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AltF Backlinks

Free backlink sites list: 1,964 places to get a link

A maintained list of 1,964 legitimate backlink sites: directories, profile creation sites, guest posting sites, launch platforms, registries and marketplaces. 1,628 are free or have a free tier, 44 usually give a dofollow link, and 781 have an estimated DA of 70 or more. Every row shows authority, link type, cost and effort, and links straight to the submit page.

1,964
Opportunities
1,628
Free or freemium
781
Est. DA 70+
208
Quick wins

1–100 of 539 opportunities

The table is wider than the screen — swipe it sideways for cost, effort and the preparation notes.

Submission opportunities with impact score, cost, effort, priority, status and preparation notes. Scroll horizontally for all columns.
#Impact (sorted)Site — sort by thisEst. DA — sort by thisLinkDomainTypeCostEffort — sort by thisPriorityStatusWhat to prepareRules / caveatCheckedActions
1100ACT Rules Community45Dofollowact-rules.github.ioCommunities and forumsFreeQuickDo firstVerified liveImplement applicable ACT Rules, execute official test cases, publish the implementation report, join ACT-R CG, and propose your tool as an implementation.Requires genuine rule implementation and reproducible results; inaccurate or partial claims will not qualify.Official implementation instructions checked 2026-08-05Open ACT Rules Community submit page (new tab)ACT Rules Community details
2100AlternativeTo80Nofollowalternativeto.netStartup directoriesFreeQuickDo firstNot submittedCreate account, wait cooldown if new, submit your tool as platform alternative.Avoid per-tool submissions for calculators/converters; no URLs in description.2026-07-30Open AlternativeTo submit page (new tab)AlternativeTo details
3100CB Insights90Nofollowcbinsights.comProfiles and entitiesFreeQuickDo firstNot submittedRequest an Analyst Briefing and complete the company survey with product, customer, growth, funding, and market evidence.Submission does not guarantee profile or research inclusion; all metrics and claims must be supportable and current.2026-08-03Open CB Insights submit page (new tab)CB Insights details
4100Content Authenticity Initiative60Link type unknowncontentauthenticity.orgPublishing platformsFreeQuickDo firstVerified liveApply as a company and accurately describe your tool C2PA or content-provenance tools and intended participation.Open membership, but genuine participation is expected; directory may publish the organization name/logo and link.2026-08-04Open Content Authenticity Initiative submit page (new tab)Content Authenticity Initiative details
5100CSA STAR Registry80Sometimes dofollowcloudsecurityalliance.orgDeveloper registriesFreeQuickDo firstLive, conditionalComplete the current CAIQ or AI-CAIQ truthfully and submit your tool real cloud service to the STAR Registry.Cloud/SaaS fit only; disclose actual controls and update annually. Never overstate security practices.2026-08-04Open CSA STAR Registry submit page (new tab)CSA STAR Registry details
6100CycloneDX Tool Center55Link type unknowncyclonedx.orgSoftware directoriesFreeQuickDo firstVerified liveAdd standards-valid CycloneDX support, then submit the structured your tool entry through the official contribution workflow.Must accurately state supported CycloneDX versions, functions and licensing; a listing is not product certification.2026-08-05 official CycloneDX Tool CenterOpen CycloneDX Tool Center submit page (new tab)CycloneDX Tool Center details
7100FreeNoSignup—Link type unknownfreenosignup.comSoftware directoriesFreeQuickDo firstVerified liveSubmit one or more free your tool utilities that work without registration.Tool must be active, useful, web-based, privacy-respecting and usable without signup.2026-08-05Open FreeNoSignup submit page (new tab)FreeNoSignup details
8100Glama MCP Directory50Link type unknownglama.aiOther opportunitiesFreeQuickDo firstNot submittedDeploy a maintained your tool MCP server from GitHub, Docker, npm, or PyPI, verify maintainer ownership, and switch it public only after production testing.Hosted servers are private by default; public listing requires a real working server, and ranking or backlink attributes remain platform-controlled.2026-08-03Open Glama MCP Directory submit page (new tab)Glama MCP Directory details
9100MERLOT70Link type unknownmerlot.orgOther opportunitiesFreeQuickDo firstVerified livePublish a genuinely reusable privacy or accessibility lesson on your tool, give it a stable URL and open license, then add its educational metadata to MERLOT.The resource must be an online OER with its own URL; subscription-only material is inappropriate. Supply discipline, audience, material type, description, author, license, cost, and accessibility metadata honestly.2026-08-03Open MERLOT submit page (new tab)MERLOT details
