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A maintained list of 1,854 legitimate backlink sites: directories, profile creation sites, guest posting sites, launch platforms, registries and marketplaces. 1,532 are free or have a free tier, 44 usually give a dofollow link, and 772 have an estimated DA of 70 or more. Every row shows authority, link type, cost and effort, and links straight to the submit page.
The table is wider than the screen — swipe it sideways for cost, effort and the preparation notes.
| # | Impact (sorted) | Site — sort by this | Est. DA — sort by this | Link | Domain | Type | Cost | Effort — sort by this | Priority | Status | What to prepare | Rules / caveat | Checked | Actions |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 201 | 84 | Intercom App Store | 90 | Nofollow | intercom.com | Marketplaces and app stores | Free | Moderate | High | Verified live | Build an Intercom app for intentional conversation privacy scanning or sanitized export generation and include a clear your tool install or learn-more URL. | Listed apps require OAuth, a complete start guide and listing, accurate installation links, partner information, and Intercom review. | Official Intercom App Store listing documentation checked 2026-08-07 | Open Intercom App Store submit page (new tab)Intercom App Store details |
| 202 | 84 | Internet.nl Hall of Fame | 60 | Link type unknown | 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 |
| 203 | 84 | Joomla Extensions Directory | 85 | Sometimes dofollow | extensions.joomla.org | Marketplaces and app stores | Free | Moderate | High | Verified live | Build a genuine Joomla extension, create a developer profile and submit a complete listing with the official project website. | Author-only submissions; GPL-compatible licensing, update server, installability, working links and review are required. | Official JED submission docs checked 2026-07-30 | Open Joomla Extensions Directory submit page (new tab)Joomla Extensions Directory details |
| 204 | 84 | Jotform Widget Marketplace | 90 | Nofollow | jotform.com | Marketplaces and app stores | Free | Moderate | High | Verified live | Build and host a useful Jotform widget, register it with full documentation and send it for approval. | Widget must be functional, secure, mobile-friendly and compliant with Jotform review and data rules. | Official Jotform widget portal checked 2026-07-30 | Open Jotform Widget Marketplace submit page (new tab)Jotform Widget Marketplace details |
| 205 | 84 | JS.ORG | 70 | Dofollow | 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 |
| 206 | 84 | JSFiddle | 85 | Nofollow | jsfiddle.net | Design galleries | Free | Moderate | High | Verified live | Publish a small standalone your tool privacy or accessibility demo with explanatory comments and a stable share URL. | Use original client-side demo code and never include secrets, personal data, trackers, or a promotion-only empty fiddle. | Official JSFiddle getting-started documentation checked 2026-08-07 | Open JSFiddle submit page (new tab)JSFiddle details |
| 207 | 84 | Kaggle | 90 | Nofollow | kaggle.com | Communities and forums | Free | Moderate | High | Live, conditional | Publish a clean your tool benchmark or open dataset plus a reproducible notebook, with proper licensing and the canonical project URL in the data card. | Only publish useful non-sensitive data/code; remove secrets and PII, document methodology, choose a valid license, and avoid promotional-only datasets. | https://www.kaggle.com/datasets | Open Kaggle submit page (new tab)Kaggle details |
| 208 | 84 | Kestra Plugins | 55 | Link type unknown | kestra.io | Marketplaces and app stores | Free | Moderate | High | Verified live | Implement Java tasks or triggers for submitting your tool audits and fetching structured results, complete with typed properties, examples, tests and generated documentation. | Follow current Java/Gradle conventions, internal HTTP client guidance, icons/metadata and unit/flow tests; annotations generate UI and website documentation. | 2026-08-05 | Open Kestra Plugins submit page (new tab)Kestra Plugins details |
| 209 | 84 | LangChain Integrations | 75 | Link type unknown | langchain.com | Marketplaces and app stores | Free | Moderate | High | Verified live | Build a standalone your tool integration package with tests and submit the required LangChain documentation PR. | Must fit an accepted integration type, pass standard tests, be published as a package, and complete code plus docs review. | 2026-08-05 | Open LangChain Integrations submit page (new tab)LangChain Integrations details |
| 210 | 84 | Langflow Component Bundles | 50 | Link type unknown | 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 |
| 211 | 84 | LinuxLinks | 60 | Dofollow | 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 |
| 212 | 84 | ListChallenges | 55 | Nofollow | listchallenges.com | Profiles and entities | Free | Moderate | High | Verified live | Create a genuine founder profile and share a useful build story or tutorial with a relevant link. | Follow community self-promotion rules; contribute before linking; no repetitive posts. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/listchallenges | Open ListChallenges submit page (new tab)ListChallenges details |
