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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.
Free, one short form, strongest sites first. No paid tier needed.
google.com
github.com
toolhub.wikimedia.org
wordpress.org
flickr.com
patreon.com
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1301 | 46 | BioImage.IO | 40 | Link type unknown | bioimage.io | Communities and forums | Free | Moderate | Later | Verified live | Contribute a documented bioimaging privacy or de-identification model, application integration, or other qualifying resource linked to your tool. | Must genuinely serve bioimaging, follow the BioImage.IO resource specification and model card requirements, and pass community validation. | 2026-08-05 — https://bioimage.io/docs/ | Open BioImage.IO submit page (new tab)BioImage.IO details |
| 1302 | 46 | Bits and Pieces | 60 | Nofollow | bitsrc.io | Guest posting sites | Free | Moderate | Later | Needs checking | Ask to join as a writer and submit frontend architecture, JavaScript or component-design articles. | Editors accept only original technical posts; links are usually nofollow. | Added 2026-11-01 | Open Bits and Pieces submit page (new tab)Bits and Pieces details |
| 1303 | 46 | BleepingComputer Forums | 90 | Nofollow | bleepingcomputer.com | Communities and forums | Free | Moderate | Later | Needs checking | Join, help with tech support threads and add your site to your profile where allowed. | Strict moderation; link drops in threads count as spam. | Added 2026-11-01 | Open BleepingComputer Forums submit page (new tab)BleepingComputer Forums details |
| 1304 | 46 | Blogger | 95 | Sometimes dofollow | blogger.com | Publishing platforms | Free | Moderate | Later | Not submitted | Create official your tool update/tutorial blog if needed. | Avoid duplicate content; canonical strategy needed. | 2026-07-30 | Open Blogger submit page (new tab)Blogger details |
| 1305 | 46 | Blogosphere | — | Link type unknown | text.blogosphere.app | Publishing platforms | Free | Moderate | Later | Not submitted | Submit your tool (or its blog/feed where required) under productivity, privacy or developer tools. | Human review may apply; use a natural brand title and avoid keyword stuffing. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/blogosphere | Open Blogosphere submit page (new tab)Blogosphere details |
| 1306 | 46 | Blogroll.org | 40 | Link type unknown | blogroll.org | Publishing platforms | Free | Moderate | Later | Not submitted | Submit your tool (or its blog/feed where required) under productivity, privacy or developer tools. | Human review may apply; use a natural brand title and avoid keyword stuffing. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/blogroll-org | Open Blogroll.org submit page (new tab)Blogroll.org details |
| 1307 | 46 | Blogs.hn | — | Link type unknown | blogs.hn | Publishing platforms | Free | Moderate | Later | Needs checking | Submit your tool (or its blog/feed where required) under productivity, privacy or developer tools. | Human review may apply; use a natural brand title and avoid keyword stuffing. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/blogs-hn | Open Blogs.hn submit page (new tab)Blogs.hn details |
| 1308 | 46 | Braintrust | 55 | Nofollow | usebraintrust.com | Profiles and entities | Free | Moderate | Later | Needs checking | Apply as talent and fill in your profile with skills and website. | Applications are screened; not everyone is accepted. | Added 2026-11-01 | Open Braintrust submit page (new tab)Braintrust details |
| 1309 | 46 | Bubble Showcase | 80 | Nofollow | bubble.io | Marketplaces and app stores | Free | Moderate | Later | Needs checking | Only submit if you build a Bubble-related app/template. | Not fit unless Bubble asset exists. | 2026-07-30 | Open Bubble Showcase submit page (new tab)Bubble Showcase details |
| 1310 | 46 | BuildInPublic.page | — | Link type unknown | buildinpublic.page | Startup directories | Free | Moderate | Later | Live, conditional | Join with an authentic verified builder account and showcase your tool milestones and assets. | Do not invent revenue or milestones; verify onboarding availability before planning content. | 2026-08-03 | Open BuildInPublic.page submit page (new tab)BuildInPublic.page details |
| 1311 | 46 | Business-Software.com | 55 | Link type unknown | business-software.com | Software directories | Free | Moderate | Later | Not submitted | Create a truthful your tool/founder profile or content page and add the website link where allowed. | Use a real brand/founder identity; do not create thin duplicate pages. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/business-software-com | Open Business-Software.com submit page (new tab)Business-Software.com details |
| 1312 | 46 | CallUpContact | 40 | Link type unknown | callupcontact.com | Business directories | Free | Moderate | Later | Not submitted | Create company listing with website link. | General directory; verify quality before use. | 2026-07-30 | Open CallUpContact submit page (new tab)CallUpContact details |
