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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 | Glama MCP Directory | glama.ai | Other opportunities | Free | Quick | Do first | Not submitted | Deploy a maintained your tool MCP server from GitHub, Docker, npm, or PyPI, verify maintainer ownership, and switch it public only after production testing. | Hosted servers are private by default; public listing requires a real working server, and ranking or backlink attributes remain platform-controlled. | 2026-08-03 | Open Glama MCP Directory submit page (new tab)Glama MCP Directory details |
| 2 | 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 |
| 3 | 98 | Genially | genially.com | Other opportunities | Free | Moderate | Do first | Verified live | Create an original interactive your tool privacy or accessibility guide and add relevant external actions to cited live tools. | Public work must be original and useful; community submissions become reusable, and student seats cannot publish publicly. | 2026-08-04 | Open Genially submit page (new tab)Genially details |
| 4 | 98 | Open Source Technology Improvement Fund | ostif.org | Other opportunities | Free | Moderate | Do first | Live, conditional | Request an audit for a mature open-source your tool security component, providing maintainer contacts, architecture, threat model, scope, tests, and a remediation commitment. | Intended for real open-source projects able to collaborate throughout scoping, audit, fixes, disclosure, and publication of the final report; selection and funding are not guaranteed. | 2026-08-03 | Open Open Source Technology Improvement Fund submit page (new tab)Open Source Technology Improvement Fund details |
| 5 | 98 | Spreaker | spreaker.com | Other opportunities | Free | Moderate | Do first | Live, conditional | Create or import a genuine your tool show, keep it public, set its official Website field and publish useful episodes. | Correct ownership and original/licensed audio are required; no promotional shell podcast. | 2026-08-04 | Open Spreaker submit page (new tab)Spreaker details |
| 6 | 95 | Educative | educative.io | Other opportunities | Free | Involved | Do first | Verified live | Propose a text-based, interactive course on web privacy, security headers, local-first tools, or accessible frontend testing, with practical code exercises and clear outcomes. | Applicants need real subject expertise and clear teaching ability. The outline, lessons, code, and claims receive Author Success, technical, and editorial review; the course must teach independently of AltFTool promotion. | 2026-08-03 | Open Educative submit page (new tab)Educative details |
| 7 | 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 |
| 8 | 86 | APIList.fun | apilist.fun | Other opportunities | Free | Quick | High | Live, conditional | Recommend an official your tool API with its documentation URL, concise Markdown description, category, and technical details. | Submit only an active public API with accurate auth, SSL, request, and response information. | 2026-08-05 | Open APIList.fun submit page (new tab)APIList.fun details |
| 9 | 86 | APIs.guru OpenAPI Directory | apis.guru | Other opportunities | Free | Quick | High | Live, conditional | When your tool exposes a stable public API, host an official OpenAPI definition at a permanent URL and submit it with accurate ownership, category, logo, and metadata. | The API must be public through clearly documented access steps, persistent, independently useful, and described by a valid machine-readable definition. APIs.guru aggregates rather than hosts the specification and automatically rechecks its source, so keep the canonical spec stable and current. | 2026-08-03 | Open APIs.guru OpenAPI Directory submit page (new tab)APIs.guru OpenAPI Directory details |
| 10 | 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 |
| 11 | 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 |
| 12 | 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 |
| 13 | 86 | Goodpods | goodpods.com | Other opportunities | Free | Quick | High | Live, conditional | Search for and claim a real your tool podcast, then keep its RSS-supplied website and episode metadata accurate. | Claim only a show AltFTool owns; authentic podcast content and RSS ownership are required. | 2026-08-04 | Open Goodpods submit page (new tab)Goodpods details |