| 213 | 84 | Lobsters | 65 | Nofollow | lobste.rs | Profiles and entities | Free | Moderate | High | Needs checking | Create a genuine founder profile and share a useful build story or tutorial with a relevant link. | Follow community self-promotion rules; contribute before linking; no repetitive posts. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/lobsters | Open Lobsters submit page (new tab)Lobsters details |
| 214 | 84 | MacPorts | 70 | Link type unknown | ports.macports.org | Developer registries | Free | Moderate | High | Verified live | Create and test a Portfile for an open-source your tool CLI or desktop app, including its canonical homepage. | Run lint and local builds, then submit a pull request or a MacPorts Trac submission ticket for review. | Official MacPorts guide checked 2026-07-30 | Open MacPorts submit page (new tab)MacPorts details |
| 215 | 84 | Maven | 70 | Link type unknown | 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 |
| 216 | 84 | Maven Central | 70 | Link type unknown | central.sonatype.com | Developer registries | Free | Moderate | High | Verified live | Release a useful Java or Kotlin SDK and include the project homepage, source control, license and developer metadata in the POM. | Requires namespace verification, signed artifacts and complete POM metadata; releases are permanent. | Official Sonatype Central docs checked 2026-07-30 | Open Maven Central submit page (new tab)Maven Central details |
| 217 | 84 | MELPA | 55 | Link type unknown | melpa.org | Developer registries | Free | Moderate | High | Verified live | Create a useful Emacs client for a public your tool API, host its source openly and submit a MELPA recipe pull request. | Package source must be public, installable and maintained; recipe and naming rules are reviewed by maintainers. | 2026-08-03 | Open MELPA submit page (new tab)MELPA details |
| 218 | 84 | Mendeley Data | 90 | Nofollow | mendeley.com | Publishing platforms | Free | Moderate | High | Verified live | Publish an original, human-verified privacy or accessibility benchmark with complete methodology, provenance, schema, license, and a relevant project citation. | Intended for research data, not promotion. Do not upload personal/confidential data or AI-generated datasets; published versions receive a DOI and generally require a new version or support request for later changes/removal. | 2026-08-03 | Open Mendeley Data submit page (new tab)Mendeley Data details |
| 219 | 84 | Minimal Gallery | 50 | Dofollow | minimal.gallery | Software directories | Free | Moderate | High | Not submitted | Submit your tool as a polished tool website with its strongest public page and a concise explanation of the design system. | Manual curation normally takes one to two weeks and is highly selective; the site must be public, original, lawful, and visually polished. | 2026-08-03 | Open Minimal Gallery submit page (new tab)Minimal Gallery details |
| 220 | 84 | Mixcloud | 90 | Nofollow | 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 |
| 221 | 84 | MoodleNet | 65 | Link type unknown | 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 |
| 222 | 84 | Nagios Exchange | 60 | Link type unknown | exchange.nagios.org | Marketplaces and app stores | Free | Moderate | High | Verified live | Create a working Nagios check or addon for an your tool API/privacy-health signal, register, and submit the project with source and website links. | Attach real plugin files and accurate compatibility/license details; every submission enters review before appearing publicly. | 2026-08-05 — https://exchange.nagios.org/about/ | Open Nagios Exchange submit page (new tab)Nagios Exchange details |
| 223 | 84 | Netlify Extensions Directory | 90 | Link type unknown | netlify.com | Marketplaces and app stores | Free | Moderate | High | Verified live | Build and test a Netlify extension, publish it publicly, then submit it for review and directory listing. | Public listed extensions are reviewed; provide accurate in-app documentation, support and secure implementation. | Official Netlify SDK publishing docs checked 2026-07-30 | Open Netlify Extensions Directory submit page (new tab)Netlify Extensions Directory details |
| 224 | 84 | New Relic Instant Observability | 90 | Link type unknown | 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 |
| 225 | 84 | Nextcloud App Store | 80 | Link type unknown | nextcloud.com | Marketplaces and app stores | Free | Moderate | High | Not submitted | Build a signed Nextcloud app for local document sanitization or privacy checks, publish releases, and maintain App Store compatibility. | Must follow App Store, signing, security, privacy, and license rules; approval and outbound-link presentation remain under store moderation. | 2026-08-03 | Open Nextcloud App Store submit page (new tab)Nextcloud App Store details |
| 226 | 84 | Nixpkgs | 75 | Link type unknown | search.nixos.org | Developer registries | Free | Moderate | High | Verified live | Add and test a Nix expression for a genuine your tool release with description, homepage, license and maintainer metadata. | Must satisfy Nixpkgs contribution, licensing, reproducibility, review and supported-platform rules. | Official Nixpkgs 26.05 manual checked 2026-07-30 | Open Nixpkgs submit page (new tab)Nixpkgs details |