| 1313 | 46 | Codeberg Pages | 50 | Dofollow | codeberg.page | Publishing platforms | Free | Moderate | Later | Needs checking | Host a static site for a free or open-source project from a Codeberg repository. | Codeberg is meant for free and open-source projects; commercial-only sites are not welcome. | Added 2026-11-01 | Open Codeberg Pages submit page (new tab)Codeberg Pages details |
| 1314 | 46 | Commerce Cream | 30 | Link type unknown | commercecream.com | Design galleries | Free | Moderate | Later | Needs checking | Submit if a commerce-style/tool landing page fits. | Mostly Shopify/ecommerce; weak fit. | 2026-07-30 | Open Commerce Cream submit page (new tab)Commerce Cream details |
| 1315 | 46 | CoMSES Computational Model Library | 50 | Link type unknown | comses.net | Review platforms | Free | Moderate | Later | Verified live | Publish a documented social, ecological, or computational model with source, narrative documentation, contributors, and reproducibility metadata. | Only genuine computational models qualify; optional peer review and DOI require stronger documentation and reproducibility. | Official CoMSES publishing guide and FAQ checked 2026-08-05 | Open CoMSES Computational Model Library submit page (new tab)CoMSES Computational Model Library details |
| 1316 | 46 | CSDMS Model Repository | 90 | Link type unknown | csdms.colorado.edu | Software directories | Free | Moderate | Later | Verified live | Open-source a relevant geoscience model or component, complete the model questionnaire, and provide its code archive for CSDMS testing. | Must be an actual Earth-surface or geoscience model; staff may compile and run it, and BMI compatibility is encouraged. | Official CSDMS contribute-model guide checked 2026-08-05 | Open CSDMS Model Repository submit page (new tab)CSDMS Model Repository details |
| 1317 | 46 | CTAN | 75 | Link type unknown | ctan.org | Developer registries | Free | Moderate | Later | Live, conditional | Create a genuine LaTeX privacy, redaction or document-safety package and include its exact your tool project homepage in the upload metadata. | Requires distributable source, documentation, licence and maintainer rights; every upload is manually reviewed. | 2026-08-05 official CTAN upload form | Open CTAN submit page (new tab)CTAN details |
| 1318 | 46 | Cults | 65 | Nofollow | cults3d.com | Profiles and entities | Free | Moderate | Later | Needs checking | Open a designer profile and upload free or paid 3D models. | Uploaded files must be your own designs. | Added 2026-11-01 | Open Cults submit page (new tab)Cults details |
| 1319 | 46 | CustomerThink | 60 | Sometimes dofollow | customerthink.com | Guest posting sites | Free | Moderate | Later | Needs checking | Register and apply to become an author, then publish articles on customer experience, CRM or service. | Posts are moderated and must offer insight rather than promote a vendor. | Added 2026-11-01 | Open CustomerThink submit page (new tab)CustomerThink details |
| 1320 | 46 | Cytoscape App Store | 55 | Link type unknown | apps.cytoscape.org | Marketplaces and app stores | Free | Moderate | Later | Verified live | Build a Cytoscape 3 app for a genuine graph privacy, provenance or network-audit workflow, provide website/source metadata and submit its first release for administrator approval. | Must add real Cytoscape functionality and remain compatible; the first release is manually approved and a generic external-link launcher is inappropriate. | 2026-08-05 | Open Cytoscape App Store submit page (new tab)Cytoscape App Store details |
| 1321 | 46 | Datafloq | 55 | Sometimes dofollow | datafloq.com | Guest posting sites | Free | Moderate | Later | Needs checking | Create an account and submit an article on big data, AI or emerging technology for editorial review. | Articles are moderated for quality and must not be thinly veiled product promotion. | Added 2026-11-01 | Open Datafloq submit page (new tab)Datafloq details |
| 1322 | 46 | Debian Package Archive | 90 | Link type unknown | packages.debian.org | Developer registries | Free | Moderate | Later | Verified live | Create a policy-compliant Debian package for a stable useful your tool CLI, file the appropriate intent-to-package request, include accurate upstream metadata and secure a Debian sponsor for upload. | High-effort maintainership commitment: must be distributable, lintian-clean, reproducibly buildable and useful to Debian users; non-developers need sponsor review, and acceptance into NEW is not guaranteed. | 2026-08-05 | Open Debian Package Archive submit page (new tab)Debian Package Archive details |
| 1323 | 46 | designboom | 85 | Sometimes dofollow | designboom.com | Design galleries | Free | Moderate | Later | Needs checking | Submit a design or architecture project through their DIY submission tool with images and text. | Editorial selection; product-design and tech projects need a strong design angle. | Added 2026-11-01 | Open designboom submit page (new tab)designboom details |
