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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 100 | MERLOT | 70 | Link type unknown | 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 |
| 2 | 98 | Genially | 80 | Nofollow | 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 |
| 3 | 98 | Spreaker | 85 | Nofollow | 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 |
| 4 | 95 | Educative | 75 | Sometimes dofollow | 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 |
| 5 | 95 | Podbean | 85 | Nofollow | podbean.com | Other opportunities | Free + paid tier | Moderate | Do first | Live, conditional | Publish a real your tool episode and add contextual links to resources actually discussed in its show notes. | No keyword stuffing or shell podcast; some custom show and episode website fields require Unlimited Audio or higher. | 2026-08-04 | Open Podbean submit page (new tab)Podbean details |
| 6 | 86 | Apache Airflow Ecosystem | 90 | Nofollow | 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 |
| 7 | 86 | Fourthwall | 70 | Nofollow | 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 |
| 8 | 86 | HSTS Preload List | 70 | Link type unknown | 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 |
| 9 | 86 | Listen Notes | 80 | Dofollow | 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 |
| 10 | 86 | Player FM | 80 | Nofollow | 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 |
| 11 | 86 | Pocket Casts | 70 | Link type unknown | 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 |
| 12 | 84 | Amazon Music for Podcasters | 95 | Nofollow | 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 |
| 13 | 84 | Bitrise Step Library | 70 | Link type unknown | 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 |
| 14 | 84 | Castbox | 75 | Nofollow | 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 |
| 15 | 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 |
| 16 | 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 |
| 17 | 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 |
| 18 | 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 |
| 19 | 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 |
| 20 | 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 |
| 21 | 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 |
| 22 | 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 |
| 23 | 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 |
| 24 | 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 |
| 25 | 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 |
| 26 | 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 |
| 27 | 81 | Apple Podcasts for Creators | 100 | Nofollow | podcasters.apple.com | Other opportunities | Free + paid tier | Moderate | High | Live, conditional | Submit a genuine your tool podcast RSS feed in Podcasts Connect and include the official show website in valid metadata. | Requires at least one episode, compliant RSS, artwork, content rights, technical validation, and Apple review. | 2026-08-05 | Open Apple Podcasts for Creators submit page (new tab)Apple Podcasts for Creators details |
| 28 | 81 | Envato Tuts+ | 90 | Link type unknown | 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 |
| 29 | 81 | Luma | 80 | Nofollow | luma.com | Other opportunities | Free + paid tier | Moderate | High | Live, conditional | Publish a real your tool webinar, demo or workshop with a contextual canonical link in its event details. | Event details and host identity must be genuine; do not create empty or duplicate promotional events. | 2026-08-05 | Open Luma submit page (new tab)Luma details |
| 30 | 81 | PreventionWeb | 75 | Link type unknown | 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 |
| 31 | 81 | Replit | 85 | Nofollow | replit.com | Other opportunities | Free + paid tier | Moderate | High | Verified live | Publish a focused open your tool demo or developer utility and link its canonical your tool page from the app and project description. | A real working app is required; publishing may request a payment method and hosting usage can cost money. | https://docs.replit.com/learn/projects-and-artifacts/replit-deployments | Open Replit submit page (new tab)Replit details |
| 32 | 81 | Skillshare | 90 | Nofollow | skillshare.com | Other opportunities | Free + paid tier | Moderate | High | Verified live | Apply with an original class outline and teaching sample for privacy-safe design, accessibility, or a practical productivity workflow, then build the class project and lessons if approved. | First-time teachers require approval; applications are currently English-only and must fit accepted or in-demand categories. Every class must meet content and class-quality guidelines and cannot function as an advertisement. | 2026-08-03 | Open Skillshare submit page (new tab)Skillshare details |
| 33 | 80 | NASSCOM Membership | 70 | Link type unknown | nasscom.in | Other opportunities | Not stated | Moderate | High | Live, conditional | Apply using an India-registered your tool company/startup and provide the required entity and revenue documents. | Due diligence may take 10–15 business days and include documents, calls or a site visit; membership is not guaranteed. | 2026-08-04 | Open NASSCOM Membership submit page (new tab)NASSCOM Membership details |
| 34 | 68 | itch.io | 90 | Nofollow | 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 |