| 227 | 84 | npm | 95 | Nofollow | npmjs.com | Developer registries | Free | Moderate | High | Not submitted | Publish @your tool/embed or utility package with homepage. | Only after package exists; keep license clean. | 2026-07-30 | Open npm submit page (new tab)npm details |
| 228 | 84 | ODI Open Data Certificates | 55 | Link type unknown | 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 |
| 229 | 84 | Ollama Model Library | 75 | Link type unknown | ollama.com | Developer registries | Free | Moderate | High | Verified live | Publish a small local-first your tool classifier for privacy, secret detection, or defensive content analysis. | Verify base-model redistribution rights, publish a clear licence, document limitations, and exclude private training data. | Official Ollama model sharing documentation checked 2026-08-07 | Open Ollama Model Library submit page (new tab)Ollama Model Library details |
| 230 | 84 | OMR Reviews | 70 | Link type unknown | omr.com | Software directories | Free | Moderate | High | Verified live | Suggest your tool and complete its B2B software profile. | Must fit a supported B2B software category; OMR reviews the suggestion. | https://omr.com/en/reviews/b2b/list-software | Open OMR Reviews submit page (new tab)OMR Reviews details |
| 231 | 84 | OPA Ecosystem | 60 | Link type unknown | 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 |
| 232 | 84 | Open Collective | 85 | Nofollow | opencollective.com | Profiles and entities | Free | Moderate | High | Live, conditional | Create a genuine your tool collective, complete its public profile, and add the official website plus repository/social links. | Use only for a real community or open-source project; keep team, purpose and financial details accurate. | 2026-08-05 | Open Open Collective submit page (new tab)Open Collective details |
| 233 | 84 | Open Textbook Library | 85 | Link type unknown | 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 |
| 234 | 84 | OpenLearn Create | 90 | Link type unknown | 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 |
| 235 | 84 | OpenML | 60 | Link type unknown | openml.org | Publishing platforms | Free | Moderate | High | Verified live | Publish a documented, de-identified ML-ready benchmark such as labelled phishing, homograph, or accessibility test cases with provenance and an open license. | The upload must be a legitimate machine-learning dataset, include name, description, and license, contain no sensitive data, and pass OpenML's automated verification before activation. | 2026-08-03 | Open OpenML submit page (new tab)OpenML details |
| 236 | 84 | openSUSE Build Service | 70 | Link type unknown | build.opensuse.org | Developer registries | Free | Moderate | High | Verified live | Create a public OBS project and package that builds your tool for supported Linux distributions with upstream links. | Requires valid build recipes, licenses and maintained packages; project pages are for software distribution, not promotion alone. | Official OBS user guide and live service checked 2026-07-30 | Open openSUSE Build Service submit page (new tab)openSUSE Build Service details |
| 237 | 84 | Openwall oss-security | 75 | Link type unknown | openwall.com | Software directories | Free | Moderate | High | Live, conditional | Post only a self-contained initial announcement of a substantial open-source defensive tool, a major update, or a properly coordinated OSS vulnerability disclosure. | The list is for OSS security, not promotion. Tool posts should be rare, technically detailed, and especially useful for improving other open-source software; minor updates and cross-posting are discouraged. | 2026-08-03 | Open Openwall oss-security submit page (new tab)Openwall oss-security details |
| 238 | 84 | Payhip | 75 | Link type unknown | 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 |
| 239 | 84 | PeerSpot | 70 | Link type unknown | peerspot.com | Software directories | Free | Moderate | High | Live, conditional | Contact PeerSpot with your tool enterprise use cases and real-customer evidence to request inclusion. | PeerSpot says listings are not pay-to-play, but the product must be enterprise-class and have real customers; never manufacture reviews. | 2026-08-03 | Open PeerSpot submit page (new tab)PeerSpot details |
| 240 | 84 | Podcast Addict | 70 | Link type unknown | 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 |
| 241 | 84 | Podchaser | 75 | Nofollow | podchaser.com | Profiles and entities | Free | Moderate | High | Live, conditional | Claim a genuine your tool show, verify ownership, and complete its official website and creator details. | Ownership verification by feed email or token is required; never create a fake podcast for links. | 2026-08-04 | Open Podchaser submit page (new tab)Podchaser details |
| 242 | 84 | Privacy Guides | 70 | Link type unknown | privacyguides.org | Software directories | Free | Moderate | High | Not submitted | Submit one mature privacy tool, disclose ownership, publish its exact threat model and limitations, and engage transparently with the community review. | Developers must disclose affiliation and explain the privacy advantage and threat model; sensitive-data tools need a security white paper and audit status. Open source, active development, usability, cross-platform support, and strong documentation are preferred. | 2026-08-03 | Open Privacy Guides submit page (new tab)Privacy Guides details |