| 1324 | 46 | Designer News | 60 | Nofollow | designernews.co | Design galleries | Free | Moderate | Later | Needs checking | Share design/tool launch if genuinely useful. | Community norms; no bare link drop. | 2026-07-30 | Open Designer News submit page (new tab)Designer News details |
| 1325 | 46 | Dev Genius | 45 | Nofollow | devgenius.io | Guest posting sites | Free | Moderate | Later | Needs checking | Request writer access and submit coding tutorials or engineering write-ups through Medium. | Original technical content only; links are typically nofollow. | Added 2026-11-01 | Open Dev Genius submit page (new tab)Dev Genius details |
| 1326 | 46 | Differ | 30 | Link type unknown | differ.blog | Publishing platforms | Free | Moderate | Later | Needs checking | Publish or cross-post articles with a canonical link to your original. | Small platform; worth it mainly as a syndication copy. | Added 2026-11-01 | Open Differ submit page (new tab)Differ details |
| 1327 | 46 | DUB Registry | 60 | Link type unknown | code.dlang.org | Developer registries | Free | Moderate | Later | Live, conditional | Publish a useful D client library or privacy utility with accurate homepage and repository metadata in dub.json or dub.sdl. | Requires maintained public D source and valid package metadata; verify that the desired homepage field appears on the public listing. | 2026-08-05 official DUB Registry and package metadata documentation | Open DUB Registry submit page (new tab)DUB Registry details |
| 1328 | 46 | ElevenForum | 50 | Link type unknown | elevenforum.com | Communities and forums | Free | Moderate | Later | Needs checking | Help Windows 11 users and keep your site on your profile. | New accounts posting links are often held for review. | Added 2026-11-01 | Open ElevenForum submit page (new tab)ElevenForum details |
| 1329 | 46 | Elm Packages | 60 | Nofollow | package.elm-lang.org | Developer registries | Free | Moderate | Later | Needs checking | Publish an Elm package with docs and a repository link. | Semver is enforced and docs are required. | Added 2026-11-01 | Open Elm Packages submit page (new tab)Elm Packages details |
| 1330 | 46 | Entrepreneur's Handbook | 60 | Nofollow | entrepreneurshandbook.co | Guest posting sites | Free | Moderate | Later | Needs checking | Apply to write for the publication and submit startup or founder lessons through Medium. | Editors pick experience-based stories and reject promotional posts; links are usually nofollow. | Added 2026-11-01 | Open Entrepreneur's Handbook submit page (new tab)Entrepreneur's Handbook details |
| 1331 | 46 | FilePuma | 60 | Link type unknown | 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 |
| 1332 | 46 | Finextra Community | 75 | Sometimes dofollow | finextra.com | Publishing platforms | Free | Moderate | Later | Needs checking | Register as a member and publish blog posts on fintech, payments or banking technology. | Blogs are moderated and must offer insight; press releases posted as blogs are removed. | Added 2026-11-01 | Open Finextra Community submit page (new tab)Finextra Community details |
| 1333 | 46 | Fiverr | 95 | Nofollow | fiverr.com | Profiles and entities | Free | Moderate | Later | Needs checking | Create a seller profile and gigs that describe services you really offer. | External links in gigs and messages are restricted; follow their off-platform rules. | Added 2026-11-01 | Open Fiverr submit page (new tab)Fiverr details |
| 1334 | 46 | Fonts In Use | 65 | Sometimes dofollow | fontsinuse.com | Design galleries | Free | Moderate | Later | Needs checking | Document a project that uses notable typography and credit your site or studio. | Entries are edited for accuracy; self-submissions need genuine typographic interest. | Added 2026-11-01 | Open Fonts In Use submit page (new tab)Fonts In Use details |
| 1335 | 46 | FounderApp | — | Link type unknown | founderapp.com | Startup directories | Free | Moderate | Later | Live, conditional | Build the founder/company profile and add accurate your tool links, stage and product details. | New beta platform; verify that the finished company profile is public before investing time. | 2026-08-03 | Open FounderApp submit page (new tab)FounderApp details |
| 1336 | 46 | FoundrList | — | Link type unknown | foundrlist.com | Profiles and entities | Free | Moderate | Later | Needs checking | Create a truthful your tool/founder profile or content page and add the website link where allowed. | Use a real brand/founder identity; do not create thin duplicate pages. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/foundrlist | Open FoundrList submit page (new tab)FoundrList details |
| 1337 | 46 | FreeBSD Ports Collection | 85 | Link type unknown | freebsd.org | Developer registries | Free | Moderate | Later | Verified live | Create and thoroughly test a FreeBSD port for a stable your tool CLI or desktop utility, include its canonical project website in WWW metadata and submit the patch through FreeBSD Bugzilla. | Anyone may submit, but the software must have a stable source release, acceptable licence, correct checksums/plist and clean builds; a volunteer maintainer is mandatory and review can take months. | 2026-08-05 | Open FreeBSD Ports Collection submit page (new tab)FreeBSD Ports Collection details |