| 14 | 86 | HSTS Preload List | hstspreload.org | Other opportunities | Free | Quick | High | Not submitted | Audit every your tool subdomain, stage HSTS safely, then submit the base domain only after long-term HTTPS readiness is proven. | Requires a valid certificate, HTTP-to-HTTPS redirect, HTTPS on every subdomain, and HSTS max-age of at least one year with includeSubDomains and preload. Inclusion is difficult and slow to undo, so do not submit before a staged rollout. | 2026-08-03 | Open HSTS Preload List submit page (new tab)HSTS Preload List details |
| 15 | 86 | Listen Notes | listennotes.com | Other opportunities | Free | Quick | High | Live, conditional | Submit a real your tool podcast RSS feed whose show website and episode notes naturally reference relevant tools. | Valid human-made podcast with substantive episodes only; low-quality or link-only feeds are rejected. | 2026-08-04 | Open Listen Notes submit page (new tab)Listen Notes details |
| 16 | 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 |
| 17 | 86 | Player FM | player.fm | Other opportunities | Free | Quick | High | Live, conditional | Submit a genuine your tool podcast RSS feed or Apple Podcasts URL with accurate show-website and episode metadata. | Feed must be public, accessible and contain playable audio enclosures; do not submit a fake link-only feed. | 2026-08-04 | Open Player FM submit page (new tab)Player FM details |
| 18 | 86 | Pocket Casts | pocketcasts.com | Other opportunities | Free | Quick | High | Live, conditional | Submit a real public your tool podcast RSS feed whose metadata and episode notes reference the official site naturally. | Requires a valid public RSS feed and genuine episodes; do not submit a shell or private feed as public. | 2026-08-05 | Open Pocket Casts submit page (new tab)Pocket Casts details |
| 19 | 86 | PulseMCP | pulsemcp.com | Other opportunities | Free | Quick | High | Live, conditional | Submit your tool MCP repository or public server URL, preferably after publishing it to the official MCP Registry. | Registry data is processed periodically; only submit a real repository, server or client. | 2026-08-04 | Open PulseMCP submit page (new tab)PulseMCP details |
| 20 | 86 | PWA Directory | pwa.directory | Other opportunities | Free | Quick | High | Live, conditional | First pass PWA checks, then submit the installable HTTPS app with manifest, service worker, offline behavior, icons, and screenshots. | Requires a valid manifest, registered service worker, useful offline behavior, HTTPS, no broken links, and more than a bare website wrapper. | 2026-08-03 | Open PWA Directory submit page (new tab)PWA Directory details |
| 21 | 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 |
| 22 | 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 |
| 23 | 84 | Amazon Music for Podcasters | podcasters.amazon.com | Other opportunities | Free | Moderate | High | Live, conditional | Submit and verify one genuine your tool podcast feed for distribution on Amazon Music and Audible. | RSS must expose a valid owner email; rights, license, and platform rules apply, and review may take up to one week. | 2026-08-05 | Open Amazon Music for Podcasters submit page (new tab)Amazon Music for Podcasters details |
| 24 | 84 | Bitrise Step Library | bitrise.io | Other opportunities | Free | Moderate | High | Verified live | Build a Bitrise Step that runs your tool secret, privacy, or accessibility checks on explicitly chosen build artifacts. | Provide step.yml, implementation, README, declared inputs and outputs, dependencies, and tests; pass Step Library review. | Official Bitrise custom Step development documentation checked 2026-08-07 | Open Bitrise Step Library submit page (new tab)Bitrise Step Library details |
| 25 | 84 | Castbox | castbox.fm | Other opportunities | Free | Moderate | High | Live, conditional | Add or claim a real your tool podcast in Creator Studio and complete channel, site and episode metadata. | Must own the show and verify access to its RSS email; publish original audio content. | 2026-08-04 | Open Castbox submit page (new tab)Castbox details |
| 26 | 84 | CrowdSec Hub | app.crowdsec.net | Other opportunities | Free | Moderate | High | Verified live | Create a defensive parser, scenario, or collection for a real your tool-supported log source, document and test it, then submit it to CrowdSec Hub. | Must use valid labels, tests, fixtures, documentation, and safe detection logic; CI and maintainer review apply. | Official CrowdSec Hub contribution guide checked 2026-08-05 | Open CrowdSec Hub submit page (new tab)CrowdSec Hub details |