| 243 | 84 | protocols.io | 75 | Link type unknown | protocols.io | Developer registries | Free | Moderate | High | Live, conditional | Publish a reproducible your tool testing, privacy-analysis or accessibility-evaluation method and cite relevant project resources. | Submissions must contribute genuine experimental or computational research methods; non-scientific promotion may be removed. | 2026-08-04 | Open protocols.io submit page (new tab)protocols.io details |
| 244 | 84 | QGIS Official Plugin Repository | 80 | Link type unknown | qgis.org | Marketplaces and app stores | Free | Moderate | High | Verified live | Build a QGIS plugin that checks selected layers or exports for sensitive coordinates and metadata, then creates a safer copy. | An OSGeo account, valid package and metadata, unique name, usable documentation, and staff approval are required. | Official QGIS plugin release documentation checked 2026-08-07 | Open QGIS Official Plugin Repository submit page (new tab)QGIS Official Plugin Repository details |
| 245 | 84 | Quarto Extensions | 65 | Link type unknown | quarto.org | Marketplaces and app stores | Free | Moderate | High | Verified live | Create a public Quarto extension for privacy, accessibility, or document checks with documentation, examples, and a license, then propose it for listing. | Must be a working extension; inclusion is manually curated and promotional links alone are insufficient. | Official Quarto extension and listing documentation checked 2026-08-05 | Open Quarto Extensions submit page (new tab)Quarto Extensions details |
| 246 | 84 | Railway Templates | 70 | Link type unknown | railway.com | Marketplaces and app stores | Free | Moderate | High | Live, conditional | Publish a maintained your tool open-source service template with safe variables, health checks, documentation and a demo. | Must be a reusable deployable template; never include secrets and provide active maintenance. | 2026-08-04 | Open Railway Templates submit page (new tab)Railway Templates details |
| 247 | 84 | Raindrop.io Public Pages | 70 | Nofollow | raindrop.io | Publishing platforms | Free | Moderate | High | Verified live | Publish a carefully annotated collection of trustworthy privacy, accessibility, and safety resources, including only your tool pages that genuinely fit each section. | Email verification is required and each collection must be explicitly made public; official help says public pages may be indexed. Avoid self-only or mass-imported link collections, add independent sources and honest notes, and disclose AltFTool ownership. Pages are self-published UGC with no ranking or followed-link guarantee. | 2026-08-03 | Open Raindrop.io Public Pages submit page (new tab)Raindrop.io Public Pages details |
| 248 | 84 | Redmine Plugin Directory | 75 | Link type unknown | redmine.org | Marketplaces and app stores | Free | Moderate | High | Not submitted | Build a maintained Redmine plugin that creates privacy or security audit tasks, document supported versions, then register it under an authenticated developer account. | Only register a functioning plugin you maintain, with accurate compatibility and support details; moderation and link treatment are not guaranteed. | 2026-08-03 | Open Redmine Plugin Directory submit page (new tab)Redmine Plugin Directory details |
| 249 | 84 | REUSE API | 50 | Link type unknown | 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 |
| 250 | 84 | RubyGems.org | 80 | Nofollow | rubygems.org | Developer registries | Free | Moderate | High | Verified live | Package a legitimate your tool Ruby client or utility and add homepage and source metadata before pushing the gem. | Use a unique gem name, valid gemspec and maintained code; never publish a placeholder package. | Official RubyGems guide checked 2026-07-30 | Open RubyGems.org submit page (new tab)RubyGems.org details |
| 251 | 84 | Sanity Exchange | 75 | Link type unknown | sanity.io | Marketplaces and app stores | Free | Moderate | High | Verified live | Build an your tool Sanity Studio plugin, publish it to npm, and submit it to Sanity Exchange with documentation and support links. | Must be a reusable external-use Studio plugin with correct package metadata and documentation and follow the current Exchange flow. | Official Sanity Studio plugin documentation checked 2026-08-07 | Open Sanity Exchange submit page (new tab)Sanity Exchange details |
| 252 | 84 | Scalar | 50 | Link type unknown | 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 |
| 253 | 84 | Slant | 75 | Nofollow | slant.co | Communities and forums | Free | Moderate | High | Needs checking | Find an existing question where a specific your tool utility is a genuine option, add it accurately, and document balanced pros and cons. | Never create fake recommendations or coordinate votes; add only a relevant product and disclose the relationship when participating. | 2026-08-03 | Open Slant submit page (new tab)Slant details |
| 254 | 84 | Snakemake Workflow Catalog | 50 | Link type unknown | 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 |