| 1338 | 46 | Freepik Contributor | 90 | Nofollow | freepik.com | Marketplaces and app stores | Free | Moderate | Later | Needs checking | Become a contributor and upload vectors, photos or templates. | Files are reviewed; AI content must be labelled. | Added 2026-11-01 | Open Freepik Contributor submit page (new tab)Freepik Contributor details |
| 1339 | 46 | Galaxy ToolShed | 55 | Link type unknown | toolshed.g2.bx.psu.edu | Marketplaces and app stores | Free | Moderate | Later | Verified live | Build a tested Galaxy wrapper for an your tool medical-data privacy or de-identification workflow and publish it in the main ToolShed. | Only suitable for a functioning Galaxy utility; develop and test locally, follow Planemo and IUC practices, then create and upload a repository. | 2026-08-05 — https://galaxyproject.org/toolshed/ | Open Galaxy ToolShed submit page (new tab)Galaxy ToolShed details |
| 1340 | 46 | Game Developer Blogs | 85 | Sometimes dofollow | gamedeveloper.com | Publishing platforms | Free | Moderate | Later | Needs checking | Create an account and publish a member blog on game development, tools or postmortems. | Blogs are reviewed and must be about game development; promotional posts may not be featured. | Added 2026-11-01 | Open Game Developer Blogs submit page (new tab)Game Developer Blogs details |
| 1341 | 46 | Game Jolt | 75 | Nofollow | gamejolt.com | Profiles and entities | Free | Moderate | Later | Needs checking | Make a creator profile and publish your game with links to your site. | Content guidelines apply; empty game pages may be hidden. | Added 2026-11-01 | Open Game Jolt submit page (new tab)Game Jolt details |
| 1342 | 46 | Gamedev.js | — | Link type unknown | gamedevjs.com | Publishing platforms | Free | Moderate | Later | Needs checking | Enter the yearly Gamedev.js Jam or send your web game or article for their HTML5 game dev newsletter. | Editorial choice for the newsletter; the jam runs once a year on itch.io. | Added 2026-11-01 | Open Gamedev.js submit page (new tab)Gamedev.js details |
| 1343 | 46 | GameDistribution | 55 | Link type unknown | gamedistribution.com | Marketplaces and app stores | Free | Moderate | Later | Needs checking | Create a developer account, upload your HTML5 game and let it be syndicated to partner game sites, with your studio named on the listing. | Their SDK must be integrated before games are approved; revenue comes from ads they serve. | Added 2026-11-01 | Open GameDistribution submit page (new tab)GameDistribution details |
| 1344 | 46 | GameMonetize | — | Link type unknown | gamemonetize.com | Marketplaces and app stores | Free | Moderate | Later | Needs checking | Register as a developer, upload your HTML5 game and integrate their SDK so it can be distributed to partner sites. | Games are reviewed before distribution; SDK integration is required. | Added 2026-11-01 | Open GameMonetize submit page (new tab)GameMonetize details |
| 1345 | 46 | GamePix | — | Link type unknown | gamepix.com | Marketplaces and app stores | Free | Moderate | Later | Needs checking | Submit an HTML5 game through their developer programme to have it listed and distributed with a studio credit. | Games are reviewed for quality and technical fit before publishing. | Added 2026-11-01 | Open GamePix submit page (new tab)GamePix details |
| 1346 | 46 | GIPHY | 95 | Nofollow | giphy.com | Profiles and entities | Free | Moderate | Later | Needs checking | Create a brand or artist channel, upload GIFs and apply for verification. | Unverified channels are not searchable; content is moderated. | Added 2026-11-01 | Open GIPHY submit page (new tab)GIPHY details |
| 1347 | 46 | Gitee | 85 | Link type unknown | gitee.com | Profiles and entities | Free | Moderate | Later | Needs checking | Create an account, add a profile link and optionally mirror an open-source repo. | Real-name verification is required for some features; content follows Chinese rules. | Added 2026-11-01 | Open Gitee submit page (new tab)Gitee details |
| 1348 | 46 | GitLab Pages | 80 | Dofollow | gitlab.io | Publishing platforms | Free | Moderate | Later | Needs checking | Deploy a static docs or project site from a GitLab repository and link to your main site. | Sites must follow GitLab's usage terms; spam or phishing pages are removed. | Added 2026-11-01 | Open GitLab Pages submit page (new tab)GitLab Pages details |
| 1349 | 46 | Hirely Startup Directory | — | Link type unknown | hirely.ma | Startup directories | Free | Moderate | Later | Live, conditional | Submit the company profile with logo, industry, stage, location and official your tool URL. | Confirm regional/category fit and provide a real business contact; approval is not guaranteed. | 2026-08-03 | Open Hirely Startup Directory submit page (new tab)Hirely Startup Directory details |