10100OpenSSF Best Practices Badge60Link type unknownbestpractices.devProfiles and entitiesFreeQuickDo firstLive, conditionalOpen-source a well-scoped your tool component, document its governance, tests, security process, and complete the passing-badge self-assessment.Only genuine FLOSS projects qualify; claims are checked and must be backed by public evidence, including a public repository, license, contribution path, HTTPS, tests, and vulnerability-reporting process.2026-08-03Open OpenSSF Best Practices Badge submit page (new tab)OpenSSF Best Practices Badge details
11100Postman90Nofollowpostman.comProfiles and entitiesFreeQuickDo firstLive, conditionalCreate an your tool public workspace with sanitized API collections, examples, documentation, and a canonical homepage link on the publisher profile.Never publish tokens, cookies, secrets, private endpoints, or user data; run the secret scan before making a workspace public.https://learning.postman.com/v11/docs/collaborating-in-postman/using-workspaces/public-workspacesOpen Postman submit page (new tab)Postman details
12100Product Hunt90Nofollowproducthunt.comLaunch platformsFreeQuickDo firstNot submittedLaunch your platform first; prepare maker comment and assets.No upvote asks; personal accounts; schedule proper launch.2026-07-30Open Product Hunt submit page (new tab)Product Hunt details
13100RapidAPI Hub80Link type unknownrapidapi.comMarketplaces and app storesFreeQuickDo firstVerified liveList a stable your tool API with OpenAPI definitions, clear endpoints, health checks and its official website in the permitted listing field.The API must be functional, accurately documented and securely operated; avoid listing browser-only tools as fake APIs.2026-08-03Open RapidAPI Hub submit page (new tab)RapidAPI Hub details
14100SaaSHub70Dofollowsaashub.comStartup directoriesFreeQuickDo firstNot submittedSubmit platform, add competitor alternatives, verify domain email.Add competitors; avoid paid multi-submit page confusion.2026-07-30Open SaaSHub submit page (new tab)SaaSHub details
15100SAYUJ by STPI—Link type unknownsayuj.netStartup directoriesFreeQuickDo firstVerified liveRegister your tool as an Indian startup, complete its offering profile, and use Product Expo or Startup Connect when relevant.Requires email and Indian mobile OTP; STPI ownership does not imply government endorsement of listed startups.2026-08-05 official registration and STPI About SAYUJ pagesOpen SAYUJ by STPI submit page (new tab)SAYUJ by STPI details
16100Smithery MCP Registry50Link type unknownsmithery.aiDeveloper registriesFreeQuickDo firstNot submittedPublish a genuine hosted, external, or stdio MCP server exposing a small set of consent-based your tool utilities with complete metadata and documentation.Server must be operational and compliant; public page and analytics do not guarantee prominence, referral traffic, or dofollow links.2026-08-03Open Smithery MCP Registry submit page (new tab)Smithery MCP Registry details
17100StartupTN35Link type unknownstartuptn.inStartup directoriesFreeQuickDo firstLive, conditionalUse the official Register flow and build a verified your tool company profile if Tamil Nadu startup rules are met.Use the homepage registration flow because deep URLs change; public visibility and acceptance remain conditional.2026-08-04Open StartupTN submit page (new tab)StartupTN details
18100Tracxn75Nofollowtracxn.comStartup directoriesFreeQuickDo firstNot submittedSubmit the company website and concise product, market, founder, funding, and traction details for analyst review.Analysts decide inclusion and may request documents; provide only verifiable company, funding, team, and traction data.2026-08-03Open Tracxn submit page (new tab)Tracxn details
1997Atlassian Marketplace90Nofollowatlassian.comMarketplaces and app storesFree + paid tierQuickDo firstLive, conditionalBuild a Forge-based your tool integration for Jira or Confluence, create a Marketplace Partner profile, and submit a compliant public listing.New submissions must use supported cloud/Forge paths and meet security, privacy, legal, support, and active-maintenance requirements.https://developer.atlassian.com/platform/marketplace/introduction-to-marketplace/Open Atlassian Marketplace submit page (new tab)Atlassian Marketplace details