| 27 | 84 | Daggerverse | dagger.io | Other opportunities | Free | Moderate | High | Verified live | Create a TypeScript or Go module that runs your tool web audits in CI and returns machine-readable JSON/SARIF with useful pass/fail thresholds, then publish it to Daggerverse. | Use valid semantic version tags, clear descriptions, tests and hand-written examples; Daggerverse indexes source rather than hosting it, so the module must provide real CI value. | 2026-08-05 | Open Daggerverse submit page (new tab)Daggerverse details |
| 28 | 84 | Indie Makers Hub | indiemakershub.com | Other opportunities | Free | Moderate | High | Verified live | Submit your tool through the official reviewed product form. | Google authentication may be required; complete and relevant submissions only. | 2026-08-05 | Open Indie Makers Hub submit page (new tab)Indie Makers Hub details |
| 29 | 84 | Internet.nl Hall of Fame | internet.nl | Other opportunities | Free | Moderate | High | Not submitted | Run the website and email tests, fix IPv6, DNSSEC, HTTPS, security headers, DMARC/DKIM/SPF, STARTTLS/DANE, and RPKI gaps, then retain a 100% score. | The domain is listed only when it scores 100% in the relevant test; the badge may be used only for the matching domain and only while the score remains 100%. | 2026-08-03 | Open Internet.nl Hall of Fame submit page (new tab)Internet.nl Hall of Fame details |
| 30 | 84 | JS.ORG | js.org | Other opportunities | Free | Moderate | High | Verified live | Create a genuine JavaScript SDK or demo on GitHub Pages and request an appropriate js.org subdomain that links to its official your tool documentation. | The project must be JavaScript-related and useful; spam, phishing and dubious content are prohibited, and a pull-request review is required. | 2026-08-03 | Open JS.ORG submit page (new tab)JS.ORG details |
| 31 | 84 | Langflow Component Bundles | langflow.org | Other opportunities | Free | Moderate | High | Verified live | Contribute an your tool provider bundle with useful privacy or security components and provider documentation links. | Requires production-quality backend components, frontend assets, tests and a reviewed Langflow pull request; generic promotion is rejected. | 2026-08-05 | Open Langflow Component Bundles submit page (new tab)Langflow Component Bundles details |
| 32 | 84 | LinuxLinks | linuxlinks.com | Other opportunities | Free | Moderate | High | Live, conditional | Submit a maintained your tool desktop or CLI utility only after it runs natively on a modern Linux distribution and has a public OSI-approved license and repository. | The program must be open source, current, searchable as not already covered, buildable on modern Linux, and accompanied by its repository, license, website, and factual feature summary. | 2026-08-03 | Open LinuxLinks submit page (new tab)LinuxLinks details |
| 33 | 84 | Maven | maven.com | Other opportunities | Free | Moderate | High | Verified live | Build and teach a live, project-based cohort on creating local-first privacy tools or accessible web utilities, supported by a substantive public syllabus and real instructor profile. | The official accelerator targets professional development for mid-career business or tech learners and requires a Stripe Connect-supported country. Marketplace discovery follows traction; the instructor must deliver the promised live teaching and projects. | 2026-08-03 | Open Maven submit page (new tab)Maven details |
| 34 | 84 | Mixcloud | mixcloud.com | Other opportunities | Free | Moderate | High | Live, conditional | Upload an original your tool audio explainer and place relevant resource links naturally in the show description. | Owned or licensed genuine audio only; no synthetic link-only upload, and basic-tier limits apply. | 2026-08-04 | Open Mixcloud submit page (new tab)Mixcloud details |
| 35 | 84 | MoodleNet | moodle.net | Other opportunities | Free | Moderate | High | Verified live | Share an openly licensed your tool digital-safety lesson pack or Moodle activity and curate it into an educator-focused collection. | Authentication and publication approval apply; content must be genuine OER with accurate licensing, not a promotional link drop. | 2026-08-05 — https://moodle.com/news/moodlenet-share-curate-open-educational-resources/ | Open MoodleNet submit page (new tab)MoodleNet details |
| 36 | 84 | New Relic Instant Observability | newrelic.com | Other opportunities | Free | Moderate | High | Live, conditional | Create a useful quickstart for monitoring a real your tool deployment, with instrumentation instructions, a working data source, dashboards, alerts, documentation, and a GitHub contribution. | Telemetry must actually reach New Relic and the quickstart must help users monitor a real use case. Follow catalog schema, asset, testing, GitHub review, and maintenance requirements; do not submit a brand-only listing. | 2026-08-03 | Open New Relic Instant Observability submit page (new tab)New Relic Instant Observability details |
