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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 | 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 |
| 2 | 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 |
| 3 | 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 |
| 4 | 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 |
| 5 | 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 |
| 6 | 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 |
| 7 | 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 |
| 8 | 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 |
| 9 | 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 |
| 10 | 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 |
| 11 | 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 |
| 12 | 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 |
| 13 | 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 |
| 14 | 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 |
| 15 | 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 |
| 16 | 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 |
| 17 | 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 |
| 18 | 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 |
| 19 | 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 |
| 20 | 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 |
| 21 | 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 |
| 22 | 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 |
| 23 | 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 |
| 24 | 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 |
| 25 | 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 |
| 26 | 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 |
| 27 | 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 |
| 28 | 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 |
| 29 | 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 |
| 30 | 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 |
| 31 | 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 |
| 32 | 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 |
| 33 | 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 |
| 34 | 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 |
| 35 | 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 |
| 36 | 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 |
| 37 | 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 |
| 38 | 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 |
| 39 | 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 |
| 40 | 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 |
| 41 | 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 |
| 42 | 66 | 3D Slicer Extensions Catalog | extensions.slicer.org | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Build and test a Slicer extension for medical-image de-identification, metadata inspection or privacy validation, then add its .s4ext metadata to ExtensionIndex by pull request. | Medical/scientific imaging relevance is mandatory; automated platform builds must pass and health/privacy claims need responsible validation. | 2026-08-05 | Open 3D Slicer Extensions Catalog submit page (new tab)3D Slicer Extensions Catalog details |
| 43 | 66 | ADPList | adplist.org | Review platforms | Free | Moderate | Medium | Verified live | Apply only if the founder or team member has real design/engineering leadership experience and intends to provide genuine mentoring, then add an accurate personal website/profile reference. | Mentor approval criteria apply and a public profile must represent a real person, expertise, availability, and service—not a company backlink. Deliver actual mentorship and disclose AltFTool affiliation. Acceptance timing, profile discovery, external-link display, and rel/follow status are not guaranteed. | 2026-08-03 | Open ADPList submit page (new tab)ADPList details |
| 44 | 66 | Alpine Linux Packages | pkgs.alpinelinux.org | Developer registries | Free | Moderate | Medium | Verified live | Package a stable your tool CLI or self-hosted helper as a tested APKBUILD, add it under Alpine testing and submit an aports merge request with accurate project metadata. | A web wrapper will not qualify; software must run usefully on Alpine, pass lint/build checks and be maintained through review and repository promotion. | 2026-08-05 | Open Alpine Linux Packages submit page (new tab)Alpine Linux Packages details |
| 45 | 66 | Apps and Reports | appsandreports.com | Software directories | Free | Moderate | Medium | Verified live | Register as your tool vendor and add its software/service profile. | Business and product information must be verifiable. | https://www.appsandreports.com/vendor-registration | Open Apps and Reports submit page (new tab)Apps and Reports details |