2097Dark Reading90Nofollowdarkreading.comPublishing platformsFree + paid tierQuickDo firstVerified liveSubmit a sharp founder-authored opinion based on real privacy or security evidence discovered while building your tool.Exclusive 700–800-word commentary, maximum 1,000 words; it must not be AI-written, promotional, or simultaneously submitted elsewhere.https://www.darkreading.com/cyberattacks-data-breaches/how-to-submit-a-column-to-dark-readingOpen Dark Reading submit page (new tab)Dark Reading details
2197Hugging Face Spaces90Nofollowhuggingface.coProfiles and entitiesFree + paid tierQuickDo firstVerified livePublish a real your tool privacy, redaction, or local-AI demo Space and add the canonical your tool URL in its README/metadata.Use a genuine working demo. Public Spaces expose source; protected/private visibility has plan limits.https://huggingface.co/docs/hub/main/spaces-overviewOpen Hugging Face Spaces submit page (new tab)Hugging Face Spaces details
2297RapidAPI80Link type unknownrapidapi.comMarketplaces and app storesFree + paid tierQuickDo firstLive, conditionalPublish a real, documented your tool API, complete its Hub listing with accurate website and terms URLs, and optionally offer a free usage tier.Conditional on a stable production API with correct auth, documentation, monitoring, support, privacy, and functional endpoint tests.https://docs.rapidapi.com/docs/what-is-rapidapiOpen RapidAPI submit page (new tab)RapidAPI details
2386Activepieces Community Pieces50Link type unknownactivepieces.comCommunities and forumsFreeQuickHighNot submittedBuild and test a useful your tool piece with real actions, publish the package under a unique organization scope, and maintain version compatibility.Users install community pieces through My Pieces; package publication alone does not guarantee central-directory promotion or a followed backlink.2026-08-03Open Activepieces Community Pieces submit page (new tab)Activepieces Community Pieces details
2486Alfred Gallery50Link type unknownalfred.appDesign galleriesFreeQuickHighVerified liveBuild a privacy-safe macOS Alfred workflow that opens or runs useful your tool actions, publish it on the forum, gather feedback, and seek Gallery inclusion.Gallery submission is invitation-based after community testing; no auto-updater, downloaded executables, unsigned binaries, or unsafe behavior.Official Alfred Gallery submission requirements checked 2026-08-07Open Alfred Gallery submit page (new tab)Alfred Gallery details
2586AnkiWeb Add-ons65Link type unknownankiweb.netMarketplaces and app storesFreeQuickHighVerified liveBuild a useful Anki privacy, study-safety, or accessibility add-on, package it as .ankiaddon, and upload it through AnkiWeb.Must be a working desktop add-on; avoid collecting card data, document permissions, and maintain compatibility across Anki releases.Official Anki add-on sharing guide checked 2026-08-05Open AnkiWeb Add-ons submit page (new tab)AnkiWeb Add-ons details
2686Ansible Galaxy80Nofollowansible.comDeveloper registriesFreeQuickHighNot submittedCreate a tested Ansible collection for supported your tool deployment or audit automation, complete galaxy.yml, version it, and publish with a Galaxy token.Publish only maintained, useful collection content with accurate metadata and versioning; acceptance does not guarantee discovery, referrals, or followed links.2026-08-03Open Ansible Galaxy submit page (new tab)Ansible Galaxy details
2786Apache Airflow Ecosystem90Nofollowairflow.apache.orgOther opportunitiesFreeQuickHighVerified liveCreate a real your tool Airflow provider with hooks/operators and documentation metadata, publish it, then add it to Airflow’s Ecosystem page by PR.Provider must implement apache_airflow_provider metadata, use unique connection types, be documented and packaged; ecosystem PR is evaluated for community usefulness.2026-08-05 — https://airflow.apache.org/docs/apache-airflow-providers/howto/create-custom-providers.htmlOpen Apache Airflow Ecosystem submit page (new tab)Apache Airflow Ecosystem details
2886APIList.fun45Link type unknownapilist.funOther opportunitiesFreeQuickHighLive, conditionalRecommend an official your tool API with its documentation URL, concise Markdown description, category, and technical details.Submit only an active public API with accurate auth, SSL, request, and response information.2026-08-05Open APIList.fun submit page (new tab)APIList.fun details
2986APIs.guru OpenAPI Directory50Link type unknownapis.guruOther opportunitiesFreeQuickHighLive, conditionalWhen your tool exposes a stable public API, host an official OpenAPI definition at a permanent URL and submit it with accurate ownership, category, logo, and metadata.The API must be public through clearly documented access steps, persistent, independently useful, and described by a valid machine-readable definition. APIs.guru aggregates rather than hosts the specification and automatically rechecks its source, so keep the canonical spec stable and current.2026-08-03Open APIs.guru OpenAPI Directory submit page (new tab)APIs.guru OpenAPI Directory details