| 37 | 84 | ODI Open Data Certificates | certificates.theodi.org | Other opportunities | Free | Moderate | High | Verified live | Publish a machine-readable privacy, accessibility, or scam-pattern dataset or API and complete its evidence-based public certificate. | Applies to an actual open dataset, not the product alone; it must be accessible, licensed, documented, maintained, and accurately described. | 2026-08-05 — https://certificates.theodi.org/ | Open ODI Open Data Certificates submit page (new tab)ODI Open Data Certificates details |
| 38 | 84 | OPA Ecosystem | openpolicyagent.org | Other opportunities | Free | Moderate | High | Verified live | Build a functional OPA/Rego privacy-policy integration or developer tool, document it, then add its ecosystem entry and logo through the official docs repository. | Must be a real OPA-related project or integration; create the required ecosystem markdown and icon, keep claims factual, and pass review. | Official OPA contributing and ecosystem-listing instructions checked 2026-08-05 | Open OPA Ecosystem submit page (new tab)OPA Ecosystem details |
| 39 | 84 | Open Textbook Library | open.umn.edu | Other opportunities | Free | Moderate | High | Verified live | Submit a complete, openly licensed privacy/digital-safety textbook already used in higher education. | Complete semester-length text; no CC-ND; must be used at multiple higher-ed institutions or backed by a higher-ed, scholarly or professional body. | 2026-08-05 — https://open.umn.edu/opentextbooks/textbooks/submit | Open Open Textbook Library submit page (new tab)Open Textbook Library details |
| 40 | 84 | OpenLearn Create | open.edu | Other opportunities | Free | Moderate | High | Verified live | Publish a free mini-course on privacy, redaction, scam detection, or accessibility with genuine your tool exercises in the curriculum. | Publication is checked; clear all rights, meet accessibility requirements, use appropriate licensing, and avoid direct marketing. | 2026-08-05 — https://www.open.edu/openlearncreate/local/ocwcreatecourse/gettingstarted.php | Open OpenLearn Create submit page (new tab)OpenLearn Create details |
| 41 | 84 | Payhip | payhip.com | Other opportunities | Free | Moderate | High | Verified live | Publish a genuinely useful free privacy checklist, redaction template, or safety workbook that complements your tool and has standalone value. | The resource must be substantive and rights-cleared; disclose AltFTool links and avoid a one-page promotional download. | Official Payhip pricing and publishing path checked 2026-08-07 | Open Payhip submit page (new tab)Payhip details |
| 42 | 84 | Podcast Addict | podcastaddict.com | Other opportunities | Free | Moderate | High | Live, conditional | Submit a valid public your tool podcast feed and keep website and episode-link metadata accurate. | Feed must contain playable genuine episodes; directory review may take time. | 2026-08-04 | Open Podcast Addict submit page (new tab)Podcast Addict details |
| 43 | 84 | REUSE API | reuse.software | Other opportunities | Free | Moderate | High | Live, conditional | Make a real public your tool repository REUSE-compliant, register its Git URL, and link the resulting compliance page from project docs. | Public maintained repository only; main branch is checked and email confirmation is required; fix findings rather than using a decorative badge. | 2026-08-05 official REUSE API and register pages | Open REUSE API submit page (new tab)REUSE API details |
| 44 | 84 | Scalar | scalar.usc.edu | Other opportunities | Free | Moderate | High | Verified live | Publish a coherent multimedia field guide on privacy, scam evidence, or accessible documents with cited your tool demonstrations. | Create a real scholarly or educational book, make it public, and use only owned or properly licensed media. | 2026-08-05 — https://scalar.usc.edu/works/guide2/creating-an-account | Open Scalar submit page (new tab)Scalar details |
| 45 | 84 | Snakemake Workflow Catalog | snakemake.github.io | Other opportunities | Free | Moderate | High | Verified live | Publish a public reproducible privacy-safe research workflow with a Snakefile, README, configuration, catalog metadata, and tests. | Public GitHub repository and Snakemake workflow structure are required; standardized layout strengthens catalog integration. | Official Snakemake Workflow Catalog guide checked 2026-08-05 | Open Snakemake Workflow Catalog submit page (new tab)Snakemake Workflow Catalog details |