| 255 | 84 | Snap Store | 85 | Link type unknown | snapcraft.io | Marketplaces and app stores | Free | Moderate | High | Verified live | Ship an installable your tool Linux app or CLI as a snap with a complete store listing and website link. | Reserve the name, pass automated review and keep confinement, permissions and releases accurate. | Official Snapcraft docs checked 2026-07-30 | Open Snap Store submit page (new tab)Snap Store details |
| 256 | 84 | Softonic | 90 | Nofollow | softonic.com | Software directories | Free | Moderate | High | Needs checking | Submit your desktop or mobile app through their developer contact so it gets a download page. | Installers are malware-scanned; bundled adware is refused. | Added 2026-11-01 | Open Softonic submit page (new tab)Softonic details |
| 257 | 84 | Splunkbase | 90 | Link type unknown | splunk.com | Marketplaces and app stores | Free | Moderate | High | Live, conditional | Build a useful Splunk app or add-on for legitimate your tool security, audit, or operational data; package it with clear documentation, icons, screenshots, release metadata, and support details. | The package must pass structural, antivirus, security, and AppInspect checks plus admin review. Choose hosted versus external directory listing carefully because the hosting mode cannot be changed after publication; keep the app maintained and accurately supported. | 2026-08-03 | Open Splunkbase submit page (new tab)Splunkbase details |
| 258 | 84 | Spotify for Creators | 95 | Nofollow | 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 |
| 259 | 84 | StackBlitz | 85 | Nofollow | 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 |
| 260 | 84 | Start.me | 80 | Nofollow | start.me | Publishing platforms | Free | Moderate | High | Not submitted | Build a valuable public start page of privacy and productivity resources, then submit it to Community Pages after adding your tool selectively. | Community submission is reviewed, new accounts have a waiting period, and the page must be public and useful rather than self-promotional. | 2026-08-03 | Open Start.me submit page (new tab)Start.me details |
| 261 | 84 | Startup India | 75 | Link type unknown | startupindia.gov.in | Startup directories | Free | Moderate | High | Verified live | Apply only if the legal entity behind your tool meets DPIIT eligibility, innovation, age, and turnover conditions. | This is entity validation rather than a guaranteed public backlink; incorporation and eligibility evidence are mandatory. | https://www.startupindia.gov.in/content/sih/en/startupgov/startup_recognition_page.html | Open Startup India submit page (new tab)Startup India details |
| 262 | 84 | Statamic Marketplace | 60 | Link type unknown | statamic.dev | Marketplaces and app stores | Free | Moderate | High | Verified live | Build a useful Statamic/Laravel addon around an your tool workflow, publish it on Packagist and submit the product to the official marketplace. | Requires a real Composer addon, seller/product setup, accurate docs and ongoing PHP/Laravel compatibility; paid-addon economics differ and must not be pursued solely for a link. | 2026-08-05 | Open Statamic Marketplace submit page (new tab)Statamic Marketplace details |
| 263 | 84 | Storybook Integration Catalog | 75 | Link type unknown | storybook.js.org | Marketplaces and app stores | Free | Moderate | High | Verified live | Build a Storybook panel or preset that reports metadata, accessibility, broken-link or deployed-story audit findings through your tool, then publish it as an npm addon. | Requires a real distributable addon, README, preset entry and storybook-addon as the first keyword; support current Storybook and never transmit private story content without opt-in. | 2026-08-05 | Open Storybook Integration Catalog submit page (new tab)Storybook Integration Catalog details |
| 264 | 84 | Strapi Community Marketplace | 80 | Link type unknown | strapi.io | Marketplaces and app stores | Free | Moderate | High | Verified live | Build a useful your tool Strapi plugin and submit its package, repository, documentation, and your tool support URL. | Must be functional, MIT-licensed, publicly packaged and documented, and pass functional and security review; no offsite paywall. | Official Strapi community plugin submission page checked 2026-08-07 | Open Strapi Community Marketplace submit page (new tab)Strapi Community Marketplace details |
| 265 | 84 | Streamlit Community Cloud | 75 | Link type unknown | streamlit.io | Communities and forums | Free | Moderate | High | Verified live | Deploy an educational your tool data or AI demo from a public GitHub repository and include a useful link to the full tool or documentation. | The app must work independently, protect secrets and comply with resource limits; do not create a doorway page solely for a backlink. | 2026-08-03 | Open Streamlit Community Cloud submit page (new tab)Streamlit Community Cloud details |
| 266 | 84 | Super User | 80 | Nofollow | superuser.com | Communities and forums | Free | Moderate | High | Needs checking | Set up a profile with your site in the website field, then answer computer questions where your guide genuinely helps. | Self-promotion must be disclosed and relevant; answers that are mostly a link get deleted. | Added 2026-11-01 | Open Super User submit page (new tab)Super User details |
| 267 | 84 | Swagger Studio | 75 | Nofollow | 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 |