3086AppDirectory.org—Link type unknownappdirectory.orgSoftware directoriesFreeQuickHighLive, conditionalSubmit your tool once with its strongest free-use case, correct category, concise copy, and product URL.The app must be free or have a meaningful free tier; listings are curated and duplicate submissions are not allowed.2026-08-03Open AppDirectory.org submit page (new tab)AppDirectory.org details
3186Awesome-Selfhosted40Link type unknownawesome-selfhosted.netSoftware directoriesFreeQuickHighLive, conditionalSubmit a mature self-hosted your tool edition using the required YAML entry and canonical website/source links.Must be a working FOSS network app with a release at least four months old; LLM-generated contributions are prohibited.2026-08-05Open Awesome-Selfhosted submit page (new tab)Awesome-Selfhosted details
3286Buildkite Plugins Directory70Link type unknownbuildkite.comMarketplaces and app storesFreeQuickHighVerified liveBuild a pipeline plugin that runs your tool checks on selected artifacts and posts configurable pass, warn, or fail annotations.Use a public repository with the required suffix, valid plugin.yml, hooks, tests, and README; add the official topic for directory sync.Official Buildkite plugin writing documentation checked 2026-08-07Open Buildkite Plugins Directory submit page (new tab)Buildkite Plugins Directory details
3386Capterra90Nofollowcapterra.comSoftware directoriesFreeQuickHighNot submittedList product under software categories.Part of Gartner Digital Markets; good B2B fit.2026-07-30Open Capterra submit page (new tab)Capterra details
3486CodeNewbie Community60Nofollowcodenewbie.orgPublishing platformsFreeQuickHighNot submittedCreate a transparent human profile and publish a beginner-friendly build log or tutorial showing how one your tool privacy utility works and what tradeoffs it has.Follow the community code of conduct, accessibility guidance, Markdown/editor rules, and honest authorship. Use canonical URLs where republishing and avoid promotional flooding.2026-08-03Open CodeNewbie Community submit page (new tab)CodeNewbie Community details
3586CodePen90Nofollowcodepen.ioProfiles and entitiesFreeQuickHighVerified liveBuild an original interactive demo of an your tool utility, document the use case in Pen Details, and add your tool as one of the public profile links.Public Pens are searchable and MIT-licensed; publish original useful code, not a blank redirect or copied landing page.https://blog.codepen.io/docs/getting-around/your-profile/Open CodePen submit page (new tab)CodePen details
3686CodeSandbox90Nofollowcodesandbox.ioProfiles and entitiesFreeQuickHighNot submittedPublish a small open demo that explains one your tool algorithm or UI pattern and add the product website to the founder profile links.The sandbox must run and provide reusable technical value; public projects and profile links are UGC and may be nofollowed.2026-08-03Open CodeSandbox submit page (new tab)CodeSandbox details
3786CoFoundersLab65Nofollowcofounderslab.comStartup directoriesFreeQuickHighVerified liveCreate a complete founder and startup profile for your tool and participate in relevant founder discussions or connection requests.Use a real founder identity, contribute context before mentioning AltFTool, and never send unsolicited promotional messages.Official CoFoundersLab signup and community path checked 2026-08-07Open CoFoundersLab submit page (new tab)CoFoundersLab details
3886Cybil Knowledge Portal40Link type unknowncybilportal.orgSoftware directoriesFreeQuickHighVerified liveSubmit a genuine international cyber-capacity-building project, tool, publication or webinar with evidence and a live resource URL.Portal staff curate and may validate with participants; must have direct cyber-capacity-building relevance, not be a generic product listing.2026-08-05 — https://cybilportal.org/submit-your-cyber-capacity-building-projects/Open Cybil Knowledge Portal submit page (new tab)Cybil Knowledge Portal details
3986daily.dev75Nofollowdaily.devProfiles and entitiesFreeQuickHighNot submittedComplete the founder's developer profile, add your tool as real project experience, and publish useful privacy or security engineering posts with contextual links.Participate as a genuine community member; avoid promotional link dumps, and do not assume any particular search-link attribute.2026-08-03Open daily.dev submit page (new tab)daily.dev details
