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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 601 | 66 | TrueNAS Apps Market | 60 | Link type unknown | apps.truenas.com | Communities and forums | Free | Moderate | Medium | Verified live | Create a secure Docker Compose-based your tool self-hosted deployment, test it against TrueNAS app tooling and submit it to the official community catalog with useful documentation/resources. | Requires a real containerized app, local validation, maintained versions and clear storage/network/security settings; community apps are independently supported and contributions go through repository review. | 2026-08-05 | Open TrueNAS Apps Market submit page (new tab)TrueNAS Apps Market details |
| 602 | 66 | Visual Studio Marketplace | 95 | Nofollow | visualstudio.com | Marketplaces and app stores | Free | Moderate | Medium | Live, conditional | Build and test a useful your tool Visual Studio or Azure DevOps extension, then publish it with truthful homepage, repository and overview metadata. | Requires a real functional extension, publisher account, valid package and policy compliance; placeholder or link-only submissions are unsuitable. | 2026-08-05 official Microsoft Learn Visual Studio Marketplace publishing guide | Open Visual Studio Marketplace submit page (new tab)Visual Studio Marketplace details |
| 603 | 66 | Windows Package Manager | 95 | Nofollow | learn.microsoft.com | Developer registries | Free | Moderate | Medium | Verified live | Submit a validated manifest for an installable Windows release with PackageUrl, PublisherUrl and support metadata. | Official distribution is manifest and CLI-first, so web backlink visibility is limited; automated and manual safety review applies. | Official Microsoft WinGet docs checked 2026-07-30 | Open Windows Package Manager submit page (new tab)Windows Package Manager details |
| 604 | 66 | XWiki Extensions | 60 | Link type unknown | extensions.xwiki.org | Marketplaces and app stores | Free | Moderate | Medium | Verified live | Build an XWiki extension for a useful privacy, accessibility or link-audit workflow, release it as a valid XAR/JAR and publish or import it into the official extension repository. | Must install through Extension Manager and carry correct Maven/extension metadata, version compatibility, licence and documentation. | 2026-08-05 | Open XWiki Extensions submit page (new tab)XWiki Extensions details |
| 605 | 65 | About.me | 90 | Dofollow | about.me | Profiles and entities | Free + paid tier | Quick | Medium | Not submitted | Create clean founder/product profile linking your tool. | Easy brand entity citation. | 2026-07-30 | Open About.me submit page (new tab)About.me details |
| 606 | 65 | Academia.edu | 90 | Nofollow | academia.edu | Profiles and entities | Free + paid tier | Quick | Medium | Live, conditional | Publish genuine authored your tool research and add matching project or supporting-material URLs in the paper metadata. | Use authentic authored literature or research; external links must support the paper, not act as unrelated promotion. | 2026-08-04 | Open Academia.edu submit page (new tab)Academia.edu details |
| 607 | 65 | Bento | 70 | Nofollow | bento.me | Profiles and entities | Free + paid tier | Quick | Medium | Not submitted | Create visual link hub for your tool categories. | Good branded profile; low friction. | 2026-07-30 | Open Bento submit page (new tab)Bento details |
| 608 | 65 | Diigo | 85 | Nofollow | diigo.com | Publishing platforms | Free + paid tier | Quick | Medium | Verified live | Create a useful public learning list with annotations about privacy, accessibility, and scam prevention, placing relevant your tool resources beside independent references. | Each item can be private or public; use the public setting only for a genuinely curated collection. Do not bulk-bookmark AltFTool pages, manipulate titles, or create duplicate profiles. Add disclosure and context. Public bookmarks are UGC and search/index/follow outcomes are not guaranteed. | 2026-08-03 | Open Diigo submit page (new tab)Diigo details |
| 609 | 65 | Dun & Bradstreet | 90 | Nofollow | dnb.com | Startup directories | Free + paid tier | Quick | Medium | Verified live | Claim or update your tool’s legal business record, website, address, phone, industry, and ownership details. | Free manager eligibility is limited to qualifying US-based non-public companies; use the regional D&B process elsewhere. | https://www.dnb.com/en-us/smb/duns/duns-manager.html | Open Dun & Bradstreet submit page (new tab)Dun & Bradstreet details |
| 610 | 65 | ExportersIndia | 60 | Nofollow | exportersindia.com | Business directories | Free + paid tier | Quick | Medium | Verified live | Create an accurate your tool company profile and list only real software or digital services with the canonical website. | Use truthful business identity, contact details and service claims; not suitable for fake product listings. | 2026-08-05 | Open ExportersIndia submit page (new tab)ExportersIndia details |