| 268 | 84 | Swift Package Index | 55 | Link type unknown | swiftpackageindex.com | Developer registries | Free | Moderate | High | Verified live | Add a public Swift package with Package.swift, semantic-version tags, documentation and an your tool homepage link. | Repository must be public, use Swift 5 or newer and have a valid semantic-version release. | Official Swift Package Index submission page checked 2026-07-30 | Open Swift Package Index submit page (new tab)Swift Package Index details |
| 269 | 84 | The Dots | 55 | Link type unknown | the-dots.com | Profiles and entities | Free | Moderate | High | Verified live | Create the real designer/founder profile and add an original your tool product-design or accessibility project with collaborators, role, process, and official URL. | Publish only work the profile owner actually created and credit collaborators accurately; do not fabricate a team or engagement. Projects are community UGC and may be curated or moderated. External links, search visibility, timing, and rel/follow treatment are not guaranteed. | 2026-08-03 | Open The Dots submit page (new tab)The Dots details |
| 270 | 84 | Thunderbird Add-ons | 75 | Nofollow | addons.thunderbird.net | Marketplaces and app stores | Free | Moderate | High | Verified live | Build a legitimate Thunderbird MailExtension, complete its add-on page and submit it through the Developer Hub. | Must comply with Thunderbird technical, security, privacy, licensing and review policies. | Official Thunderbird add-on developer pages checked 2026-07-30 | Open Thunderbird Add-ons submit page (new tab)Thunderbird Add-ons details |
| 271 | 84 | TODO Group OSPO Landscape | 55 | Link type unknown | todogroup.org | Software directories | Free | Moderate | High | Live, conditional | Create a real your tool OSPO function or a tool that materially supports OSPO work, then contribute the logo and canonical URL by issue or pull request. | Adopters must meet the OSPO definition; tools must genuinely support governance, SBOM, compliance, security, documentation or community health. | 2026-08-05 official TODO Group landscape repository and documentation | Open TODO Group OSPO Landscape submit page (new tab)TODO Group OSPO Landscape details |
| 272 | 84 | ToolJet Marketplace | 55 | Link type unknown | tooljet.ai | Marketplaces and app stores | Free | Moderate | High | Verified live | Create a functional your tool ToolJet plugin with clear documentation and tests, then submit it to the marketplace through the official contribution flow. | Must be a real maintained plugin, meet repository standards, pass review, and avoid a thin wrapper whose only purpose is promotion. | Official ToolJet Marketplace plugin documentation checked 2026-08-07 | Open ToolJet Marketplace submit page (new tab)ToolJet Marketplace details |
| 273 | 84 | Twine | 60 | Link type unknown | twine.net | Design galleries | Free | Moderate | High | Verified live | Create a founder or developer portfolio and publish an your tool build case study with screenshots, process, outcomes, and the live project link. | The portfolio must represent genuine work and use original assets plus a substantive project description. | Official Twine portfolio guidance checked 2026-08-07 | Open Twine submit page (new tab)Twine details |
| 274 | 84 | Typst Universe | 60 | Link type unknown | typst.app | Software directories | Free | Moderate | High | Verified live | Build a reusable Typst privacy, accessibility, or document-checking package with a valid manifest, docs, examples, and tests, then submit it to the official packages repository. | Package must provide real reusable Typst functionality; namespace, versioning, documentation, licensing, and review rules apply. | Official Typst packages repository and Universe instructions checked 2026-08-05 | Open Typst Universe submit page (new tab)Typst Universe details |
| 275 | 84 | Unity Asset Store | 90 | Link type unknown | unity.com | Marketplaces and app stores | Free | Moderate | High | Verified live | Build a polished Unity editor utility or SDK for a relevant your tool service and submit it with demos, documentation and support details. | Publisher verification, technical validation, legal rights and marketplace review apply; do not repackage generic or unlicensed assets. | 2026-08-03 | Open Unity Asset Store submit page (new tab)Unity Asset Store details |
| 276 | 84 | Uptodown | 80 | Nofollow | uptodown.com | Software directories | Free | Moderate | High | Needs checking | Register as a developer and upload your app or ask the team to list it. | Apps are scanned and checked for malware before publishing. | Added 2026-11-01 | Open Uptodown submit page (new tab)Uptodown details |
| 277 | 84 | Vercel Integrations Marketplace | 90 | Link type unknown | vercel.com | Marketplaces and app stores | Free | Moderate | High | Live, conditional | Build an your tool Vercel integration, distribute its page, gain adoption, then apply for Marketplace visibility. | Community integrations can use direct pages; Marketplace listing generally requires 500 active installs and review. | https://vercel.com/docs/integrations/create-integration | Open Vercel Integrations Marketplace submit page (new tab)Vercel Integrations Marketplace details |