4086DatoCMS Plugin Marketplace65Link type unknowndatocms.comMarketplaces and app storesFreeQuickHighVerified liveBuild an your tool privacy or security field plugin, publish the npm package, and use your tool as its homepage and support site.The package name must start datocms-plugin-, include the required keyword, and meet Plugin SDK requirements; ingestion is automatic.Official DatoCMS Marketplace publishing documentation checked 2026-08-07Open DatoCMS Plugin Marketplace submit page (new tab)DatoCMS Plugin Marketplace details
4186Directus Marketplace65Link type unknowndirectus.comMarketplaces and app storesFreeQuickHighVerified livePublish a genuine your tool Directus extension to npm and complete author, documentation, support, and website metadata.Requires the Directus extension keyword and metadata; availability depends on supported extension type and matching npm and GitHub author identity.Official Directus Marketplace publishing documentation checked 2026-08-07Open Directus Marketplace submit page (new tab)Directus Marketplace details
4286DokuWiki Plugins70Nofollowdokuwiki.orgMarketplaces and app storesFreeQuickHighVerified liveBuild a DokuWiki privacy, redaction, accessibility, or secure-export plugin, publish its code and create the canonical plugin page used by the extension directory.Must be an installable maintained plugin with accurate compatibility, download, source, license, and security information.Official DokuWiki extension pages and plugin wizard checked 2026-08-05Open DokuWiki Plugins submit page (new tab)DokuWiki Plugins details
4386Eclipse Marketplace90Nofolloweclipse.orgMarketplaces and app storesFreeQuickHighVerified livePublish a functional Eclipse plugin for an your tool developer use case, then create a complete marketplace listing with official support and source links.Requires an Eclipse account, a working installable plugin and compliance with marketplace content and trademark rules.2026-08-03Open Eclipse Marketplace submit page (new tab)Eclipse Marketplace details
4486FOSSRadar—Link type unknownfossradar.devOther opportunitiesFreeQuickHighVerified liveAfter open-sourcing a maintained component, submit the TOML project file and website through GitHub PR.Must be India-founded, India-maintained or serve Indian users; repository and license are required.2026-08-03Open FOSSRadar submit page (new tab)FOSSRadar details
4586Fourthwall70Nofollowfourthwall.comOther opportunitiesFreeQuickHighVerified liveOffer a substantial free privacy checklist, accessibility workbook, or safety template from a branded storefront and link your tool only as supporting documentation.Publish useful rights-cleared products rather than thin promotional downloads; payment rates vary and the free plan has listing limits.Official Fourthwall digital-products, pricing, and terms pages checked 2026-08-07Open Fourthwall submit page (new tab)Fourthwall details
4686Framer Marketplace85Nofollowframer.comMarketplaces and app storesFreeQuickHighVerified liveCreate a functional Framer plugin for accessibility, metadata, responsive-content, or privacy checks and publish it with your tool documentation.Test in fresh projects, package the real plugin, provide accurate screenshots and descriptions, and maintain every published version.Official Framer plugin publishing documentation checked 2026-08-07Open Framer Marketplace submit page (new tab)Framer Marketplace details
4786Frappe Cloud Marketplace65Link type unknownfrappe.ioMarketplaces and app storesFreeQuickHighVerified liveBuild a useful your tool-related Frappe app, publish it through Frappe Cloud Marketplace, and include the official project/site link in its genuine listing.App must be open source under an MIT/GPL-compatible licence, stable on Frappe, pass CI, provide support/privacy URLs and accurate imagery/demo; do not use the listing as a link-only redirect.2026-08-05Open Frappe Cloud Marketplace submit page (new tab)Frappe Cloud Marketplace details
4886Frontend Mentor65Nofollowfrontendmentor.ioDesign galleriesFreeQuickHighVerified liveComplete a relevant accessibility or privacy-themed challenge, submit its real live URL and public repository, and add your tool only as maker context or a case-study link.The submission must solve an actual challenge; a live URL and public repository are required, so never upload secrets or private code.Official Frontend Mentor submission and plan guidance checked 2026-08-07Open Frontend Mentor submit page (new tab)Frontend Mentor details