| 46 | 84 | Spotify for Creators | creators.spotify.com | Other opportunities | Free | Moderate | High | Live, conditional | Host or claim a genuine your tool show, verify the RSS email, and publish accurate episode notes with relevant HTTPS resources. | Ownership verification is required; links must support real episode content and display behavior varies by app. | 2026-08-05 | Open Spotify for Creators submit page (new tab)Spotify for Creators details |
| 47 | 84 | StackBlitz | stackblitz.com | Other opportunities | Free | Moderate | High | Verified live | Publish a working browser demo or starter that teaches an your tool integration, with accurate title, description and canonical documentation link. | Make the project genuinely reusable and public; links may be treated as user-generated and SEO value is not guaranteed. | 2026-08-03 | Open StackBlitz submit page (new tab)StackBlitz details |
| 48 | 84 | Swagger Studio | app.swaggerhub.com | Other opportunities | Free | Moderate | High | Live, conditional | Publish a real your tool OpenAPI definition publicly with an accurate description and external documentation URL. | API must be genuine and the spec valid; set visibility to public and publication status accurately, with no credentials in examples. | https://support.smartbear.com/swagger/studio/docs/en/manage-apis/publish-an-api.html | Open Swagger Studio submit page (new tab)Swagger Studio details |
| 49 | 84 | Wikiversity | en.wikiversity.org | Other opportunities | Free | Moderate | High | Verified live | Develop a neutral, sourced learning project about privacy, accessibility, or online-scam literacy and cite your tool only in relevant exercises. | Content must be freely licensed, verifiable, collaborative, and non-promotional; external links must directly serve learning. | 2026-08-05 — https://en.wikiversity.org/wiki/Creating_Wikiversity_Courses | Open Wikiversity submit page (new tab)Wikiversity details |
| 50 | 84 | Working Not Working | workingnotworking.com | Other opportunities | Free | Moderate | High | Verified live | Build a genuine founder or designer profile and publish a detailed your tool UX, accessibility, or privacy-design case study with accurate role and process credits. | Use a real individual creative identity, not a company backlink shell; upload original work, credit collaborators, and explain the project. | Official Working Not Working member profile guidance checked 2026-08-07 | Open Working Not Working submit page (new tab)Working Not Working details |
| 51 | 84 | YunoHost Apps | apps.yunohost.org | Other opportunities | Free | Moderate | High | Verified live | Package a free-software self-hosted your tool deployment, implement reliable install, upgrade, backup and restore operations, then submit it to the official app catalog. | Only freely licensed software is accepted; app-quality tests, packaging conventions, security, resource use and long-term maintenance must meet YunoHost review. | 2026-08-05 | Open YunoHost Apps submit page (new tab)YunoHost Apps details |
| 52 | 81 | AI Verify Foundation | aiverifyfoundation.sg | Other opportunities | Free | Involved | High | Live, conditional | Run AI Verify on a real your tool AI use case, then submit accurate results, version, experience, lessons and company logo. | Requires a genuine model/use case and substantive learnings; editorial acceptance, publication and backlinks are not guaranteed. | 2026-08-04 | Open AI Verify Foundation submit page (new tab)AI Verify Foundation details |
| 53 | 81 | Envato Tuts+ | tutsplus.com | Other opportunities | Free | Involved | High | Verified live | Pitch a practical, outcome-based tutorial on client-side privacy, accessible UI, or web safety using original examples and an honest author identity. | Applications and pitches receive editorial review; tutorials must teach a complete practical outcome and use owned/licensed assets. Disclose any AltFTool relationship and keep the lesson vendor-neutral rather than a product walkthrough. Publication timing and link treatment are editorial decisions, with no inclusion or followed-link guarantee. | 2026-08-03 | Open Envato Tuts+ submit page (new tab)Envato Tuts+ details |