| 1350 | 46 | Hive | 60 | Nofollow | hive.blog | Publishing platforms | Free | Moderate | Later | Needs checking | Create a Hive account and publish posts in relevant communities, linking to your own content where useful. | Posts are public and permanent; plagiarism and spam get downvoted and flagged by the community. | Added 2026-11-01 | Open Hive submit page (new tab)Hive details |
| 1351 | 46 | HN Personal Websites | — | Link type unknown | hnpwd.github.io | Business directories | Free | Moderate | Later | Needs checking | Submit your tool (or its blog/feed where required) under productivity, privacy or developer tools. | Human review may apply; use a natural brand title and avoid keyword stuffing. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/hn-personal-websites | Open HN Personal Websites submit page (new tab)HN Personal Websites details |
| 1352 | 46 | Hugo Themes | 65 | Sometimes dofollow | themes.gohugo.io | Developer registries | Free | Moderate | Later | Needs checking | Add your Hugo theme following the theme repository submission steps. | Theme needs a README, screenshots and an open license. | Added 2026-11-01 | Open Hugo Themes submit page (new tab)Hugo Themes details |
| 1353 | 46 | Hype Desk | — | Link type unknown | hypedesk.com | Launch platforms | Free | Moderate | Later | Needs checking | Submit new your tool feature/platform launch. | Verify current submit flow. | 2026-07-30 | Open Hype Desk submit page (new tab)Hype Desk details |
| 1354 | 46 | Indie Internet Index | — | Link type unknown | iii.social | Business directories | Free | Moderate | Later | Needs checking | Submit your tool (or its blog/feed where required) under productivity, privacy or developer tools. | Human review may apply; use a natural brand title and avoid keyword stuffing. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/indie-internet-index | Open Indie Internet Index submit page (new tab)Indie Internet Index details |
| 1355 | 46 | IndieBlog.page | 35 | Dofollow | indieblog.page | Publishing platforms | Free | Moderate | Later | Needs checking | Submit your tool (or its blog/feed where required) under productivity, privacy or developer tools. | Human review may apply; use a natural brand title and avoid keyword stuffing. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/indieblog-page | Open IndieBlog.page submit page (new tab)IndieBlog.page details |
| 1356 | 46 | IndieDB | 75 | Sometimes dofollow | indiedb.com | Launch platforms | Free | Moderate | Later | Needs checking | Add your indie game, post updates and link your studio site. | Listings are reviewed; updates should be real dev news. | Added 2026-11-01 | Open IndieDB submit page (new tab)IndieDB details |
| 1357 | 46 | ioBroker Adapters | 50 | Link type unknown | iobroker.net | Developer registries | Free | Moderate | Later | Verified live | Develop a stable ioBroker adapter for a credible your tool privacy/security API, publish the npm package, test it with users and request inclusion in the official latest repository. | Adapter must perform useful automation, pass repository checks and receive ongoing maintenance; do not build a dashboard that only links out to AltFTool. | 2026-08-05 | Open ioBroker Adapters submit page (new tab)ioBroker Adapters details |
| 1358 | 46 | It's Nice That | 75 | Sometimes dofollow | itsnicethat.com | Design galleries | Free | Moderate | Later | Needs checking | Send creative work for possible editorial coverage. | Highly selective; they cover creative work, not software marketing. | Added 2026-11-01 | Open It's Nice That submit page (new tab)It's Nice That details |
| 1359 | 46 | ITQlick | 45 | Link type unknown | itqlick.com | Software directories | Free | Moderate | Later | Needs checking | Submit your SaaS product for a profile with pricing and feature data. | Info must be accurate; marketing copy gets rewritten. | Added 2026-11-01 | Open ITQlick submit page (new tab)ITQlick details |
| 1360 | 46 | Jamstack.org | 65 | Sometimes dofollow | jamstack.org | Developer registries | Free | Moderate | Later | Needs checking | Add your static site generator or headless CMS through a pull request to their GitHub repo. | Only fitting tool categories are accepted. | Added 2026-11-01 | Open Jamstack.org submit page (new tab)Jamstack.org details |
| 1361 | 46 | Java Code Geeks | 65 | Sometimes dofollow | javacodegeeks.com | Guest posting sites | Free | Moderate | Later | Needs checking | Join the partner program to syndicate your existing Java or software development posts, or submit original articles. | Only technical developer content is accepted and your original post must be on your own blog. | Added 2026-11-01 | Open Java Code Geeks submit page (new tab)Java Code Geeks details |
| 1362 | 46 | Juejin | 75 | Nofollow | juejin.cn | Communities and forums | Free | Moderate | Later | Needs checking | Write a Chinese-language technical post about your tool or open-source project. | Pure ads are removed; quality posts are recommended. | Added 2026-11-01 | Open Juejin submit page (new tab)Juejin details |