| 35 | 66 | ArtStation | 85 | Nofollow | 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 |
| 36 | 66 | CK-12 FlexBooks | 80 | Link type unknown | 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 |
| 37 | 66 | Homebrew | 75 | Link type unknown | 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 |
| 38 | 66 | Humanitarian Data Exchange | 80 | Link type unknown | 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 |
| 39 | 66 | OSF | 85 | Nofollow | 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 |
| 40 | 66 | ReliefWeb | 85 | Link type unknown | 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 |
| 41 | 64 | Bugcrowd Public Programs | 80 | Nofollow | bugcrowd.com | Other opportunities | Not stated | Quick | Medium | Verified live | Launch a properly scoped your tool vulnerability disclosure or public bug-bounty program. | Launch only after security hardening, legal safe-harbor rules, response SLAs, triage ownership, and budget are ready. | Official Bugcrowd program FAQ checked 2026-08-07 | Open Bugcrowd Public Programs submit page (new tab)Bugcrowd Public Programs details |
| 42 | 63 | BCcampus Open Collection | 70 | Link type unknown | bccampus.ca | Other opportunities | Free + paid tier | Moderate | Medium | Verified live | Publish a Canadian-ready, openly licensed privacy or digital-citizenship textbook and use Contribute → Suggest a Textbook. | Needs textbook-style objectives and activities, editable open licence/source files, accessible formats and Canadian relevance. | 2026-08-05 — https://collection.bccampus.ca/about/ | Open BCcampus Open Collection submit page (new tab)BCcampus Open Collection details |
| 43 | 63 | Buzzsprout | 85 | Sometimes dofollow | buzzsprout.com | Other opportunities | Free + paid tier | Moderate | Medium | Live, conditional | Launch a real your tool educational podcast, complete its public site, and cite relevant tools and sources in useful show notes. | Choose one primary host; publish original episodes and do not duplicate feeds solely to manufacture links. | 2026-08-05 | Open Buzzsprout submit page (new tab)Buzzsprout details |
| 44 | 63 | Calaméo | 85 | Nofollow | calameo.com | Other opportunities | Free + paid tier | Moderate | Medium | Verified live | Publish a polished original guide, research brief, or accessibility zine as a public document, with useful references and a relevant your tool link inside the editorial content. | Public publications are searchable and reusable through platform features; upload only lawful content AltFTool owns or licenses. BASIC includes limited features/advertising, and abusive SEO, spam, or promotional document dumping is explicitly prohibited. | 2026-08-03 | Open Calaméo submit page (new tab)Calaméo details |
| 45 | 63 | Cargo | 75 | Sometimes dofollow | cargo.site | Other opportunities | Free + paid tier | Moderate | Medium | Live, conditional | Create an authentic your tool or founder design portfolio with substantive case studies and contextual links to shipped tools. | Use only real design/product work; public pages may be indexed, but do not create a thin backlink microsite. | 2026-08-04 | Open Cargo submit page (new tab)Cargo details |
| 46 | 63 | Interoperable Europe / Joinup Solutions | 95 | Link type unknown | 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 |
| 47 | 63 | The Hacker News | 85 | Sometimes dofollow | 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 |
| 48 | 63 | Zotero Groups | 80 | Nofollow | zotero.org | Other opportunities | Free + paid tier | Moderate | Medium | Verified live | Create a public privacy-tool research library with credible standards, papers, and references, including only genuinely relevant your tool documentation. | Curate a real scholarly collection rather than a promotional list; public-open groups cannot share files, and visibility depends on settings. | Official Zotero Groups documentation checked 2026-08-07 | Open Zotero Groups submit page (new tab)Zotero Groups details |
| 49 | 62 | IBM Cloud Catalog | 95 | Nofollow | ibm.com | Other opportunities | Not stated | Moderate | Medium | Verified live | Package a deployable self-hosted your tool architecture for IBM Cloud, complete Partner Center onboarding, and request public catalog approval. | A working deployable architecture, complete onboarding checklist, testing, approval, ongoing maintenance, and deprecation management are required. | Official IBM Cloud catalog publishing documentation checked 2026-08-07 | Open IBM Cloud Catalog submit page (new tab)IBM Cloud Catalog details |
| 50 | 62 | Red Hat Ecosystem Catalog | 95 | Link type unknown | redhat.com | Other opportunities | Not stated | Moderate | Medium | Verified live | Package a supported self-hosted your tool edition or integration for RHEL or OpenShift and complete Red Hat Partner Validation for a catalog page. | Must genuinely run on and support RHEL or OpenShift; partner statements, documentation, validation, and Red Hat review are required. | Official Red Hat Partner Validation Guide for 2026 checked 2026-08-07 | Open Red Hat Ecosystem Catalog submit page (new tab)Red Hat Ecosystem Catalog details |
| 51 | 56 | Format | 75 | Sometimes dofollow | format.com | Other opportunities | Paid | Moderate | Medium | Not submitted | Create a founder or product-design portfolio with an original your tool case study and add the canonical site as an external menu link. | This is a paid portfolio platform; the case study should demonstrate real work and should not exist only to manufacture a link. | 2026-08-03 | Open Format submit page (new tab)Format details |