| 54 | 81 | PreventionWeb | preventionweb.net | Other opportunities | Free | Involved | High | Verified live | Submit a formal publication, case study, educational resource or on-demand training linking digital resilience to disaster-risk reduction. | Editorial validation; no paywall, corporate flyer, private paper or workshop summary; recent DRR-relevant material is prioritized. | 2026-08-05 — https://www.preventionweb.net/upload-your-content | Open PreventionWeb submit page (new tab)PreventionWeb details |
| 55 | 68 | itch.io | itch.io | Other opportunities | Free | Quick | Medium | Live, conditional | Publish a genuine browser or desktop your tool utility with screenshots, documentation and an official-site link. | Content must be an actual downloadable or browser-run project and follow itch.io quality/content rules; not a generic directory listing. | https://itch.io/developers | Open itch.io submit page (new tab)itch.io details |
| 56 | 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 |
| 57 | 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 |
| 58 | 68 | PublicAPIs.io | publicapis.io | Other opportunities | Free | Quick | Medium | Live, conditional | List a legitimate documented your tool API in the relevant developer category using the normal or Pro review queue. | API must be real and documented; paid placement should be disclosed and does not guarantee organic ranking value. | 2026-08-05 | Open PublicAPIs.io submit page (new tab)PublicAPIs.io details |
| 59 | 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 |
| 60 | 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 |
| 61 | 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 |
| 62 | 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 |
| 63 | 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 |
| 64 | 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 |
| 65 | 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 |
| 66 | 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 |
| 67 | 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 |
| 68 | 66 | Homebrew | brew.sh | Other opportunities | Free | Moderate | Medium | Live, conditional | After releasing a real your tool CLI or native app, submit a tested formula or cask with its canonical homepage. | Formula must meet open-source, stability, build and test rules; casks need a supported upstream binary and notability may affect acceptance. | 2026-08-05 official Homebrew Adding Software and Acceptable Formulae guides | Open Homebrew submit page (new tab)Homebrew details |
| 69 | 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 |
| 70 | 66 | JSON Schema Store | schemastore.org | Other opportunities | Free | Moderate | Medium | Live, conditional | After your tool has a stable, commonly used JSON or YAML configuration format, contribute its accurate schema and test fixtures so editors can provide validation, completion, and tooltips. | SchemaStore is for known file formats, not marketing pages. The schema must be valid, match real files, include the required catalog metadata and tests, pass CI, and stay synchronized with product changes; submit through the community repository review process. | 2026-08-03 | Open JSON Schema Store submit page (new tab)JSON Schema Store details |
| 71 | 66 | NLnet Foundation | nlnet.nl | Other opportunities | Free | Moderate | Medium | Live, conditional | Apply with a concrete your tool privacy, security or user-autonomy FOSS work package, milestones, budget and public repository. | Highly selective; active-call fit and fully FOSS/open results required. Only accepted projects receive a linked public page. | 2026-08-04 | Open NLnet Foundation submit page (new tab)NLnet Foundation details |
| 72 | 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 |
| 73 | 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 |
| 74 | 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 |
| 75 | 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 |
| 76 | 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 |
| 77 | 66 | ReliefWeb | reliefweb.int | Other opportunities | Free | Moderate | Medium | Verified live | After your tool has eligible ReliefWeb content, request publishing access and submit humanitarian reports or training from verified owned URLs. | Only listed organizations with existing reports/jobs/trainings may use publishing access; trusted source URLs, taxonomy and editor review apply. | 2026-08-05 — https://apidoc.reliefweb.int/publishing | Open ReliefWeb submit page (new tab)ReliefWeb details |