| 1363 | 46 | KillerStartups | 60 | Sometimes dofollow | killerstartups.com | Startup directories | Free | Moderate | Later | Needs checking | Submit your tool for startup feature/review. | Older media; verify current submission. | 2026-07-30 | Open KillerStartups submit page (new tab)KillerStartups details |
| 1364 | 46 | Kodi Add-ons | 70 | Link type unknown | addons.kodi.tv | Marketplaces and app stores | Free | Moderate | Later | Live, conditional | Create a genuine media-metadata privacy or local-safety add-on and submit it to Kodi's official repository. | Requires supported Python, compatible versions, licence and code review; piracy-related or promotional wrappers are prohibited. | 2026-08-05 official Kodi Submitting Add-ons guide | Open Kodi Add-ons submit page (new tab)Kodi Add-ons details |
| 1365 | 46 | Lapce Volts Registry | 45 | Link type unknown | lapce.dev | Marketplaces and app stores | Free | Moderate | Later | Verified live | Build a WASI/LSP Volt that surfaces useful your tool diagnostics for HTML or SEO configuration files, then publish it with the official Volts CLI. | Official guide is older while the registry remains live; validate the current Volt SDK/runtime and review behavior before investment, and avoid a thin marketing launcher. | 2026-08-05 | Open Lapce Volts Registry submit page (new tab)Lapce Volts Registry details |
| 1366 | 46 | Lemmy.world | 55 | Nofollow | lemmy.world | Social channels | Free | Moderate | Later | Needs checking | Join relevant communities and share your project only where self-posts are allowed. | Each community sets its own self-promotion rules. | Added 2026-11-01 | Open Lemmy.world submit page (new tab)Lemmy.world details |
| 1367 | 46 | LibraryThing | 85 | Link type unknown | librarything.com | Profiles and entities | Free | Moderate | Later | Needs checking | Authors can join the author program to get a linked author page. | You must be the actual author; pages are checked. | Added 2026-11-01 | Open LibraryThing submit page (new tab)LibraryThing details |
| 1368 | 46 | Linus Tech Tips Forum | 60 | Link type unknown | linustechtips.com | Communities and forums | Free | Moderate | Later | Needs checking | Join the community, answer questions and add your site to your profile. | Advertising has its own rules; read them before linking. | Added 2026-11-01 | Open Linus Tech Tips Forum submit page (new tab)Linus Tech Tips Forum details |
| 1369 | 46 | Lite XL Plugin Repository | 40 | Link type unknown | lite-xl.com | Marketplaces and app stores | Free | Moderate | Later | Verified live | Create a Lua plugin with real commands for your tool URL audits or JSON validation and add a conforming manifest entry to the official Lite XL plugin repository. | Manifest must pin remote commits and checksums and pass repository review; the canonical outbound link may point to source, so a direct domain backlink is not guaranteed. | 2026-08-05 | Open Lite XL Plugin Repository submit page (new tab)Lite XL Plugin Repository details |
| 1370 | 46 | LO4D | 65 | Link type unknown | lo4d.com | Software directories | Free | Moderate | Later | Needs checking | Submit your Windows app for review and malware testing. | Programs failing their antivirus checks are not listed. | Added 2026-11-01 | Open LO4D submit page (new tab)LO4D details |
| 1371 | 46 | LobeHub | 50 | Sometimes dofollow | lobehub.com | AI tool directories | Free | Moderate | Later | Needs checking | Publish your MCP server or agent to their marketplace with docs and a repository link. | Submissions go through review and must install cleanly. | Added 2026-11-01 | Open LobeHub submit page (new tab)LobeHub details |
| 1372 | 46 | Made in Webflow | 90 | Nofollow | webflow.com | Design galleries | Free | Moderate | Later | Needs checking | Submit only if your tool page/template is built in Webflow. | Not fit for current Next.js site unless Webflow asset. | 2026-07-30 | Open Made in Webflow submit page (new tab)Made in Webflow details |
| 1373 | 46 | Marginalia Search | 45 | Link type unknown | marginalia-search.com | Business directories | Free | Moderate | Later | Needs checking | Submit your tool (or its blog/feed where required) under productivity, privacy or developer tools. | Human review may apply; use a natural brand title and avoid keyword stuffing. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/marginalia-search | Open Marginalia Search submit page (new tab)Marginalia Search details |
| 1374 | 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 |
| 1375 | 46 | Minifeed | 25 | Link type unknown | minifeed.net | Business directories | Free | Moderate | Later | Needs checking | Submit your tool (or its blog/feed where required) under productivity, privacy or developer tools. | Human review may apply; use a natural brand title and avoid keyword stuffing. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/minifeed | Open Minifeed submit page (new tab)Minifeed details |