| 611 | 65 | Foursquare Business Listings | 90 | Nofollow | foursquare.com | Business directories | Free + paid tier | Quick | Medium | Verified live | Claim or create your tool’s genuine business location and maintain its website, contact information, hours, and categories. | Best for a real physical or service location; do not manufacture a venue solely for a backlink. | https://foursquare.com/products/business-listings/ | Open Foursquare Business Listings submit page (new tab)Foursquare Business Listings details |
| 612 | 65 | Freelancer.com | 90 | Nofollow | freelancer.com | Design galleries | Free + paid tier | Quick | Medium | Live, conditional | Use an authentic maker profile to publish an your tool portfolio piece containing original images, article, code, video, or audio samples. | Use only when the person genuinely offers services; publish owned work and avoid profile keyword stuffing. | Official Freelancer.com portfolio and profile guidance checked 2026-08-07 | Open Freelancer.com submit page (new tab)Freelancer.com details |
| 613 | 65 | GPT-3 Demo | 55 | Sometimes dofollow | gpt3demo.com | AI tool directories | Free + paid tier | Quick | Medium | Needs checking | Submit your AI-powered app with screenshots and a link to a working demo. | Listings are curated; the product must actually use AI models. | Added 2026-11-01 | Open GPT-3 Demo submit page (new tab)GPT-3 Demo details |
| 614 | 65 | Gust | 80 | Nofollow | gust.com | Startup directories | Free + paid tier | Quick | Medium | Verified live | Create an your tool company profile with product, team, traction, and website information. | Best fit for a scalable/fundable startup; control which profile information is public. | https://gust.com/accelerate-your-progress/ | Open Gust submit page (new tab)Gust details |
| 615 | 65 | Issuu | 90 | Sometimes dofollow | issuu.com | Publishing platforms | Free + paid tier | Quick | Medium | Needs checking | Upload a guide, report or catalog as a public publication and add your website to the profile and description. | You must own the rights to what you upload; links inside documents may be limited on free plans. | Added 2026-11-01 | Open Issuu submit page (new tab)Issuu details |
| 616 | 65 | Jimdo | 90 | Sometimes dofollow | jimdo.com | Profiles and entities | Free + paid tier | Quick | Medium | 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. Listing link is currently reported nofollow. | 2026-07-30 • https://www.submission.directory/site/jimdo | Open Jimdo submit page (new tab)Jimdo details |
| 617 | 65 | Linktree | 90 | Nofollow | linktr.ee | Profiles and entities | Free + paid tier | Quick | Medium | Not submitted | Create your tool link hub for top pages. | Referral/entity profile; links may be nofollow. | 2026-07-30 | Open Linktree submit page (new tab)Linktree details |
| 618 | 65 | OpenProcessing | 60 | Link type unknown | openprocessing.org | Design galleries | Free + paid tier | Quick | Medium | Needs checking | Post p5.js or Processing sketches publicly and fill in your profile with a link to your site or the full experiment. | Sketches should be your own work; some features need a paid plan. | Added 2026-11-01 | Open OpenProcessing submit page (new tab)OpenProcessing details |
| 619 | 65 | Packagecloud | 55 | Link type unknown | packagecloud.io | Software directories | Free + paid tier | Quick | Medium | Live, conditional | Create a public your tool repository and distribute real signed DEB, RPM, npm, Maven, Helm or other supported packages with accurate metadata. | Repository must serve genuine packages; check current account limits before uploading and never create an empty profile solely for a link. | 2026-08-05 official packagecloud documentation and API | Open Packagecloud submit page (new tab)Packagecloud details |
| 620 | 65 | 95 | Nofollow | pinterest.com | Business directories | Free + paid tier | Quick | Medium | Not submitted | Create boards for PDF/image/calculator tools linking pages. | Good for visual/tool use cases; design pins needed. | 2026-07-30 | Open Pinterest submit page (new tab)Pinterest details | |
| 621 | 65 | REVIEWS.io | 75 | Sometimes dofollow | reviews.io | Review platforms | Free + paid tier | Quick | Medium | Needs checking | Claim your company page and invite real customers to leave reviews. | Incentivised or fake reviews are against policy. | Added 2026-11-01 | Open REVIEWS.io submit page (new tab)REVIEWS.io details |
| 622 | 65 | SoftwareSuggest | 70 | Sometimes dofollow | softwaresuggest.com | Software directories | Free + paid tier | Quick | Medium | Not submitted | List software in relevant category. | India-friendly B2B software directory. | 2026-07-30 | Open SoftwareSuggest submit page (new tab)SoftwareSuggest details |
| 623 | 65 | SourceForge Software | 95 | Nofollow | sourceforge.net | Software directories | Free + paid tier | Quick | Medium | Not submitted | Create software listing/vendor profile. | Good for software/tools discovery. | 2026-07-30 | Open SourceForge Software submit page (new tab)SourceForge Software details |
| 624 | 65 | SourceHut | 50 | Link type unknown | sourcehut.org | Developer registries | Free + paid tier | Quick | Medium | Live, conditional | Host a useful open-source your tool SDK, CLI or example project with documentation and a canonical homepage link. | A real maintained open-source artifact is required; no empty promotional repository. | 2026-08-05 | Open SourceHut submit page (new tab)SourceHut details |