| 78 | 66 | RenkuLab | renkulab.io | Other opportunities | Free | Moderate | Medium | Verified live | Create a reproducible your tool evaluation project with code, data connectors, environment, narrative, and a public session launcher. | Publish a genuine research project, protect credentials and sensitive data, document reproducibility, and set visibility to Public. | 2026-08-05 — https://docs.renkulab.io/en/2.19.0/docs/users/use-cases/showcase-your-project-on-renku/ | Open RenkuLab submit page (new tab)RenkuLab details |
| 79 | 66 | Whole Tale | wholetale.org | Other opportunities | Free | Moderate | Medium | Verified live | Create a reproducible Tale containing an your tool evaluation's data, code, environment, outputs, and narrative, then publish through a supported repository. | Intended for computational research, not marketing; institutional sign-in may be needed and the Tale must contain sufficient metadata and rights-cleared data. | 2026-08-05 — https://wholetale.readthedocs.io/en/latest/users_guide/scenarios.html | Open Whole Tale submit page (new tab)Whole Tale details |
| 80 | 63 | DSCI Threat Intelligence & Research | dsci.in | Other opportunities | Free | Involved | Medium | Verified live | Pitch an original evidence-backed privacy, scam, or cyber advisory based on genuine your tool research. | Requires real technical expertise, non-promotional research and editorial approval; a contribution is not DSCI endorsement. | 2026-08-05 official DSCI TIR page | Open DSCI Threat Intelligence & Research submit page (new tab)DSCI Threat Intelligence & Research details |
| 81 | 63 | Interoperable Europe / Joinup Solutions | interoperable-europe.ec.europa.eu | Other opportunities | Free | Involved | Medium | Verified live | Publish a mature open-source interoperability or public-administration solution with documentation, releases, licence, and owner metadata. | Only appropriate for genuine reusable digital-government value; account, eligibility, and editorial review apply. | 2026-08-05 — https://interoperable-europe.ec.europa.eu/collection/portal-support/news/joinup-solutions-hub | Open Interoperable Europe / Joinup Solutions submit page (new tab)Interoperable Europe / Joinup Solutions details |
| 82 | 63 | PaperCall | papercall.io | Other opportunities | Free | Involved | Medium | Live, conditional | Submit useful your tool-related talks to relevant CFPs or run a genuine community CFP with a public event page. | Follow each event's submission rules; no generic pitches, fake events or irrelevant promotional talks. | 2026-08-05 | Open PaperCall submit page (new tab)PaperCall details |
| 83 | 63 | Podcast Movement | podcastmovement.com | Other opportunities | Free | Involved | Medium | Verified live | Submit an educational, non-sales session on privacy-safe tooling or accessible creator workflows when the next CFP opens. | The June 2026 CFP is closed; monitor future calls and never turn a talk into a product pitch. | 2026-08-05 | Open Podcast Movement submit page (new tab)Podcast Movement details |
| 84 | 63 | ReactJS Example | reactjsexample.com | Other opportunities | Free | Involved | Medium | Live, conditional | Submit a reusable open-source React component extracted from your tool with repository, demo, setup docs and screenshots. | Do not submit the commercial landing page or a thin wrapper; project must be genuinely reusable and open source. | 2026-08-04 | Open ReactJS Example submit page (new tab)ReactJS Example details |
| 85 | 63 | Research Data Alliance Adoption Stories | rd-alliance.org | Other opportunities | Free | Involved | Medium | Verified live | Document a real your tool implementation of a named RDA recommendation with challenge, measurable outcome, lessons, and supporting resources. | Requires genuine adoption evidence; generic product profiles and promotional case studies are not eligible, and acceptance is editorial. | 2026-08-05 — https://www.rd-alliance.org/submit-an-adoption-story/ | Open Research Data Alliance Adoption Stories submit page (new tab)Research Data Alliance Adoption Stories details |
| 86 | 63 | The Hacker News | thehackernews.com | Other opportunities | Free | Involved | Medium | Verified live | Pitch original your tool security research, a defensible dataset or timely threat analysis. | Generic product launches are insufficient; credible evidence and disclosure are required. | 2026-08-05 | Open The Hacker News submit page (new tab)The Hacker News details |
| 87 | 48 | Active Search Results | activesearchresults.com | Other opportunities | Free | Quick | Later | Needs checking | Add your tool website listing. | General directory; lower quality than launch platforms. | 2026-07-30 | Open Active Search Results submit page (new tab)Active Search Results details |