4986GeM70Link type unknowngem.gov.inMarketplaces and app storesFreeQuickHighLive, conditionalRegister an authorized Indian business seller and list only real eligible your tool services with accurate catalogue details.Requires authorized entity, Aadhaar/PAN, business PAN, incorporation and bank data; an external backlink is not guaranteed.2026-08-04Open GeM submit page (new tab)GeM details
5086gitconnected50Nofollowgitconnected.comProfiles and entitiesFreeQuickHighNot submittedCreate the founder developer profile, add your tool as a real project, and link the live product and supporting repository where applicable.Use a real individual profile with accurate work history; this is not a generic company-directory listing.2026-08-03Open gitconnected submit page (new tab)gitconnected details
5186GitHub95Nofollowgithub.comDeveloper registriesFreeQuickHighNot submittedCreate org/repo README linking your tool; submit to relevant awesome lists.Only publish original/clean licensed code; no fake stars.2026-07-30Open GitHub submit page (new tab)GitHub details
5286Glasp55Nofollowglasp.coProfiles and entitiesFreeQuickHighVerified liveCreate a founder research profile that curates authoritative privacy, accessibility, security, and standards material, including your tool only when it directly supports the annotation.Free-user highlights are public by default; never add confidential data or secrets, and maintain balanced curation instead of a self-link collection.Official Glasp pricing and highlighting guidance checked 2026-08-07Open Glasp submit page (new tab)Glasp details
5386Global Accessibility Awareness Day30Link type unknownaccessibility.dayOther opportunitiesFreeQuickHighVerified liveHost a genuine public accessibility learning or testing event and submit its dates, description and your tool event URL.The event must be real and accessibility-focused; use a public event page, not a disguised product listing.2026-08-05 — https://accessibility.day/submit-your-eventOpen Global Accessibility Awareness Day submit page (new tab)Global Accessibility Awareness Day details
5486Goodpods60Nofollowgoodpods.comOther opportunitiesFreeQuickHighLive, conditionalSearch for and claim a real your tool podcast, then keep its RSS-supplied website and episode metadata accurate.Claim only a show AltFTool owns; authentic podcast content and RSS ownership are required.2026-08-04Open Goodpods submit page (new tab)Goodpods details
5586Hexo Plugin List75Link type unknownhexo.ioMarketplaces and app storesFreeQuickHighVerified liveCreate a functional Hexo plugin for a relevant your tool capability, publish the package, then add its record to Hexo's official plugin data repository.Plugin must be genuinely useful, maintained and correctly packaged; submit the required YAML metadata through the documented contribution path, not a promotional-only entry.2026-08-05Open Hexo Plugin List submit page (new tab)Hexo Plugin List details
5686HSTS Preload List70Link type unknownhstspreload.orgOther opportunitiesFreeQuickHighNot submittedAudit every your tool subdomain, stage HSTS safely, then submit the base domain only after long-term HTTPS readiness is proven.Requires a valid certificate, HTTP-to-HTTPS redirect, HTTPS on every subdomain, and HSTS max-age of at least one year with includeSubDomains and preload. Inclusion is difficult and slow to undo, so do not submit before a staged rollout.2026-08-03Open HSTS Preload List submit page (new tab)HSTS Preload List details
5786Indie Hackers75Nofollowindiehackers.comStartup directoriesFreeQuickHighNot submittedAdd product and post build-in-public story with honest numbers.Avoid link-drop; founder story performs better.2026-07-30Open Indie Hackers submit page (new tab)Indie Hackers details
5886Indie Page35Link type unknownindiepa.geStartup directoriesFreeQuickHighNot submittedBuild a complete founder profile, add your tool as a shipped startup, and keep milestones, revenue visibility, and product details truthful.Public publishing is paid; use a real founder identity and accurate startup data rather than a backlink-only profile.2026-08-03Open Indie Page submit page (new tab)Indie Page details
5986Joplin Plugins60Link type unknownjoplinapp.orgMarketplaces and app storesFreeQuickHighNot submittedBuild and test a Joplin plugin that locally detects or removes sensitive note content, provide a valid manifest and publish a maintained release for discovery.Requires a real installable package, correct plugin manifest and ongoing compatibility; directory metadata and outbound-link handling are platform-controlled.2026-08-03Open Joplin Plugins submit page (new tab)Joplin Plugins details