| 625 | 65 | Startup.jobs | 60 | Sometimes dofollow | startup.jobs | Startup directories | Free + paid tier | Quick | Medium | Needs checking | Add your startup and post a real opening so your company page with website link goes live. | Listings must be genuine roles at a startup; stale posts expire. | Added 2026-11-01 | Open Startup.jobs submit page (new tab)Startup.jobs details |
| 626 | 65 | StartupBlink | 60 | Link type unknown | startupblink.com | Startup directories | Free + paid tier | Quick | Medium | Needs checking | Create/claim startup profile for global startup map. | Needs company/startup positioning, not single microtool. | 2026-07-30 | Open StartupBlink submit page (new tab)StartupBlink details |
| 627 | 65 | Strikingly | 85 | Link type unknown | strikingly.com | Profiles and entities | Free + paid tier | Quick | Medium | 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. Link treatment varies by tier/page. | 2026-07-30 • https://www.submission.directory/site/strikingly | Open Strikingly submit page (new tab)Strikingly details |
| 628 | 65 | Sulekha | 75 | Link type unknown | sulekha.com | Business directories | Free + paid tier | Quick | Medium | Verified live | Register your tool only under an accurate eligible service category and complete its website, location, description, and contact details. | Designed for local service providers; lead charges and category eligibility apply, so avoid an irrelevant software-only listing. | https://www.sulekha.com/local-services/business-owners/business/faq | Open Sulekha submit page (new tab)Sulekha details |
| 629 | 65 | Supertools by The Rundown | 55 | Sometimes dofollow | supertools.therundown.ai | AI tool directories | Free + paid tier | Quick | Medium | Needs checking | Submit your AI tool to the directory run alongside a large AI newsletter. | Curated; newsletter mentions are paid sponsorships. | Added 2026-11-01 | Open Supertools by The Rundown submit page (new tab)Supertools by The Rundown details |
| 630 | 65 | Vimeo | 95 | Nofollow | vimeo.com | Profiles and entities | Free + paid tier | Quick | Medium | 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. Listing link is currently reported nofollow. | 2026-07-30 • https://www.submission.directory/site/vimeo | Open Vimeo submit page (new tab)Vimeo details |
| 631 | 65 | Weebly | 90 | Sometimes dofollow | weebly.com | Profiles and entities | Free + paid tier | Quick | Medium | 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. Link treatment varies by tier/page. | 2026-07-30 • https://www.submission.directory/site/weebly | Open Weebly submit page (new tab)Weebly details |
| 632 | 65 | Wix | 95 | Sometimes dofollow | wix.com | Profiles and entities | Free + paid tier | Quick | Medium | 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. Listing link is currently reported nofollow. | 2026-07-30 • https://www.submission.directory/site/wix | Open Wix submit page (new tab)Wix details |
| 633 | 65 | X / Twitter | 95 | Nofollow | x.com | Launch platforms | Free + paid tier | Quick | Medium | Not submitted | Create profile, build-in-public threads, link homepage. | Engagement/referral more than SEO; avoid automation spam. | 2026-07-30 | Open X / Twitter submit page (new tab)X / Twitter details |
| 634 | 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 |
| 635 | 64 | DigitalOcean Marketplace | 90 | Nofollow | digitalocean.com | Marketplaces and app stores | Not stated | Quick | Medium | Verified live | Join the vendor program and package your tool as a legitimate one-click app or supported SaaS add-on with documentation and website links. | Must be deployable, production-ready and maintained; image, Kubernetes or SaaS requirements depend on listing type. | Official DigitalOcean docs verified 2026-07-13 and checked 2026-07-30 | Open DigitalOcean Marketplace submit page (new tab)DigitalOcean Marketplace details |
| 636 | 64 | HackerOne Bug Bounty Platform | 85 | Nofollow | hackerone.com | Communities and forums | Not stated | Quick | Medium | Not submitted | After security readiness, launch a properly scoped public VDP or bounty program with safe-harbor language, assets, response SLAs and funded rewards where applicable. | This is a security program, not an SEO tactic; requires mature triage and remediation, and public profile links may be nofollow or otherwise platform-controlled. | 2026-08-03 | Open HackerOne Bug Bounty Platform submit page (new tab)HackerOne Bug Bounty Platform details |
| 637 | 64 | PrestaShop Marketplace | 80 | Link type unknown | precisemarketplace.prestashop.com | Marketplaces and app stores | Not stated | Quick | Medium | Verified live | Build a production-ready PrestaShop module or theme and submit its technical package, product page and support links. | Technical validation, security, compatibility, licensing, support and marketplace quality rules apply. | Official PrestaShop marketplace guidelines checked 2026-07-30 | Open PrestaShop Marketplace submit page (new tab)PrestaShop Marketplace details |