| 278 | 84 | Wakelet | 80 | Nofollow | wakelet.com | Publishing platforms | Free | Moderate | High | Not submitted | Publish a well-organized privacy-toolkit collection containing authoritative resources plus selected your tool utilities. | Starter limits collections and items; avoid a collection made only of self-links and expect UGC or redirect handling. | 2026-08-03 | Open Wakelet submit page (new tab)Wakelet details |
| 279 | 84 | Wikiversity | 85 | Nofollow | 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 |
| 280 | 84 | Windmill Hub | 55 | Link type unknown | windmill.dev | Communities and forums | Free | Moderate | High | Verified live | Publish a reusable your tool-backed privacy or security script, flow, app, or resource type for the public Windmill Hub. | Submission must be reusable and documented; Windmill team reviews and approves community Hub entries. | 2026-08-05 | Open Windmill Hub submit page (new tab)Windmill Hub details |
| 281 | 84 | Working Not Working | 50 | Link type unknown | 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 |
| 282 | 84 | Xero App Store | 85 | Nofollow | developer.xero.com | Marketplaces and app stores | Free | Moderate | High | Live, conditional | Build an your tool accounting/privacy integration, validate it with customers, certify and publish it in the Xero App Store. | Requires a real Xero integration and at least three customers for certification; technical and partner review apply. | https://developer.xero.com/static/otherfiles/Grow-with-the-Xero-App-Store.pdf | Open Xero App Store submit page (new tab)Xero App Store details |
| 283 | 84 | YouTube | 100 | Nofollow | youtube.com | Profiles and entities | Free | Moderate | High | Not submitted | Create tutorials for top your tool tools with links. | Needs useful videos; links mostly referral/brand. | 2026-07-30 | Open YouTube submit page (new tab)YouTube details |
| 284 | 84 | YunoHost Apps | 55 | Link type unknown | 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 |
| 285 | 84 | Zed Extensions | 65 | Link type unknown | zed.dev | Marketplaces and app stores | Free | Moderate | High | Not submitted | Create a sandbox-compatible Zed extension for local secret, Unicode, or privacy checks, test it, publish its repository, and submit the registry pull request. | Extension ID must be unique, licensing acceptable, functionality non-duplicative, and repository public; review controls inclusion and listing links. | 2026-08-03 | Open Zed Extensions submit page (new tab)Zed Extensions details |
| 286 | 84 | Zenodo | 85 | Nofollow | zenodo.org | Software directories | Free | Moderate | High | Verified live | Publish a genuine open your tool dataset, benchmark, software release, poster, or reproducible research artifact and connect its related identifier to your tool. | Not for marketing PDFs. Upload a reusable artifact with accurate creators, license, metadata, and persistent record. | https://help.zenodo.org/docs/deposit/create-new-upload/ | Open Zenodo submit page (new tab)Zenodo details |
| 287 | 84 | Zoom App Marketplace | 95 | Link type unknown | zoom.us | Marketplaces and app stores | Free | Moderate | High | Verified live | Build a minimal-scope Zoom app that sends selected meeting content to an explicit your tool privacy or redaction workflow and links its support, privacy, and documentation pages. | Public apps undergo functional and security review; dedicated support, terms, privacy policy, documentation, and minimum permissions are required. | Official Zoom app distribution documentation checked 2026-08-07 | Open Zoom App Marketplace submit page (new tab)Zoom App Marketplace details |
| 288 | 83 | Coda Gallery Packs | 85 | Nofollow | coda.io | Marketplaces and app stores | Free + paid tier | Quick | High | Verified live | Build a useful Coda Pack that connects to your tool functionality and publish it to the Gallery with documentation and support links. | Pack must be secure, functional and compliant with Coda data, authentication and publishing policies. | Official Coda help article checked 2026-07-30 | Open Coda Gallery Packs submit page (new tab)Coda Gallery Packs details |
| 289 | 83 | Contra | 75 | Nofollow | contra.com | Startup directories | Free + paid tier | Quick | High | Not submitted | Create the founder or studio portfolio and publish your tool as a detailed product case study with the live project link. | Use a real professional identity and show genuine work, process, and outcomes; do not create a shell profile only for a backlink. | 2026-08-03 | Open Contra submit page (new tab)Contra details |
| 290 | 83 | Crunchbase | 90 | Nofollow | crunchbase.com | Startup directories | Free + paid tier | Quick | High | Not submitted | Create/claim company profile linking your tool/Anslation. | High authority entity/profile; company details needed. | 2026-07-30 | Open Crunchbase submit page (new tab)Crunchbase details |
| 291 | 83 | Eventbrite | 90 | Nofollow | eventbrite.com | Profiles and entities | Free + paid tier | Quick | High | Verified live | Host a genuine your tool privacy/tool workshop or webinar; add your tool in the organizer website field and useful event description. | Do not create fake events or thin SEO pages; publish only a real scheduled event with attendee value. | https://www.eventbrite.com/help/en-us/articles/161196/how-to-set-up-your-organizer-profile-page/ | Open Eventbrite submit page (new tab)Eventbrite details |