| 1376 | 46 | Ministry of Testing | 55 | Sometimes dofollow | ministryoftesting.com | Guest posting sites | Free | Moderate | Later | Needs checking | Create a community account and submit an article or short insight on software testing for review. | Content must help testers and avoid product pitches; your link goes in your profile. | Added 2026-11-01 | Open Ministry of Testing submit page (new tab)Ministry of Testing details |
| 1377 | 46 | Mirror | 70 | Link type unknown | mirror.xyz | Publishing platforms | Free | Moderate | Later | Needs checking | Publish an article with a wallet login and link back to your site in context. | The audience is mostly crypto-focused; off-topic posts get little reach. | Added 2026-11-01 | Open Mirror submit page (new tab)Mirror details |
| 1378 | 46 | Neowin Software | 80 | Sometimes dofollow | neowin.net | Software directories | Free | Moderate | Later | Needs checking | Send release notes for notable versions of your desktop software to their software news section. | Editors pick releases; minor updates are often skipped. | Added 2026-11-01 | Open Neowin Software submit page (new tab)Neowin Software details |
| 1379 | 46 | NetBSD pkgsrc | 75 | Link type unknown | netbsd.org | Developer registries | Free | Moderate | Later | Verified live | Package a stable cross-platform your tool CLI for pkgsrc, test it with pkglint and supported builds, include the canonical homepage, then submit via pkgsrc-wip or NetBSD's package bug tracker. | Source package must compile and run correctly, follow pkgsrc policy and be maintained; non-developers use pkgsrc-wip or a formal package problem report, and inclusion is reviewed. | 2026-08-05 | Open NetBSD pkgsrc submit page (new tab)NetBSD pkgsrc details |
| 1380 | 46 | Newgrounds | 85 | Nofollow | newgrounds.com | Profiles and entities | Free | Moderate | Later | Needs checking | Post your own games, animation or music and add your site to your profile. | Submissions are voted on by the community; stolen work is removed. | Added 2026-11-01 | Open Newgrounds submit page (new tab)Newgrounds details |
| 1381 | 46 | nf-core | 50 | Link type unknown | nf-co.re | Review platforms | Free | Moderate | Later | Verified live | Propose and contribute a standards-compliant your tool-related bioinformatics privacy module, subworkflow, or full Nextflow pipeline. | Must solve a real bioinformatics need, avoid overlap, use nf-core templates, include tests and docs, pass linting, review, and maintenance expectations. | 2026-08-05 — https://nf-co.re/docs/contributing/overview | Open nf-core submit page (new tab)nf-core details |
| 1382 | 46 | Nuxt Modules | 70 | Sometimes dofollow | nuxt.com | Developer registries | Free | Moderate | Later | Needs checking | Open a pull request to the Nuxt modules repository to list your module. | Module must be maintained and documented. | Added 2026-11-01 | Open Nuxt Modules submit page (new tab)Nuxt Modules details |
| 1383 | 46 | NWB NDX Catalog | 25 | Link type unknown | nwb-extensions.github.io | Marketplaces and app stores | Free | Moderate | Later | Verified live | Create a meaningful NWB extension for privacy, provenance, or consent metadata and submit its staged-extension YAML through an official pull request. | Must extend the NWB schema for a real neurodata use case with valid metadata, tests, maintainer details, and community approval. | Official NWB staged-extension and NDX catalog documentation checked 2026-08-05 | Open NWB NDX Catalog submit page (new tab)NWB NDX Catalog details |
| 1384 | 46 | Odysee | 75 | Nofollow | odysee.com | Profiles and entities | Free | Moderate | Later | Needs checking | Make a channel and link your website in the about section and video descriptions. | Content rules still apply; spam channels are hidden. | Added 2026-11-01 | Open Odysee submit page (new tab)Odysee details |
| 1385 | 46 | One Page Love | 65 | Dofollow | onepagelove.com | Design galleries | Free | Moderate | Later | Needs checking | Submit a focused one-page your tool landing page. | Only if page is single-page and polished. | 2026-07-30 | Open One Page Love submit page (new tab)One Page Love details |
| 1386 | 46 | OpenAlternative | 45 | Dofollow | openalternative.co | Software directories | Free | Moderate | Later | Not submitted | Create a truthful your tool/founder profile or content page and add the website link where allowed. | Use a real brand/founder identity; do not create thin duplicate pages. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/openalternative | Open OpenAlternative submit page (new tab)OpenAlternative details |
| 1387 | 46 | OpenEBench | 40 | Link type unknown | openebench.bsc.es | Software directories | Free | Moderate | Later | Verified live | Organize a rigorous life-science privacy-tool benchmark or participate with an eligible your tool method and publish validated results. | Requires a scientific community, formal challenge metadata, reference data, containerized metrics workflow, assigned role, and OpenEBench support review. | 2026-08-05 — https://openebench.readthedocs.io/en/latest/how_to/4_manage_events.html | Open OpenEBench submit page (new tab)OpenEBench details |