| 638 | 64 | ServiceNow Store | 90 | Link type unknown | servicenow.com | Marketplaces and app stores | Not stated | Quick | Medium | Verified live | Create a scoped ServiceNow application that performs a real your tool workflow for selected records or attachments and submit it through the Store. | Must join the partner program, use a private application scope, build actual business logic, pass certification, and provide complete documentation. | Official ServiceNow Store publishing documentation checked 2026-08-07 | Open ServiceNow Store submit page (new tab)ServiceNow Store details |
| 639 | 64 | YesWeHack Public Programs | 60 | Link type unknown | yeswehack.com | Other opportunities | Not stated | Quick | Medium | Verified live | Launch a defensive your tool vulnerability disclosure or public bug-bounty program with managed researcher access. | Requires security maturity, authorized scope, safe-harbor rules, triage ownership, and sufficient remediation capacity. | Official YesWeHack bug-bounty program page checked 2026-08-07 | Open YesWeHack Public Programs submit page (new tab)YesWeHack Public Programs details |
| 640 | 63 | Alternative.me | 55 | Link type unknown | alternative.me | Software directories | Free + paid tier | Moderate | Medium | Needs checking | Submit/claim software alternative listing if available. | Different from AlternativeTo; verify flow. | 2026-07-30 | Open Alternative.me submit page (new tab)Alternative.me details |
| 641 | 63 | Autodesk App Store | 90 | Nofollow | autodesk.com | Marketplaces and app stores | Free + paid tier | Moderate | Medium | Verified live | Package an your tool privacy, file-safety, or accessibility assistant for a supported Autodesk product. | The product must be stable, useful, documented, current-version compatible, privacy-safe, and pass Autodesk review. | Official Autodesk App Store publisher guidelines checked 2026-08-07 | Open Autodesk App Store submit page (new tab)Autodesk App Store details |
| 642 | 63 | Baeldung | 70 | Sometimes dofollow | baeldung.com | Guest posting sites | Free | Involved | Medium | Needs checking | Apply to write for the site, then pick topics from their list and write focused Java, Spring or Kotlin tutorials. | Articles follow a strict style guide and code review; external links are kept to documentation and references. | Added 2026-11-01 | Open Baeldung submit page (new tab)Baeldung details |
| 643 | 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 |
| 644 | 63 | Beacons | 75 | Nofollow | beacons.ai | Profiles and entities | Free + paid tier | Moderate | Medium | Verified live | Create one authentic your tool brand page; link the homepage and a few key tool collections with clear labels. | Use one useful brand page only; link-hub/referral value, no ranking guarantee. | 2026-08-04 | Open Beacons submit page (new tab)Beacons details |
| 645 | 63 | BetaPage | 50 | Sometimes dofollow | betapage.co | Startup directories | Free + paid tier | Moderate | Medium | Not submitted | Submit product for startup discovery listing. | Check approval and category fit. | 2026-07-30 | Open BetaPage submit page (new tab)BetaPage details |
| 646 | 63 | Better Business Bureau | 90 | Nofollow | bbb.org | Business directories | Free + paid tier | Moderate | Medium | Needs checking | Request a free business profile for your registered company; accreditation is a separate paid option. | You need a real business address and verifiable contact details; reviews and complaints are public. | Added 2026-11-01 | Open Better Business Bureau submit page (new tab)Better Business Bureau details |
| 647 | 63 | Business.com | 80 | Sometimes dofollow | business.com | Guest posting sites | Free | Involved | Medium | Needs checking | Apply to the contributor program from the site and pitch practical advice for small and midsize business owners. | Editors vet expertise and remove promotional links; contributors cannot sell or trade link placements. | Added 2026-11-01 | Open Business.com submit page (new tab)Business.com details |
| 648 | 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 |
| 649 | 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 |
| 650 | 63 | Carbonmade | 70 | Sometimes dofollow | carbonmade.com | Design galleries | Free + paid tier | Moderate | Medium | Not submitted | Build a substantive product-design case study covering your tool system, flows, and outcomes, then add the canonical site through supported navigation or project links. | Payment is required to go live; publish unique portfolio content rather than a duplicate or thin SEO page. | 2026-08-03 | Open Carbonmade submit page (new tab)Carbonmade details |
| 651 | 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 |
| 652 | 63 | CIO | 90 | Sometimes dofollow | cio.com | Guest posting sites | Free | Involved | Medium | Needs checking | Apply to the publication's expert contributor network if you are a senior IT practitioner and propose a regular column topic. | Acceptance is selective and vendor employees face strict rules; promotional content is not published. | Added 2026-11-01 | Open CIO submit page (new tab)CIO details |
| 653 | 63 | Clippings.me | 60 | Nofollow | clippings.me | Startup directories | Free | Involved | Medium | Not submitted | Create a founder or editor portfolio and add a small selection of substantial your tool guides and externally published articles. | Intended for journalists, bloggers, and writers; use only for a real author portfolio, with the free tier limited to a small set of clips. | 2026-08-03 | Open Clippings.me submit page (new tab)Clippings.me details |