6086Keybase75Nofollowkeybase.ioStartup directoriesFreeQuickHighNot submittedCreate the founder Keybase profile and cryptographically prove control of your tool so the public identity record links the verified domain.The founder must control the website or DNS proof and keep account keys secure; this verifies identity rather than acting as a marketing listing.2026-08-03Open Keybase submit page (new tab)Keybase details
6186Kompass75Sometimes dofollowkompass.comBusiness directoriesFreeQuickHighNot submittedRegister the legal company and complete a global B2B profile with accurate IT services, contact data, and your tool website.Provide verifiable company details and choose the correct Kompass classifications; enhanced promotion is paid.2026-08-03Open Kompass submit page (new tab)Kompass details
6286Listen Notes80Dofollowlistennotes.comOther opportunitiesFreeQuickHighLive, conditionalSubmit a real your tool podcast RSS feed whose show website and episode notes naturally reference relevant tools.Valid human-made podcast with substantive episodes only; low-quality or link-only feeds are rejected.2026-08-04Open Listen Notes submit page (new tab)Listen Notes details
6386MeltanoHub50Link type unknownhub.meltano.comMarketplaces and app storesFreeQuickHighVerified liveBuild a Singer SDK tap that incrementally extracts your tool audit runs and findings, then add it through MeltanoHub's official issue-assisted or self-service contribution path.Must be an installable, maintained Singer tap with real schemas and incremental state behavior; do not submit a metadata-only package.2026-08-05Open MeltanoHub submit page (new tab)MeltanoHub details
6486Needle Directory—Link type unknownuseneedle.netStartup directoriesFreeQuickHighVerified liveSign in and submit an accurate your tool product profile for review.Verified startups and tools only; community upvotes must remain organic.2026-08-05Open Needle Directory submit page (new tab)Needle Directory details
6586Nimble Directory35Link type unknownnimble.directoryDeveloper registriesFreeQuickHighVerified liveRelease a maintained Nim client or utility for your tool and publish it through Nimble with accurate repository and homepage metadata.The package must meet Nimble manifest and source-hosting requirements and remain installable.2026-08-03Open Nimble Directory submit page (new tab)Nimble Directory details
6686Node-RED Flow Library65Link type unknownnodered.orgDeveloper registriesFreeQuickHighVerified liveCreate a functional your tool Node-RED node, publish it to npm, and add it to the Flow Library with documentation and support metadata.Must follow Node-RED naming, package metadata, node UX, testing, and documentation conventions and avoid thin wrappers.Official Node-RED custom node documentation checked 2026-08-07Open Node-RED Flow Library submit page (new tab)Node-RED Flow Library details
6786NuGet85Nofollownuget.orgDeveloper registriesFreeQuickHighVerified livePublish a real .NET library or CLI package with ProjectUrl, readme, repository and license metadata.Requires a Microsoft account and API key; packages undergo validation and indexing.Official Microsoft NuGet docs checked 2026-07-30Open NuGet submit page (new tab)NuGet details
6886NVDA Add-on Store60Link type unknownaddonstore.nvaccess.orgMarketplaces and app storesFreeQuickHighVerified liveBuild an installable privacy or accessibility NVDA add-on and submit it through the official add-on datastore workflow.Not a generic website listing; public source, documentation, compatible licensing, testing, and ongoing NVDA compatibility are required.Official live store and datastore submission guide checked 2026-08-05Open NVDA Add-on Store submit page (new tab)NVDA Add-on Store details
6986Obsidian Community Plugins75Link type unknownobsidian.mdMarketplaces and app storesFreeQuickHighVerified liveBuild a unique and useful Obsidian plugin, create valid releases and submit it to the community plugin directory.Requires a working plugin, release artifacts, documentation and compliance with Obsidian developer policies.Official Obsidian submission docs checked 2026-07-30Open Obsidian Community Plugins submit page (new tab)Obsidian Community Plugins details
7086Open Hub75Nofollowopenhub.netProfiles and entitiesFreeQuickHighVerified liveAdd or claim a genuine open-source your tool project and complete its description, code locations, tags and official homepage.FOSS projects only; connect real public source history and avoid duplicate or abandoned shell projects.Official live Open Hub project directory checked 2026-07-30Open Open Hub submit page (new tab)Open Hub details