| 46 | 66 | ArtStation | artstation.com | Other opportunities | Free | Moderate | Medium | Verified live | Publish an original UI/UX visual case study showing your tool interaction design, accessibility states, and design process, with a contextual project URL. | Use ArtStation only if there is substantial original visual/design work, complete project metadata, and rights-cleared assets; it is not a generic SaaS listing. Disclose the creator's relationship to AltFTool. Projects and links are UGC, subject to platform moderation, and neither discovery nor followed-link status is guaranteed. | 2026-08-03 | Open ArtStation submit page (new tab)ArtStation details |
| 47 | 66 | balenaHub | hub.balena.io | Other opportunities | Free | Moderate | Medium | Verified live | Build a deployable edge privacy utility or reusable block, add balena.yml metadata, public source, configuration and multi-device tests, then publish it on balenaHub. | Must be a real balena app or block, link a GitHub repository, avoid embedded secrets, support claimed architectures, and maintain deployability. | Official balena apps, blocks, and balenaHub publishing docs checked 2026-08-05 | Open balenaHub submit page (new tab)balenaHub details |
| 48 | 66 | Charmhub | charmhub.io | Other opportunities | Free | Moderate | Medium | Verified live | Package a maintained self-hosted your tool deployment as a Juju charm with canonical documentation, source, and support links. | Register the charm name, upload and release a tested charm; formal community review is required for search visibility. | Official Charmcraft charm management documentation checked 2026-08-07 | Open Charmhub submit page (new tab)Charmhub details |
| 49 | 66 | Cinnamon Spices | cinnamon-spices.linuxmint.com | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Build a maintained Cinnamon applet that launches or monitors a useful local your tool privacy workflow and submit it by pull request. | Must follow the UUID/file structure, include info.json, screenshot and functional code, pass validate-spice, contain no malicious behavior, and pass team review. | 2026-08-05 — https://github.com/linuxmint/cinnamon-spices-applets | Open Cinnamon Spices submit page (new tab)Cinnamon Spices details |
| 50 | 66 | CK-12 FlexBooks | ck12.org | Other opportunities | Free | Moderate | Medium | Verified live | Create an age-appropriate digital-citizenship or privacy FlexBook chapter with practical your tool exercises. | Must be substantive K-12 educational content with correct authorship; do not create a product-only page. | 2026-08-05 — https://help.ck12.org/hc/en-us/articles/200448244-How-to-Customize-a-FlexBook-Textbook-or-Read-Modality | Open CK-12 FlexBooks submit page (new tab)CK-12 FlexBooks details |
| 51 | 66 | Codidact Power Users | codidact.org | Software directories | Free | Moderate | Medium | Verified live | Answer real end-user software or privacy questions in depth and reference a specific your tool page only when it materially completes the answer. | Disclose affiliation; irrelevant or undisclosed product promotion is spam, and manufactured questions or generic link drops are prohibited. | Official Codidact signup and help guidance checked 2026-08-07 | Open Codidact Power Users submit page (new tab)Codidact Power Users details |
| 52 | 66 | Coolify One-Click Services | coolify.io | Other opportunities | Free | Moderate | Medium | Verified live | Create and fully test an your tool Docker Compose service template, add metadata, logo, and documentation, then submit it to Coolify's next branch. | The upstream Git repository currently needs at least 1,000 stars; template, secrets, storage, port, docs, and review rules apply. | Official Coolify service-contribution guide checked 2026-08-05 | Open Coolify One-Click Services submit page (new tab)Coolify One-Click Services details |
| 53 | 66 | Creative Fabrica | creativefabrica.com | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Apply as a designer and publish an original template, icon pack or printable that genuinely complements an your tool workflow. | Products are reviewed and must be owned and licensed by the seller; personal contact details and unauthorized external links are restricted in product listings. | 2026-08-03 | Open Creative Fabrica submit page (new tab)Creative Fabrica details |
| 54 | 66 | Creative Market | creativemarket.com | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Apply with a strong portfolio and sell an original your tool-compatible template or design kit, using permitted shop branding and product documentation. | Shop approval requires a portfolio; products must be original, properly licensed and commercially useful. External-link placement is controlled by marketplace rules. | 2026-08-03 | Open Creative Market submit page (new tab)Creative Market details |