| 654 | 63 | CNCF TAG Security Blog | 80 | Sometimes dofollow | cncf.io | Publishing platforms | Free | Involved | Medium | Verified live | Propose a vendor-neutral, reproducible cloud-native security tutorial or case study, then write it in Markdown and submit the draft by pull request after community discussion. | Topic must serve the cloud-native security community, be accurate, inclusive, non-duplicative, and normally 500–1,200 words. A TAG Security co-chair, tech lead, or project lead must sponsor it before approval; no product pitch. | 2026-08-03 | Open CNCF TAG Security Blog submit page (new tab)CNCF TAG Security Blog details |
| 655 | 63 | Codementor | 80 | Nofollow | codementor.io | Publishing platforms | Free + paid tier | Moderate | Medium | Verified live | If the maker qualifies as a mentor, build a credible technical profile and publish a useful privacy or browser-safety tutorial. | Mentor approval and real expertise are required; use tutorials to teach rather than manufacture a backlink. | Official Codementor profile and tutorial guidance checked 2026-08-07 | Open Codementor submit page (new tab)Codementor details |
| 656 | 63 | Comparably | 80 | Nofollow | comparably.com | Startup directories | Free + paid tier | Moderate | Medium | Verified live | Claim your tool’s company page and complete its verified website, company description, leadership, and employer information. | Claimant generally needs a valid company email and an HR, marketing, employer-brand, or authorized role. | https://www.comparably.com/faq/ | Open Comparably submit page (new tab)Comparably details |
| 657 | 63 | Concrete CMS Marketplace | 60 | Link type unknown | marketplace.concretecms.com | Marketplaces and app stores | Free + paid tier | Moderate | Medium | Verified live | Build a robust Concrete CMS package for an your tool privacy, accessibility or site-audit workflow, package it correctly and submit the add-on through the official marketplace manager. | Must be a genuine installable package compatible with supported Concrete versions and ready for marketplace review; current commercial terms and review requirements should be reconfirmed before launch. | 2026-08-05 | Open Concrete CMS Marketplace submit page (new tab)Concrete CMS Marketplace details |
| 658 | 63 | Content Marketing Institute | 80 | Sometimes dofollow | contentmarketinginstitute.com | Guest posting sites | Free | Involved | Medium | Needs checking | Find the blog contribution guidelines on the site and pitch an actionable content strategy article backed by your experience. | Posts must be original and non-promotional; editors decide whether any outbound links stay. | Added 2026-11-01 | Open Content Marketing Institute submit page (new tab)Content Marketing Institute details |
| 659 | 63 | Crevado | 60 | Sometimes dofollow | crevado.com | Other opportunities | Free + paid tier | Moderate | Medium | Not submitted | Create a complete your tool product case study and add the canonical URL naturally within project text or a linked image. | Keep the portfolio public and substantive; custom-domain and other advanced features may require Premium. | 2026-08-03 | Open Crevado submit page (new tab)Crevado details |
| 660 | 63 | Crozdesk | 60 | Link type unknown | crozdesk.com | Software directories | Free + paid tier | Moderate | Medium | Not submitted | Create vendor account and submit software. | B2B SaaS categories; reviews matter. | 2026-07-30 | Open Crozdesk submit page (new tab)Crozdesk details |
| 661 | 63 | DSCI Threat Intelligence & Research | 50 | Link type unknown | dsci.in | Other opportunities | Free | Involved | Medium | Verified live | Pitch an original evidence-backed privacy, scam, or cyber advisory based on genuine your tool research. | Requires real technical expertise, non-promotional research and editorial approval; a contribution is not DSCI endorsement. | 2026-08-05 official DSCI TIR page | Open DSCI Threat Intelligence & Research submit page (new tab)DSCI Threat Intelligence & Research details |
| 662 | 63 | Experiments with Google | 80 | Link type unknown | experiments.withgoogle.com | Design galleries | Free | Involved | Medium | Needs checking | Submit a finished, open web experiment that uses Google technologies (Chrome, WebGL, AI, AR) for their showcase; featured projects link to the live site and the creator. | Highly selective; projects normally need to be built on Google platforms or APIs and be publicly playable. | Added 2026-11-01 | Open Experiments with Google submit page (new tab)Experiments with Google details |
| 663 | 63 | Failory | 55 | Sometimes dofollow | failory.com | Startup directories | Free | Involved | Medium | Needs checking | Pitch a founder interview about how you built and grew your product, with honest numbers and lessons. | They favour detailed, candid stories; generic promo pitches are ignored. | Added 2026-11-01 | Open Failory submit page (new tab)Failory details |