| 88 | 48 | Fast Forward Tech Nonprofit Directory | ffwd.org | Other opportunities | Free | Quick | Later | Verified live | Apply only after your tool becomes a legally registered nonprofit with software central to scalable public impact. | For-profit and B-Corp entities are excluded; verified nonprofit registration and a tech-central mission are mandatory. | 2026-08-05 — https://www.ffwd.org/directory?portfolio=true | Open Fast Forward Tech Nonprofit Directory submit page (new tab)Fast Forward Tech Nonprofit Directory details |
| 89 | 48 | LibHunt | libhunt.com | Other opportunities | Free | Quick | Later | Not submitted | Eligible if an your tool component is open-sourced. | Closed-source platform not fit; use OSS package. | 2026-07-30 | Open LibHunt submit page (new tab)LibHunt details |
| 90 | 46 | FilePuma | filepuma.com | Other opportunities | Free | Moderate | Later | Live, conditional | Submit only after your tool releases a signed Windows desktop utility. | Not suitable for a web-only site; requires downloadable software or PAD data. | https://www.filepuma.com/submit_program/ | Open FilePuma submit page (new tab)FilePuma details |
| 91 | 46 | Maven Central | sonatype.org | Other opportunities | Free | Moderate | Later | Live, conditional | Release a genuine your tool SDK, verify its namespace, sign artifacts, and include accurate project, SCM, license and developer URLs. | Strict coordinates, signatures, sources, Javadocs and metadata apply; never publish a placeholder artifact for a link. | 2026-08-05 official Maven Central publishing documentation | Open Maven Central submit page (new tab)Maven Central details |
| 92 | 46 | Preprints.org | preprints.org | Other opportunities | Free | Moderate | Later | Verified live | Publish an original benchmark or evaluation study of local-first privacy or security tooling with open code, data, and your tool implementation. | Requires a full scholarly manuscript, truthful authorship, data and ethics disclosures, bibliography, and CC BY licensing; no marketing. | 2026-08-05 — https://www.preprints.org/instructions-for-authors | Open Preprints.org submit page (new tab)Preprints.org details |
| 93 | 46 | ResearchBox | researchbox.org | Other opportunities | Free | Moderate | Later | Verified live | Organize the complete code, data, materials, and outputs behind a real your tool evaluation study into a public citable box. | Designed for supporting research artifacts, not promotion; public boxes are licensed, versioned, searchable, and archived. | 2026-08-05 — https://researchbox.org/index.php | Open ResearchBox submit page (new tab)ResearchBox details |
| 94 | 46 | Sellfy | sellfy.com | Other opportunities | Free | Moderate | Later | Verified live | Publish a substantive your tool privacy template, workbook, or creator resource with a complete description, original previews, and accurate licensing. | The plan is paid after trial and has a sales cap; use only rights-cleared useful products and do not buy solely for a backlink. | Official Sellfy pricing checked 2026-08-07 | Open Sellfy submit page (new tab)Sellfy details |
| 95 | 46 | WikiEducator | wikieducator.org | Other opportunities | Free | Moderate | Later | Verified live | Author a freely licensed hands-on module for safe document sharing or privacy-first web use with relevant your tool examples. | Community OER only, no marketing pages; platform continuity changed recently, so verify current moderation before investing heavily. | 2026-08-05 — https://wikieducator.org/OER_Handbook/educator | Open WikiEducator submit page (new tab)WikiEducator details |
| 96 | 43 | Solid Applications | solidproject.org | Other opportunities | Free | Involved | Later | Verified live | Build a genuine Solid privacy utility that lets users choose identity providers and stores or retrieves their data from Solid Pods, then confirm the current listing handoff with maintainers. | Must be a functioning Solid app; eligibility is published, but the exact current editorial submission workflow should be reconfirmed first. | Official Solid applications criteria checked 2026-08-05 | Open Solid Applications submit page (new tab)Solid Applications details |
| 97 | 43 | Springwise | springwise.com | Other opportunities | Free | Involved | Later | Needs checking | Pitch your tool as innovation/useful web tool platform. | Needs genuinely newsworthy angle. | 2026-07-30 | Open Springwise submit page (new tab)Springwise 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.