| 55 | 66 | dbt Package Hub | hub.getdbt.com | Developer registries | Free | Moderate | Medium | Verified live | Build a useful dbt package for privacy classification, redaction tests or data-governance macros and add it to the Hub index by pull request. | Must be a functional versioned dbt package with accurate package metadata, public source and releases; Hub index PR and automated compatibility checks apply. | 2026-08-05 — https://github.com/dbt-labs/hub.getdbt.com | Open dbt Package Hub submit page (new tab)dbt Package Hub details |
| 56 | 66 | devRant | devrant.com | Profiles and entities | Free | Moderate | Medium | Verified live | Participate as a real developer with original lessons and honest build stories; reference your tool only if a specific discussion genuinely calls for the working example. | devRant treats accounts whose posts/comments mainly consist of links, duplicates, misleading identities, random comments, or purchased interactions as spam. Do not use a business name to mislead, disclose affiliation, and contribute without expecting a backlink. All links/posts are moderated UGC with no indexing or followed-link guarantee. | 2026-08-03 | Open devRant submit page (new tab)devRant details |
| 57 | 66 | DevShowcase | devshowcase.dev | Design galleries | Free | Moderate | Medium | Verified live | Sign in with GitHub or Google and add your tool as a real portfolio project with tech stack. | Use an authentic developer identity and substantive project information. | 2026-08-03 | Open DevShowcase submit page (new tab)DevShowcase details |
| 58 | 66 | DHIS2 App Hub | apps.dhis2.org | Software directories | Free | Moderate | Medium | Verified live | Build a generic DHIS2 health-data de-identification or permission-audit app and submit it to App Hub for core-team review. | Must be useful across DHIS2 implementations, open source, documented, secure, performant, and free of advertising or hidden collection. | Official DHIS2 App Hub publishing and review guidelines checked 2026-08-05 | Open DHIS2 App Hub submit page (new tab)DHIS2 App Hub details |
| 59 | 66 | Discourse Meta | discourse.org | Profiles and entities | Free | Moderate | Medium | Verified live | Use a real developer profile and contribute tested solutions on Discourse integrations, accessibility, or privacy only when the team has genuine implementation experience. | Meta is for improving Discourse discussions, not promoting AltFTool; spam, cross-posting, work solicitation outside Marketplace, and pasted AI replies are prohibited. Link only when essential, disclose affiliation, and never sign posts with promotional copy. Posts/profile links are moderated UGC with no permanence or followed-link guarantee. | 2026-08-03 | Open Discourse Meta submit page (new tab)Discourse Meta details |
| 60 | 66 | Ecwid App Market | ecwid.com | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Build an your tool Ecwid app, propose it, sign the partner agreement, and submit it for review with website and support links. | Requires a real public app, partner contract, review, support, and eligible legal and payments setup; listing is not guaranteed. | Official Ecwid public app overview checked 2026-08-07 | Open Ecwid App Market submit page (new tab)Ecwid App Market details |
| 61 | 66 | EdTech Books | edtechbooks.org | Publishing platforms | Free | Moderate | Medium | Verified live | Create a structured open handbook on digital privacy or accessibility with reproducible your tool labs. | Use the publication workflow for a substantive book or proceedings item, clear all rights, and avoid thin SEO content. | 2026-08-05 — https://edtechbooks.s3.us-west-2.amazonaws.com/pdfs/40/3135.pdf | Open EdTech Books submit page (new tab)EdTech Books details |
| 62 | 66 | ELIXIR TeSS | tess.elixir-europe.org | Other opportunities | Free | Moderate | Medium | Verified live | Register a substantive life-science privacy, medical-data de-identification, or research-data training resource hosted by your tool. | Content must be relevant to life sciences or an adjacent field; account and accurate metadata required, while harvested providers need admin approval. | 2026-08-05 — https://tess.elixir-europe.org/about/registering | Open ELIXIR TeSS submit page (new tab)ELIXIR TeSS details |
| 63 | 66 | Espanso Hub | espanso.org | Developer registries | Free | Moderate | Medium | Verified live | Create a genuinely useful package of tested security-header, HTML-meta, JSON-LD and webhook snippets with your tool validation examples, then submit it to the official Hub. | Every package receives CI and human review, with extra scrutiny for scripts; avoid promotional expansions and any shell action that could harm users. | 2026-08-05 | Open Espanso Hub submit page (new tab)Espanso Hub details |