| 664 | 63 | Figshare | 90 | Nofollow | figshare.com | Software directories | Free + paid tier | Moderate | Medium | Verified live | Publish a genuine your tool benchmark, dataset, software artifact, poster, or methods report with the canonical project URL in metadata. | Academic/research output only; public items receive persistent DOIs and should not be deleted or used as promotional shells. | https://info.figshare.com/user-guide/what-is-figshare/ | Open Figshare submit page (new tab)Figshare details |
| 665 | 63 | Findstack | 50 | Link type unknown | findstack.com | Marketplaces and app stores | Free + paid tier | Moderate | Medium | Verified live | Claim a basic vendor profile and invite verified existing customers to leave honest reviews. | The free tier does not include the vendor website link; profiles are reviewed and reviews must not be fabricated or manipulated. | 2026-08-03 • https://findstack.com/get-listed | Open Findstack submit page (new tab)Findstack details |
| 666 | 63 | FlipHTML5 | 75 | Sometimes dofollow | fliphtml5.com | Publishing platforms | Free + paid tier | Moderate | Medium | Verified live | Publish an original your tool privacy or accessibility guide and add contextual clickable links within the document. | Original substantial documents only; free plan limits apply and duplicate thin PDFs should be avoided. | 2026-08-04 | Open FlipHTML5 submit page (new tab)FlipHTML5 details |
| 667 | 63 | Futurepedia | 60 | Nofollow | futurepedia.io | AI tool directories | Free + paid tier | Moderate | Medium | Not submitted | Submit only AI-facing your tool features, not whole toolbox if too broad. | AI-only; paid options may dominate. | 2026-07-30 | Open Futurepedia submit page (new tab)Futurepedia details |
| 668 | 63 | Glassdoor Employer Center | 90 | Nofollow | glassdoor.com | Startup directories | Free + paid tier | Moderate | Medium | Verified live | Claim your tool employer profile and verify website, headquarters, logo, company mission, and benefits. | Glassdoor approves authorized HR, marketing, operations, or executive users; reviews remain independent. | https://www.glassdoor.com/employers/resources/glassdoor-employer-center-guide/ | Open Glassdoor Employer Center submit page (new tab)Glassdoor Employer Center details |
| 669 | 63 | GoodFirms | 75 | Sometimes dofollow | goodfirms.co | Software directories | Free + paid tier | Moderate | Medium | Not submitted | Create company/software listing. | Works better with company details and reviews. | 2026-07-30 | Open GoodFirms submit page (new tab)GoodFirms details |
| 670 | 63 | Hackster.io | 80 | Nofollow | hackster.io | Communities and forums | Free | Involved | Medium | Verified live | Publish a detailed hardware or IoT project that genuinely uses your tool, with code, parts, instructions and an external tutorial link where useful. | Hardware-specific; sales pitches and non-project blog posts are prohibited, and discoverable projects must be complete. | Official Hackster project docs checked 2026-07-30 | Open Hackster.io submit page (new tab)Hackster.io details |
| 671 | 63 | HARO (Help a Reporter Out) | 85 | Sometimes dofollow | helpareporter.com | PR and source platforms | Free | Involved | Medium | Needs checking | Sign up as a source and answer reporter queries in your area with short, quotable expert responses. | Answer only queries you are qualified for, and expect most pitches to go unused; links depend on the outlet. | Added 2026-11-01 | Open HARO (Help a Reporter Out) submit page (new tab)HARO (Help a Reporter Out) details |
| 672 | 63 | Hashnode | 85 | Sometimes dofollow | hashnode.com | Publishing platforms | Free | Involved | Medium | Not submitted | Post technical/product story with canonical link. | Use original article; don't duplicate everywhere. | 2026-07-30 | Open Hashnode submit page (new tab)Hashnode details |
| 673 | 63 | Heyzine | 55 | Link type unknown | heyzine.com | Publishing platforms | Free + paid tier | Moderate | Medium | Live, conditional | Convert an original your tool guide into a public flipbook and add contextual links or web embeds for cited tools and resources. | Public visibility must be enabled; avoid duplicate or sales-only PDFs and respect source copyrights. | 2026-08-05 | Open Heyzine submit page (new tab)Heyzine details |
| 674 | 63 | Indeed Company Pages | 90 | Nofollow | indeed.com | Startup directories | Free + paid tier | Moderate | Medium | Verified live | Claim your tool’s page and add the verified website, social profiles, logo, location, industry, and accurate employer story. | An employer account and verification may be required; reviews cannot be edited by the company and features vary by market. | https://www.indeed.com/hire/resources/howtohub/faq?co=US | Open Indeed Company Pages submit page (new tab)Indeed Company Pages details |
| 675 | 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 |
| 676 | 63 | Jenkins Plugin Site | 85 | Nofollow | jenkins.io | Marketplaces and app stores | Free + paid tier | Moderate | Medium | Live, conditional | Build a secure Jenkins plugin that performs a real your tool CI, privacy, or accessibility workflow; host it through Jenkins project infrastructure and publish maintained releases and documentation. | Follow Jenkins security guidance, style, testing, hosting, repository-permission, artifact, documentation, release, compatibility, and governance requirements. All current update-center plugins appear on the public plugin site; do not create a link-only or unmaintained plugin. | 2026-08-03 | Open Jenkins Plugin Site submit page (new tab)Jenkins Plugin Site details |