| 52 | 56 | Lemon Squeezy | 70 | Nofollow | lemonsqueezy.com | Other opportunities | Paid | Moderate | Medium | Live, conditional | Create a legitimate free or paid your tool resource or software product and publish it on a branded hosted storefront. | Store activation requires identity and business review; never create a dummy product only for a link. | 2026-08-05 | Open Lemon Squeezy submit page (new tab)Lemon Squeezy details |
| 53 | 56 | OpenSSF | 70 | Link type unknown | openssf.org | Other opportunities | Paid | Moderate | Medium | Live, conditional | Apply as a General Member only if your tool will meaningfully contribute engineering or resources to open-source security. | Not worthwhile for a backlink alone; free Associate tier is restricted to qualifying nonprofits, academia or government. | 2026-08-04 | Open OpenSSF submit page (new tab)OpenSSF details |
| 54 | 46 | Maven Central | 75 | Link type unknown | 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 |
| 55 | 46 | Preprints.org | 75 | Link type unknown | 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 |
| 56 | 46 | Sellfy | 75 | Link type unknown | 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 |
| 57 | 43 | Springwise | 75 | Sometimes dofollow | 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 |
| 58 | 43 | TechSoup | 75 | Link type unknown | techsoup.org | Other opportunities | Free | Involved | Later | Needs checking | If your tool helps nonprofits or libraries, reach out about their resource articles or partner programme. | Editorial decision; only for tools with a clear nonprofit use. | Added 2026-11-01 | Open TechSoup submit page (new tab)TechSoup details |
| 59 | 38 | FIDO Alliance Certified Products | 75 | Link type unknown | fidoalliance.org | Other opportunities | Paid | Quick | Later | Live, conditional | Only if your tool builds a real commercial FIDO2 or passkey server, complete conformance and interoperability testing and submit it. | Requires a commercial implementation and complete evidence; product certification is protocol-specific and higher assurance programs cost more. | 2026-08-05 official FIDO functional certification and fees | Open FIDO Alliance Certified Products submit page (new tab)FIDO Alliance Certified Products details |
| 60 | 38 | FIRST | 75 | Link type unknown | first.org | Other opportunities | Paid | Quick | Later | Verified live | Apply as Associate or full Member only after operating a credible incident-response team/program and completing sponsorship/review. | Full membership requires sponsors and SIM3/site-visit process; associate status needs a valid response mission and contribution value. | 2026-08-05 — https://www.first.org/membership/ | Open FIRST submit page (new tab)FIRST details |
| 61 | 38 | IAPP | 80 | Link type unknown | iapp.org | Other opportunities | Paid | Quick | Later | Live, conditional | Consider organizational membership if your tool actively participates in privacy or AI governance; complete the member directory profile. | Genuine membership and industry participation only; not a low-cost SEO listing. | 2026-08-04 | Open IAPP submit page (new tab)IAPP details |
| 62 | 36 | Directory of Open Access Books | 70 | Link type unknown | doabooks.org | Other opportunities | Paid | Moderate | Later | Verified live | Apply only after your tool operates a genuine OA scholarly-book publishing program, then submit peer-reviewed privacy-tech books. | Publisher-level path, not a one-off product listing; transparent peer review, open licences, HTTPS publishing site and scholarly books required. | 2026-08-05 — https://www.doabooks.org/en/publishers/join-doab | Open Directory of Open Access Books submit page (new tab)Directory of Open Access Books details |
| 63 | 36 | OASIS Open | 80 | Link type unknown | oasis-open.org | Other opportunities | Paid | Moderate | Later | Verified live | Join only to contribute substantively to relevant security or privacy technical committees and use approved organization metadata. | Reconfirm current dues before purchase; membership is not endorsement and lower tiers may not include a linked logo. | 2026-08-05 official OASIS join and members pages | Open OASIS Open submit page (new tab)OASIS Open details |
| 64 | 36 | Open Source Initiative | 85 | Link type unknown | opensource.org | Other opportunities | Paid | Moderate | Later | Verified live | After releasing meaningful OSI-licensed code, consider sponsorship only when supporting OSI aligns with your tool strategy. | Financial sponsorship is not certification, governance influence or product endorsement; do not pay solely for a backlink. | 2026-08-05 official OSI benefits and sponsorship document | Open Open Source Initiative submit page (new tab)Open Source Initiative details |
| 65 | 36 | Stan Store | 70 | Nofollow | stan.store | Other opportunities | Paid | Moderate | Later | Live, conditional | Use only if your tool has a genuine creator offer, guide or service; complete the storefront and connect relevant site pages. | Paid commercial fit required; do not open an empty store solely for a backlink. | 2026-08-04 | Open Stan Store submit page (new tab)Stan Store 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.