| 64 | 66 | EVERSE Research Software Quality Kit | everse.software | Software directories | Free | Moderate | Medium | Verified live | Discuss a substantive your tool-backed research-software quality task or resource with the Editorial Board, then contribute through its approved workflow. | Significant content should be discussed first; contribution must teach reusable practice rather than advertise. | Official RSQKit contribution and editorial guides checked 2026-08-05 | Open EVERSE Research Software Quality Kit submit page (new tab)EVERSE Research Software Quality Kit details |
| 65 | 66 | FAIRsharing | fairsharing.org | Other opportunities | Free | Moderate | Medium | Verified live | Submit a genuine your tool-maintained database, reusable reporting standard, or data policy with complete stewardship metadata. | Generic software and individual datasets are out of scope; record type must match FAIRsharing scope and is curated. | 2026-08-05 — https://fairsharing.org/new/ | Open FAIRsharing submit page (new tab)FAIRsharing details |
| 66 | 66 | Fedora COPR | copr.fedorainfracloud.org | Developer registries | Free | Moderate | Medium | Verified live | Create a COPR project, build maintained RPMs and add the official your tool homepage and package documentation. | COPR is a build service rather than Fedora's main repository; provide legitimate source RPMs and support them. | Official Fedora Developer Portal checked 2026-07-30 | Open Fedora COPR submit page (new tab)Fedora COPR details |
| 67 | 66 | FreeCAD Addons | freecad.org | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Build an open-source FreeCAD privacy/metadata or document-cleanup workbench, add package.xml metadata, and submit it to the curated Addons index. | Must be a real installable FreeCAD addon with supported license, repository metadata, docs and compatibility; catalog acceptance/review required. | 2026-08-05 — https://github.com/FreeCAD/FreeCAD-macros | Open FreeCAD Addons submit page (new tab)FreeCAD Addons details |
| 68 | 66 | Glide Template Store | glideapps.com | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Publish a substantive Glide template for privacy-safe records, evidence organization, or accessibility audits and link its your tool documentation where permitted. | The template must be original, reusable, polished, documented, privacy-safe, and pass review; a promotional shell will not qualify. | Official Glide template publishing guide and Template Store terms checked 2026-08-07 | Open Glide Template Store submit page (new tab)Glide Template Store details |
| 69 | 66 | GNOME Shell Extensions | extensions.gnome.org | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Create a narrowly useful GNOME Shell extension, provide metadata and homepage or source information, and submit it for review. | Must be GNOME Shell-specific, safe and policy-compliant; manual review queues can be slow. | Official GNOME extension review page checked 2026-07-30 | Open GNOME Shell Extensions submit page (new tab)GNOME Shell Extensions details |
| 70 | 66 | GovStack | govstack.global | Other opportunities | Free | Moderate | Medium | Verified live | Join a working group and contribute a substantive building-block specification, use case, reference implementation or new proposal. | Needs sustained expert contribution; Apache-2.0/IP terms apply; link must be directly relevant to the implementation. | 2026-08-05 — https://specs.govstack.global/overview/25q2-1/contributing | Open GovStack submit page (new tab)GovStack details |
| 71 | 66 | Gradle Plugin Portal | gradle.org | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Ship a genuinely useful Gradle plugin for an your tool developer check such as secret, licence, or configuration auditing; publish with your tool documentation and support URLs. | Initial version is manually reviewed; the plugin needs real functionality, broad usefulness, public documentation, and accurate compatibility declarations. | Official Gradle Plugin Portal publishing documentation checked 2026-08-07 | Open Gradle Plugin Portal submit page (new tab)Gradle Plugin Portal details |
| 72 | 66 | GRASS GIS Addons | grass.osgeo.org | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Build a GRASS GIS add-on for location anonymization, sensitive-zone generalization, or privacy-safe geospatial export, include docs and tests, then submit it to the official add-ons repository. | Must provide genuine GRASS functionality, follow programming and licensing rules, include a manual page and tests, and pass build and maintainer review. | Official GRASS contribution page and current add-ons documentation checked 2026-08-05 | Open GRASS GIS Addons submit page (new tab)GRASS GIS Addons details |