| 677 | 63 | JetBrains Marketplace | 90 | Nofollow | jetbrains.com | Marketplaces and app stores | Free + paid tier | Moderate | Medium | Live, conditional | Package your tool developer/security utilities as a compatible JetBrains plugin and upload it. | Requires vendor agreement/profile, compatible signed plugin, metadata, and manual approval. | https://plugins.jetbrains.com/docs/marketplace/uploading-a-new-plugin.html | Open JetBrains Marketplace submit page (new tab)JetBrains Marketplace details |
| 678 | 63 | Journo Portfolio | 50 | Sometimes dofollow | journoportfolio.com | Other opportunities | Free + paid tier | Moderate | Medium | Not submitted | Create a founder portfolio with original your tool launch notes or product case studies and use an external-link page for the canonical website. | The free plan is limited to a home page and ten items; publish meaningful original work, not a backlink-only shell. | 2026-08-03 | Open Journo Portfolio submit page (new tab)Journo Portfolio details |
| 679 | 63 | js13kGames | 50 | Link type unknown | js13kgames.com | Communities and forums | Free | Involved | Medium | Needs checking | Enter the yearly competition with a web game that fits in 13 kB zipped; each entry gets a page linking to your source and profile. | Runs once a year from mid-August to mid-September; strict size limit and no external libraries or services. | Added 2026-11-01 | Open js13kGames submit page (new tab)js13kGames details |
| 680 | 63 | KDnuggets | 75 | Sometimes dofollow | kdnuggets.com | Guest posting sites | Free | Involved | Medium | Needs checking | Follow the submission page instructions and send an original data science, machine learning or AI tutorial. | Posts must be technical and original; reposts and marketing pieces are declined. | Added 2026-11-01 | Open KDnuggets submit page (new tab)KDnuggets details |
| 681 | 63 | Land-book | 60 | Sometimes dofollow | land-book.com | Design galleries | Free + paid tier | Moderate | Medium | Needs checking | Submit landing page for inspiration gallery. | Good if landing design is strong. | 2026-07-30 | Open Land-book submit page (new tab)Land-book details |
| 682 | 63 | Landingfolio | 55 | Link type unknown | landingfolio.com | Design galleries | Free + paid tier | Moderate | Medium | Needs checking | Submit your tool homepage/category landing page. | Works if page design is strong. | 2026-07-30 | Open Landingfolio submit page (new tab)Landingfolio details |
| 683 | 63 | Lapa Ninja | 55 | Sometimes dofollow | lapa.ninja | Design galleries | Free + paid tier | Moderate | Medium | Needs checking | Submit your tool landing/category page. | Landing-page focused. | 2026-07-30 | Open Lapa Ninja submit page (new tab)Lapa Ninja details |
| 684 | 63 | MarketingProfs | 80 | Sometimes dofollow | marketingprofs.com | Guest posting sites | Free | Involved | Medium | Needs checking | Look for the article submission guidelines and send a finished draft on a practical B2B or digital marketing topic. | Content must be original to MarketingProfs and educational; your link goes in a short author bio. | Added 2026-11-01 | Open MarketingProfs submit page (new tab)MarketingProfs details |
| 685 | 63 | MarTech | 85 | Sometimes dofollow | martech.org | Guest posting sites | Free | Involved | Medium | Needs checking | Apply through the contributor program (shared with Search Engine Land) and pitch an article on marketing operations, data or tooling. | Pieces must be vendor-neutral and educational; your link usually lives in the author bio, not the article. | Added 2026-11-01 | Open MarTech submit page (new tab)MarTech details |
| 686 | 63 | Meetup | 90 | Nofollow | meetup.com | Communities and forums | Free + paid tier | Moderate | Medium | Live, conditional | Run a genuine privacy, online-tools or accessibility community and reference your tool only where it supports the group or event. | Requires an active group and real events; Starter limits attendance and frequency, and organizer plans auto-renew. | 2026-08-05 | Open Meetup submit page (new tab)Meetup details |
| 687 | 63 | MerchantCircle | 70 | Nofollow | merchantcircle.com | Business directories | Free + paid tier | Moderate | Medium | Needs checking | Claim or add the real business page, enter the official website, and publish only accurate service and location details. | Designed for local businesses and requests address, phone, and ZIP; use only with a legitimate supported business location and verify the selected plan before checkout. | 2026-08-03 | Open MerchantCircle submit page (new tab)MerchantCircle details |
| 688 | 63 | Milkshake | 50 | Link type unknown | milkshake.app | Other opportunities | Free + paid tier | Moderate | Medium | Verified live | Build a free mobile your tool mini-site with brand story, key collections, demos and contact links. | App-based setup; publish substantive cards instead of a bare backlink page. | 2026-08-04 | Open Milkshake submit page (new tab)Milkshake details |