| 1388 | 46 | openHAB Add-on Store | 65 | Link type unknown | openhab.org | Marketplaces and app stores | Free | Moderate | Later | Verified live | Build a real openHAB add-on that integrates an your tool home-network privacy or safety service, provide addon.xml, tests and documentation, then submit it upstream. | A genuine device or service integration is required; DCO, code quality, documentation and maintainer review apply, and marketing-only bindings are unsuitable. | 2026-08-05 | Open openHAB Add-on Store submit page (new tab)openHAB Add-on Store details |
| 1389 | 46 | OpenWrt Packages | 75 | Link type unknown | openwrt.org | Developer registries | Free | Moderate | Later | Verified live | Build an OpenWrt-compatible your tool service or utility for a real router/privacy/security workflow, add correct package metadata and tests, then submit it to the official feed. | Only pursue functionality that genuinely runs on constrained routers or embedded systems; generic website wrappers and unsupported binaries are unsuitable. | 2026-08-05 | Open OpenWrt Packages submit page (new tab)OpenWrt Packages details |
| 1390 | 46 | PeoplePerHour | 75 | Nofollow | peopleperhour.com | Profiles and entities | Free | Moderate | Later | Needs checking | Apply as a freelancer and set up your profile and service offers. | Profiles are reviewed; contact details outside the platform are restricted. | Added 2026-11-01 | Open PeoplePerHour submit page (new tab)PeoplePerHour details |
| 1391 | 46 | personalsit.es | 30 | Link type unknown | personalsit.es | Business directories | Free | Moderate | Later | Needs checking | Add your personal site by opening a pull request on the project's GitHub repo. | Personal sites only; read the repo's contributing notes first. | Added 2026-11-01 | Open personalsit.es submit page (new tab)personalsit.es details |
| 1392 | 46 | Pexels | 90 | Nofollow | pexels.com | Profiles and entities | Free | Moderate | Later | Needs checking | Contribute your own photos or videos and link your site on your profile. | Every upload is reviewed; watermarks and logos are not allowed. | Added 2026-11-01 | Open Pexels submit page (new tab)Pexels details |
| 1393 | 46 | Phaser | 70 | Link type unknown | phaser.io | Publishing platforms | Free | Moderate | Later | Needs checking | If your game is built with Phaser, submit it for their games and news coverage so it can appear on the site and in their newsletter. | Only for games and tools made with Phaser; editorial choice what gets featured. | Added 2026-11-01 | Open Phaser submit page (new tab)Phaser details |
| 1394 | 46 | PitchRate | 35 | Link type unknown | pitchrate.com | PR and source platforms | Free | Moderate | Later | Needs checking | Create expert profile and answer media queries. | Older platform; verify active queries. | 2026-07-30 | Open PitchRate submit page (new tab)PitchRate details |
| 1395 | 46 | Pixabay | 90 | Nofollow | pixabay.com | Profiles and entities | Free | Moderate | Later | Needs checking | Upload original images, vectors or videos and add a website link to your profile. | Strict review of uploads; repeated rejections can limit your account. | Added 2026-11-01 | Open Pixabay submit page (new tab)Pixabay details |
| 1396 | 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 |
| 1397 | 46 | Printables | 70 | Nofollow | printables.com | Profiles and entities | Free | Moderate | Later | Needs checking | Share original printable models and link your website in your profile. | Original work only; low-effort reposts are removed. | Added 2026-11-01 | Open Printables submit page (new tab)Printables details |
| 1398 | 46 | ProAndroidDev | 55 | Nofollow | proandroiddev.com | Guest posting sites | Free | Moderate | Later | Needs checking | Ask to become a writer and submit Android or Kotlin articles through Medium. | Articles must be technical and original; links are usually nofollow. | Added 2026-11-01 | Open ProAndroidDev submit page (new tab)ProAndroidDev details |
| 1399 | 46 | Promote Project | 35 | Link type unknown | promoteproject.com | Profiles and entities | Free | Moderate | Later | Verified live | Create a truthful your tool/founder profile or content page and add the website link where allowed. | Use a real brand/founder identity; do not create thin duplicate pages. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/promote-project | Open Promote Project submit page (new tab)Promote Project details |
| 1400 | 46 | PromptBase | 60 | Nofollow | promptbase.com | Marketplaces and app stores | Free | Moderate | Later | Needs checking | Sell well-tested prompts and link your site from your seller profile. | Prompts are reviewed; low-effort prompts are rejected. | Added 2026-11-01 | Open PromptBase submit page (new tab)PromptBase 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.