| 73 | 66 | HAL Open Science | hal.science | Software directories | Free | Moderate | Medium | Verified live | Deposit a research-level open-source your tool component or related preprint/report with accurate project and source links. | Research-software or scholarly output only; accurate authorship, affiliation, rights, licence and metadata; deposits may be reviewed and cannot be self-deleted after acceptance. | 2026-08-05 — https://doc.hal.science/en/deposer/deposer-le-code-source/ | Open HAL Open Science submit page (new tab)HAL Open Science details |
| 74 | 66 | Humanitarian Data Exchange | data.humdata.org | Other opportunities | Free | Moderate | Medium | Verified live | Join an approved organization and publish a documented humanitarian privacy/safety dataset with licence and responsible-access settings. | OCHA reviews organization identity and scope; data must be humanitarian, and sensitive data needs responsible handling; a PDF alone is not a dataset. | 2026-08-05 — https://centre.humdata.org/ufaqs/how-do-i-share-data-on-hdx/ | Open Humanitarian Data Exchange submit page (new tab)Humanitarian Data Exchange details |
| 75 | 66 | Icon-Icons | icon-icons.com | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Apply as the actual designer and publish a manually designed, consistent privacy or accessibility icon pack with an accurate public author profile. | Approval and full rights are required; AI-generated icons are not accepted, and payout uses supported processors. | Official Icon-Icons seller and contributor terms checked 2026-08-07 | Open Icon-Icons submit page (new tab)Icon-Icons details |
| 76 | 66 | IndieForge | indie-forge.net | Startup directories | Free | Moderate | Medium | Verified live | Create a truthful founder profile, showcase your tool, and participate consistently in relevant discussions. | Value comes from ongoing genuine participation; one-off self-promotional link drops are inappropriate. | 2026-08-05 official login/community pages | Open IndieForge submit page (new tab)IndieForge details |
| 77 | 66 | Journal of Open Source Education | jose.theoj.org | Software directories | Free | Moderate | Medium | Verified live | Package a complete computational privacy or accessibility learning module and submit its reusable artifact plus Markdown paper. | Artifact must be feature-complete, immediately reusable, openly licensed, documented, and demonstrate teaching value. | 2026-08-05 — https://openjournals.readthedocs.io/en/jose/submitting.html | Open Journal of Open Source Education submit page (new tab)Journal of Open Source Education details |
| 78 | 66 | JS Bin | jsbin.com | Design galleries | Free | Moderate | Medium | Verified live | Create a focused educational demo for one your tool technique and share the public bin from an authentic profile. | Public bins are MIT-licensed and bots are prohibited; publish only compatible original code and create it manually. | Official JS Bin getting-started and legal pages checked 2026-08-07 | Open JS Bin submit page (new tab)JS Bin details |
| 79 | 66 | KDE Store | store.kde.org | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Publish a genuinely useful KDE or Plasma asset or integration with accurate project and homepage details. | Content must fit a KDE Store category, respect licenses and trademarks, and pass moderation. | Official KDE Store upload form checked 2026-07-30 | Open KDE Store submit page (new tab)KDE Store details |
| 80 | 66 | Launch.community | launch.community | Launch platforms | Free | Moderate | Medium | Verified live | List only a genuine upcoming your tool major release with date and waitlist information. | Requires Google sign-in and moderation; use only for a real upcoming release, not an evergreen listing. | 2026-08-05 official submit page | Open Launch.community submit page (new tab)Launch.community details |
| 81 | 66 | ListYourTool | listyourtool.com | AI tool directories | Free | Moderate | Medium | Verified live | Submit a concise your tool profile with its best differentiating utilities. | Working public tool required; reviewed before publication. | https://www.listyourtool.com/submit-tool | Open ListYourTool submit page (new tab)ListYourTool details |
| 82 | 66 | MentorCruise | mentorcruise.com | Review platforms | Free | Moderate | Medium | Verified live | Have a qualified founder or senior team member apply as a privacy, accessibility, product, or engineering mentor and add your tool only as truthful experience/personal-site evidence. | Applications are manually reviewed, typically within 14 days, and official help says fewer than 10% are accepted; a real headshot, bio, LinkedIn, and relevant expertise are required. The profile must support actual paid mentoring, not link placement. External links are profile UGC with no approval, traffic, or followed-link guarantee. | 2026-08-03 | Open MentorCruise submit page (new tab)MentorCruise details |
