directory pages expose project details but are not an endorsement. | 2026-08-05 | Open napari Hub submit page (new tab)napari Hub details |
| 87 | 68 | Participedia | participedia.net | Other opportunities | Free | Quick | Medium | Verified live | Document a real participatory public-decision deployment as a Case, Method or Organization entry with evaluations and project URL. | Community knowledge base, not a product directory; cite credible sources and show genuine participation outcomes. | 2026-08-05 — https://participedia.net/getting-started | Open Participedia submit page (new tab)Participedia details |
| 88 | 68 | pckt | pckt.blog | Publishing platforms | Free | Quick | Medium | Verified live | Create a genuine your tool publication and post substantial product research, tutorials or engineering notes. | Sign-in is required; publish original long-form work rather than a link-only profile. | 2026-08-04 | Open pckt submit page (new tab)pckt details |
| 89 | 68 | ProcessWire Modules Directory | processwire.com | Other opportunities | Free | Quick | Medium | Verified live | Build a ProcessWire admin module for external URL, metadata, accessibility or security audits, register as a module author and submit it to the official directory. | Author login required; avoid duplicating existing SEO modules and provide a specific external-audit workflow with maintained source, documentation and support. | 2026-08-05 | Open ProcessWire Modules Directory submit page (new tab)ProcessWire Modules Directory details |
| 90 | 68 | RabbitMQ Community Plugins | rabbitmq.com | Marketplaces and app stores | Free | Quick | Medium | Verified live | Build a stable open-source RabbitMQ plugin for a legitimate your tool security/privacy workflow and ask the RabbitMQ team to list it. | Must be a real Erlang/OTP plugin, safely supervised, tested against supported RabbitMQ releases, distributed as an .ez artifact and maintained by its author. | 2026-08-05 — https://www.rabbitmq.com/plugin-development | Open RabbitMQ Community Plugins submit page (new tab)RabbitMQ Community Plugins details |
| 91 | 68 | Research Software Directory | research-software-directory.org | Software directories | Free | Quick | Medium | Verified live | Request access, then publish a rich your tool research-software page with source, getting-started URL, DOI, contributors, and research mentions. | Only for genuine research software with evidence and public source or releases; truthful affiliation and ORCID information are required. | 2026-08-05 — https://research-software-directory.org/documentation/users/adding-software/ | Open Research Software Directory submit page (new tab)Research Software Directory details |
| 92 | 68 | Roadie Backstage Plugins Directory | roadie.io | Marketplaces and app stores | Free | Quick | Medium | Verified live | Publish a substantial open-source Backstage plugin that integrates your tool privacy/security checks, then request inclusion if the directory does not discover it. | Plugin must be installable, documented and maintained; public directory inclusion is curated/indexed and not guaranteed merely by publishing an npm package. | 2026-08-05 — https://roadie.io/docs/details/requesting-plugins/ | Open Roadie Backstage Plugins Directory submit page (new tab)Roadie Backstage Plugins Directory details |
| 93 | 68 | SciCrunch RRID Resource Portal | scicrunch.org | Other opportunities | Free | Quick | Medium | Verified live | Register a stable, genuinely research-used your tool software, service, or database with accurate maintainer and version metadata. | Must be a persistent research resource; acceptance or identifier assignment is curated and not intended for promotional listings. | 2026-08-05 — https://scicrunch.org/resources/about/resource?form=Resource&rel=26 | Open SciCrunch RRID Resource Portal submit page (new tab)SciCrunch RRID Resource Portal details |
| 94 | 68 | Silverstripe Add-ons | addons.silverstripe.org | Marketplaces and app stores | Free | Quick | Medium | Verified live | Build a maintained Silverstripe CMS module for a useful your tool privacy, accessibility or URL-audit workflow, publish it with correct Composer metadata and submit it to the public directory. | Module must be open and installable, follow Silverstripe conventions, document usage and compatibility, use tagged releases and accept ongoing code-quality and update responsibility. | 2026-08-05 | Open Silverstripe Add-ons submit page (new tab)Silverstripe Add-ons details |
| 95 | 68 | Sketchfab | sketchfab.com | Profiles and entities | Free | Quick | Medium | Verified live | Publish an original educational 3D asset connected to a real your tool tutorial, with accurate credits and a contextual project link in the description. | Upload only content you own or can license; descriptions should explain the model rather than serve as link ads, and UGC links may be nofollow. | 2026-08-03 | Open Sketchfab submit page (new tab)Sketchfab details |
| 96 | 68 | Tolodora | tolodora.com | Software directories | Free | Quick | Medium | Verified live | Add your tool as a SaaS or online service with its official URL. | Use accurate categories and avoid duplicate or promotional spam entries. | https://tolodora.com/ | Open Tolodora submit page (new tab)Tolodora details |
| 97 | 68 | Ulauncher Extensions | ulauncher.io | Launch platforms | Free | Quick | Medium | Verified live | Build a Python keyword extension that runs useful your tool URL, domain or metadata checks and displays concise results, then submit its public repository through the official form. | Requires GitHub authentication and the current Ulauncher extension API; secure credentials and return useful in-launcher output instead of merely opening a marketing page. | 2026-08-05 | Open Ulauncher Extensions submit page (new tab)Ulauncher Extensions details |
| 98 | 68 | Venture by MyVenture | myventure.dev | Startup directories | Free | Quick | Medium | Verified live | Create a founder profile, add your tool as a startup and share authentic milestones or metrics. | Only share truthful metrics; keep the profile updated instead of using it as a one-link shell. | 2026-08-03 | Open Venture by MyVenture submit page (new tab)Venture by MyVenture details |
| 99 | 68 | Vim Online Scripts | vim.org | Marketplaces and app stores | Free | Quick | Medium | Verified live | Build and upload a genuinely useful Vim privacy or secret-checking plugin with your tool documentation and a relevant project link. | Only publish a working original script; follow Vim script upload rules and avoid keyword-stuffed descriptions. | 2026-08-05 | Open Vim Online Scripts submit page (new tab)Vim Online Scripts details |
| 100 | 68 | WebThings Add-ons | webthings.io | Marketplaces and app stores | Free | Quick | Medium | Verified live | Build a WebThings adapter, notifier, or interface extension for local privacy or device-risk controls, follow the add-on APIs, test on Gateway 2.x, and publish it to the directory. | Must be an actual WebThings add-on, use unique non-misleading branding, document device/data access, and account for current 2.x compatibility. | Official WebThings add-on directory and development guidance checked 2026-08-05 | Open WebThings Add-ons submit page (new tab)WebThings Add-ons 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.