| 689 | 63 | Mintlify | 65 | Sometimes dofollow | mintlify.com | Publishing platforms | Free + paid tier | Moderate | Medium | Needs checking | Publish your product or developer docs from a Git repo on the free tier and link to your site from the docs. | Free hobby sites have limits; documentation should be for a real project. | Added 2026-11-01 | Open Mintlify submit page (new tab)Mintlify details |
| 690 | 63 | Nordic APIs | 55 | Sometimes dofollow | nordicapis.com | Guest posting sites | Free | Involved | Medium | Needs checking | Pitch an article on API design, security or strategy; the team also works with paid freelance writers. | Content must be vendor-neutral and educational; promotional pieces are not published. | Added 2026-11-01 | Open Nordic APIs submit page (new tab)Nordic APIs details |
| 691 | 63 | OnToplist | 50 | Dofollow | ontoplist.com | Business directories | Free + paid tier | Moderate | Medium | 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. Free path requires a reciprocal badge; skip if you do not want one. Dofollow is reported but recheck after approval. | 2026-07-30 • https://www.submission.directory/site/ontoplist | Open OnToplist submit page (new tab)OnToplist details |
| 692 | 63 | PaperCall | 55 | Link type unknown | papercall.io | Other opportunities | Free | Involved | Medium | Live, conditional | Submit useful your tool-related talks to relevant CFPs or run a genuine community CFP with a public event page. | Follow each event's submission rules; no generic pitches, fake events or irrelevant promotional talks. | 2026-08-05 | Open PaperCall submit page (new tab)PaperCall details |
| 693 | 63 | PhysioNet | 75 | Link type unknown | physionet.org | Software directories | Free | Involved | Medium | Verified live | Publish a clinical-data de-identification or quality tool with source, installation steps, dependencies, documentation, and tests. | Must support credible biomedical research, use an accepted open-source license, and pass editorial review. | Official PhysioNet publishing guide checked 2026-08-05 | Open PhysioNet submit page (new tab)PhysioNet details |
| 694 | 63 | Podcast Movement | 60 | Link type unknown | podcastmovement.com | Other opportunities | Free | Involved | Medium | Verified live | Submit an educational, non-sales session on privacy-safe tooling or accessible creator workflows when the next CFP opens. | The June 2026 CFP is closed; monitor future calls and never turn a talk into a product pitch. | 2026-08-05 | Open Podcast Movement submit page (new tab)Podcast Movement details |
| 695 | 63 | Poki for Developers | 70 | Link type unknown | poki.com | Marketplaces and app stores | Free | Involved | Medium | Needs checking | Share a playable build of your web game with the Poki developer team; selected games are published with a developer credit. | Poki is selective and curates what it publishes; expect feedback rounds and an exclusive-style partnership for accepted games. | Added 2026-11-01 | Open Poki for Developers submit page (new tab)Poki for Developers details |
| 696 | 63 | Polar | 60 | Link type unknown | polar.sh | Profiles and entities | Free + paid tier | Moderate | Medium | Live, conditional | Create an your tool organization, set its official website, and publish a real free or paid digital product or subscription. | Use only when AltFTool has a legitimate digital product; business details, compliance and payout verification may be required. | 2026-08-05 | Open Polar submit page (new tab)Polar details |
| 697 | 63 | pretalx | 55 | Link type unknown | pretalx.com | Other opportunities | Free + paid tier | Moderate | Medium | Live, conditional | Use pretalx for a genuine your tool community conference or submit relevant talks to events that use the platform. | Public pages require a real conference and accepted content; trial-only pages are not a backlink strategy. | 2026-08-05 | Open pretalx submit page (new tab)pretalx details |
| 698 | 63 | ReactJS Example | 50 | Dofollow | reactjsexample.com | Other opportunities | Free | Involved | Medium | Live, conditional | Submit a reusable open-source React component extracted from your tool with repository, demo, setup docs and screenshots. | Do not submit the commercial landing page or a thin wrapper; project must be genuinely reusable and open source. | 2026-08-04 | Open ReactJS Example submit page (new tab)ReactJS Example details |
| 699 | 63 | ReadMe | 80 | Sometimes dofollow | readme.com | Publishing platforms | Free + paid tier | Moderate | Medium | Needs checking | Host your API or product documentation on ReadMe and link back to your main site and app. | Free plans have feature limits; docs must be for a real product. | Added 2026-11-01 | Open ReadMe submit page (new tab)ReadMe details |
| 700 | 63 | Research Data Alliance Adoption Stories | 65 | Link type unknown | rd-alliance.org | Other opportunities | Free | Involved | Medium | Verified live | Document a real your tool implementation of a named RDA recommendation with challenge, measurable outcome, lessons, and supporting resources. | Requires genuine adoption evidence; generic product profiles and promotional case studies are not eligible, and acceptance is editorial. | 2026-08-05 — https://www.rd-alliance.org/submit-an-adoption-story/ | Open Research Data Alliance Adoption Stories submit page (new tab)Research Data Alliance Adoption Stories details |
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.