| 83 | 66 | MISP Modules | misp-project.org | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Build a safe MISP import, export, hover, expansion, or workflow module for a legitimate privacy or scam-analysis use case, document it, test it, and submit a PR. | Must implement introspection, handler, version metadata, configuration and error handling correctly; never transmit event data without explicit administrator control. | Official MISP Modules contribution documentation checked 2026-08-05 | Open MISP Modules submit page (new tab)MISP Modules details |
| 84 | 66 | MyFreeAI Source | myfreeaisource.com | AI tool directories | Free | Moderate | Medium | Verified live | Submit one genuinely AI-powered your tool route with its free-access details, official URL, privacy terms and relationship disclosure. | Only free, freemium, open-source or free-trial AI tools fit; submissions are saved as drafts and reviewed, so do not submit the non-AI umbrella product as AI. | 2026-08-03 • https://myfreeaisource.com/submit-ai-tool/ | Open MyFreeAI Source submit page (new tab)MyFreeAI Source details |
| 85 | 66 | Netdata Integrations | netdata.cloud | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Contribute a working collector or alert integration for measurable your tool service/privacy signals with metadata and documentation. | Requires tested production-quality collector code, integration metadata, docs and alerts where appropriate; upstream review determines inclusion. | 2026-08-05 — https://learn.netdata.cloud/docs/developer-and-contributor-corner/contributing | Open Netdata Integrations submit page (new tab)Netdata Integrations details |
| 86 | 66 | Nmap NSE Documentation | nmap.org | Review platforms | Free | Moderate | Medium | Verified live | Develop a safe, useful Nmap NSE script related to an your tool security check and include accurate author or homepage metadata. | Script must be original, valuable, documented, tested, properly licensed, and accepted into Nmap; never add intrusive behavior merely for exposure. | 2026-08-05 — https://nmap.org/book/nse-script-format.html | Open Nmap NSE Documentation submit page (new tab)Nmap NSE Documentation details |
| 87 | 66 | Octopus | octopus.ac | Other opportunities | Free | Moderate | Medium | Verified live | Use ORCID to publish genuine research stages—problem, method, data or analysis—with contextual your tool code/data links. | Research record only, not marketing; stages must connect accurately and follow licensing, authorship and research-ethics rules. | 2026-08-05 — https://www.octopus.ac/ | Open Octopus submit page (new tab)Octopus details |
| 88 | 66 | Omeka S Modules | omeka.org | Other opportunities | Free | Moderate | Medium | Verified live | Create a maintained Omeka S module for collection metadata privacy, accessibility or link auditing, package it correctly and register the add-on with project and author links. | Must be a functional Omeka module with compatible releases, clear documentation and support; directory review does not constitute a security endorsement. | 2026-08-05 | Open Omeka S Modules submit page (new tab)Omeka S Modules details |
| 89 | 66 | Open Research Knowledge Graph | orkg.org | Other opportunities | Free | Moderate | Medium | Verified live | Create a rigorous structured comparison of published privacy, redaction, or accessibility studies and include your tool only when supported by research. | Model at least two scholarly contributions accurately, cite sources, avoid self-serving comparisons, and accept permanent versioning. | 2026-08-05 — https://academy.orkg.org/courses/comparison-course.html | Open Open Research Knowledge Graph submit page (new tab)Open Research Knowledge Graph details |
| 90 | 66 | Open Source Observer | opensource.observer | Developer registries | Free | Moderate | Medium | Verified live | Open-source an your tool component, then add its website and repositories through the official oss-directory PR. | Requires maintained public artifacts and a reviewable PR; no placeholder repositories. | 2026-08-03 | Open Open Source Observer submit page (new tab)Open Source Observer details |
| 91 | 66 | OpenCTI Integrations Library | opencti.io | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Build a secure OpenCTI connector that imports or exports a legitimate your tool-supported CTI workflow, add tests and documentation, and contribute it for library integration. | Must follow connector architecture, licensing, CI, release, data-quality, and security requirements; review determines library inclusion. | Official OpenCTI connectors repository and development docs checked 2026-08-05 | Open OpenCTI Integrations Library submit page (new tab)OpenCTI Integrations Library details |