| 292 | 83 | Justdial | 80 | Nofollow | justdial.com | Business directories | Free + paid tier | Quick | High | Verified live | Create a verified your tool listing with Indian phone, address, category, hours, website, social links, and product or service details. | Mobile OTP, address, and business details are required; expect sales upsells and keep all information consistent. | https://www.justdial.com/free-listing | Open Justdial submit page (new tab)Justdial details |
| 293 | 83 | MCP.so | 50 | Link type unknown | mcp.so | Other opportunities | Free + paid tier | Quick | High | Live, conditional | Submit a real public your tool MCP server repository with correct name, install steps and configuration details. | Free listing uses random placement and a nofollow link; only submit a working maintained MCP server. | 2026-08-04 | Open MCP.so submit page (new tab)MCP.so details |
| 294 | 83 | Observable | 80 | Nofollow | observablehq.com | Profiles and entities | Free + paid tier | Quick | High | Verified live | Publish an original interactive notebook showing transparent your tool benchmark, privacy, performance, or tool-usage data and cite the relevant your tool pages. | Use only public/non-sensitive data; public notebooks and referenced files are indexable, reusable, and must have accurate sources and licensing. | https://observablehq.com/documentation/collaboration/sharing | Open Observable submit page (new tab)Observable details |
| 295 | 83 | Odoo Apps Store | 90 | Link type unknown | odoo.com | Marketplaces and app stores | Free + paid tier | Quick | High | Verified live | Build and document an your tool Odoo module, register its repository, and upload a maintained free or paid listing. | Odoo must receive repository read access; metadata, compatibility, licensing, screenshots, and support must follow store rules. | Official Odoo Apps upload page checked 2026-08-07 | Open Odoo Apps Store submit page (new tab)Odoo Apps Store details |
| 296 | 83 | Pressbooks Self-Publisher | 75 | Link type unknown | pressbooks.com | Publishing platforms | Free + paid tier | Quick | High | Verified live | Create an accessible, openly licensed handbook or course text with structured chapters, exercises, citations, and relevant links, then make the webbook public for directory discovery. | One book per self-publisher subscription; ongoing editing requires a paid plan. Use an open license for durable open hosting/discoverability after cancellation and ensure the book is substantive, accessible, and rights-cleared. | 2026-08-03 | Open Pressbooks Self-Publisher submit page (new tab)Pressbooks Self-Publisher details |
| 297 | 83 | Qwoted | 50 | Link type unknown | qwoted.com | PR and source platforms | Free + paid tier | Quick | High | Needs checking | Create expert/source profile for media coverage requests. | Respond fast with unique founder/product data. | 2026-07-30 | Open Qwoted submit page (new tab)Qwoted details |
| 298 | 83 | Startup Stash | 55 | Dofollow | startupstash.com | Startup directories | Free + paid tier | Quick | High | Not submitted | List your tool as productivity/developer/startup resource. | Selective curation; make category fit clear. | 2026-07-30 | Open Startup Stash submit page (new tab)Startup Stash details |
| 299 | 82 | DSCI | 50 | Link type unknown | dsci.in | Other opportunities | Not stated | Quick | High | Live, conditional | Submit a corporate membership enquiry with accurate your tool cybersecurity/privacy activities and India entity details. | Industry relevance and due diligence apply; acceptance and public profile are not automatic. | 2026-08-04 | Open DSCI submit page (new tab)DSCI details |
| 300 | 82 | Kit | 75 | Nofollow | kit.com | Publishing platforms | Not stated | Quick | High | Verified live | Create a public Tool Trust Notes newsletter site with original privacy, accessibility, founder, and engineering field reports, using your tool links only where they directly support each issue. | The free plan enables one Kit-managed recommendation slot and Kit keeps earnings from that slot; paid upgrades remove limitations. Use only consented subscribers, disclose commercial relationships, and avoid recycled SEO or promotional-only issues. | 2026-08-03 | Open Kit submit page (new tab)Kit details |
Four steps that work for a new site, a SaaS or a side project. No paid link packages, nothing that risks a penalty.
Before submitting anywhere, have a one-line description, a 150-word description, a square logo and two or three screenshots ready. Every form asks for some mix of these.
Start with the free, quick rows: profile creation sites and free directories. They are one form each and build the entity signals search engines use to understand who you are.
Then pick a handful of high DA and dofollow sites that fit your niche, and write proper guest posts or launch posts for them. Ten relevant links beat a hundred random ones.
Note where you submitted and when. Recheck after a month, update stale descriptions, and never pay for bulk link packages: they put the whole site at risk.
Behind the list
Every row here starts as a line in a sheet, gets normalised into one of 16 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.
Publications that accept contributed articles. Slow and editorial, but the links are earned.
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.