| 92 | 66 | OpenResty Package Manager | opm.openresty.org | Developer registries | Free | Moderate | Medium | Verified live | Publish an open-source Lua/OpenResty package that integrates an your tool privacy or security workflow and includes honest package metadata. | Package must use an accepted open-source licence, valid dist.ini metadata, GitHub identity verification, versioning, and the official opm upload process. | 2026-08-05 — https://opm.openresty.org/docs | Open OpenResty Package Manager submit page (new tab)OpenResty Package Manager details |
| 93 | 66 | OpenSearch Catalog | opensearch.org | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Contribute a functional privacy/security integration, dashboard or ingestion-to-visualization content pack through the OpenSearch Catalog workflow. | Artifact must match the catalog schema, be useful to OpenSearch users, include accurate docs/source metadata, use Apache-2.0-compatible contribution terms and pass review. | 2026-08-05 — https://github.com/opensearch-project/opensearch-catalog | Open OpenSearch Catalog submit page (new tab)OpenSearch Catalog details |
| 94 | 66 | OSF | osf.io | Other opportunities | Free | Moderate | Medium | Verified live | Create a public reproducibility project for your tool research, datasets, test methods, or privacy benchmarks and link the genuine project/site. | Best for real research workflows. Projects start private; review files and metadata before making them public. | https://help.osf.io/article/285-control-your-privacy-settings | Open OSF submit page (new tab)OSF details |
| 95 | 66 | ownCloud Marketplace | marketplace.owncloud.com | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Build a useful ownCloud app that invokes or embeds an your tool privacy, document or URL-audit workflow, code-sign it and publish it through the official marketplace. | Check for an existing similar app first; use an open version-controlled repository, compatible licence and complete metadata. Marketplace upload requires ownCloud code signing, and new apps begin with experimental trust. | 2026-08-05 | Open ownCloud Marketplace submit page (new tab)ownCloud Marketplace details |
| 96 | 66 | Particle Community Libraries | particle.io | Publishing platforms | Free | Moderate | Medium | Verified live | Build and test a Particle Device OS privacy, local-processing, or credential-safety library with examples, license, README, and repository URL, then publish it via the CLI. | Library name must be unique; public versions are immutable, relevant hardware builds must pass, examples and license are required, and Verified status needs extra review. | Official Particle library contribution and CLI docs checked 2026-08-05 | Open Particle Community Libraries submit page (new tab)Particle Community Libraries details |
| 97 | 66 | PKP Plugin Gallery | pkp.sfu.ca | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Develop an OJS/OMP/OPS plugin for a genuine accessibility, privacy or publication-validation workflow, release it with gallery metadata and submit through PKP's review flow. | Requires supported platform versions, real publishing functionality, compatible licensing, maintained releases and correct gallery packaging. | 2026-08-05 | Open PKP Plugin Gallery submit page (new tab)PKP Plugin Gallery details |
| 98 | 66 | Plunker | plnkr.co | Design galleries | Free | Moderate | Medium | Verified live | Build a working mini-project showing an your tool browser-side feature and publish its indexed share page with useful documentation. | Keep the project executable, original, educational, and free of credentials or user data. | Official Plunker feature documentation checked 2026-08-07 | Open Plunker submit page (new tab)Plunker details |
| 99 | 66 | portfolio.dev | portfolio.dev | Other opportunities | Free | Moderate | Medium | Verified live | Create a public case-study portfolio and add your tool with screenshots, live demo and build rationale. | Publish a genuine project case study rather than a thin promotional card. | 2026-08-03 | Open portfolio.dev submit page (new tab)portfolio.dev details |
| 100 | 66 | Product Launchpad | productlaunchpad.app | Launch platforms | Free | Moderate | Medium | Verified live | Submit a complete your tool launch profile, then answer relevant discussions authentically. | Email sign-in and moderation; forum activity must be useful, not link drops; X/GitHub verification may apply. | 2026-08-05 official submit page | Open Product Launchpad submit page (new tab)Product Launchpad 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.