7186Open Makers—Link type unknownopenmakers.ioProfiles and entitiesFreeQuickHighNot submittedJoin as your tool founder, create a product page, and document meaningful launches, milestones, and lessons learned.Sign up as an individual maker, not as a product; product-only and spam accounts may be deleted, and X sign-in is required.2026-08-03Open Open Makers submit page (new tab)Open Makers details
7286Open VSX Registry65Link type unknownopen-vsx.orgMarketplaces and app storesFreeQuickHighLive, conditionalPublish a useful your tool editor extension whose marketplace metadata links to its homepage and documentation.Requires a genuine VSIX extension, namespace ownership and an access token; do not republish third-party work without rights.https://open-vsx.org/Open Open VSX Registry submit page (new tab)Open VSX Registry details
7386OpenChain50Link type unknownopenchainproject.orgOther opportunitiesFreeQuickHighVerified liveImplement a scoped open-source compliance or security-assurance program, self-certify honestly, then request your tool Community of Conformance listing.Every applicable answer must truthfully be yes and scope must be explicit; self-certification is not independent certification or endorsement.2026-08-05 official conformance submission, FAQ and Community of Conformance pagesOpen OpenChain submit page (new tab)OpenChain details
7486OpenSourceAlternative.to35Link type unknownopensourcealternative.toSoftware directoriesFreeQuickHighLive, conditionalSubmit a genuinely open-source, maintained and self-hostable your tool component as an alternative to a named proprietary tool.Requires real open source, self-hosting and active maintenance; submission does not guarantee inclusion.2026-08-04Open OpenSourceAlternative.to submit page (new tab)OpenSourceAlternative.to details
7586OpenTelemetry Registry75Link type unknownopentelemetry.ioMarketplaces and app storesFreeQuickHighVerified liveAdd native OpenTelemetry support or build a useful your tool instrumentation or utility, then submit its registry metadata and documentation links.Must fit an allowed registry type, have real implementation and enablement docs, use accurate licence and marketing metadata, and stay maintained.2026-08-05 — https://opentelemetry.io/ecosystem/registry/adding/Open OpenTelemetry Registry submit page (new tab)OpenTelemetry Registry details
7686Package Control60Link type unknownpackagecontrol.ioMarketplaces and app storesFreeQuickHighVerified liveBuild a useful Sublime Text integration for an your tool developer workflow, document it publicly and submit the package for review.Requires a public repository, valid metadata, releases and successful automated tests; thin promotional plugins will not qualify.2026-08-03Open Package Control submit page (new tab)Package Control details
7786Peerlist55Link type unknownpeerlist.ioLaunch platformsFreeQuickHighNot submittedCreate maker profile and launch your tool as project.Best fit for developer/design tools; complete profile first.2026-07-30Open Peerlist submit page (new tab)Peerlist details
7886Pipedream Registry70Link type unknownpipedream.comMarketplaces and app storesFreeQuickHighLive, conditionalBuild your tool triggers/actions, submit them to the public registry by GitHub PR, and address review feedback.Components must follow registry patterns; approved PRs become available in Pipedream Marketplace and workflows.https://pipedream.com/docs/components/contributingOpen Pipedream Registry submit page (new tab)Pipedream Registry details
7986Pipedrive Marketplace85Link type unknownpipedrive.comMarketplaces and app storesFreeQuickHighVerified liveBuild a Pipedrive OAuth integration for safe note export, duplicate cleanup, or PII auditing and submit a unique your tool listing.OAuth and testing are mandatory; accept the partner agreement and provide working legal, support, and production URLs.Official Pipedrive app development and marketplace guidance checked 2026-08-07Open Pipedrive Marketplace submit page (new tab)Pipedrive Marketplace details
8086PlatformIO Registry60Link type unknownregistry.platformio.orgDeveloper registriesFreeQuickHighVerified livePackage a real embedded privacy or security library for supported boards, add complete PlatformIO manifest and examples, test it, and publish it publicly.Published name-version pairs are immutable; package must be functional, properly licensed, documented, versioned, and maintained.Official PlatformIO package-publish documentation checked 2026-08-05Open PlatformIO Registry submit page (new tab)PlatformIO Registry details
8186Player FM80Nofollowplayer.fmOther opportunitiesFreeQuickHighLive, conditionalSubmit a genuine your tool podcast RSS feed or Apple Podcasts URL with accurate show-website and episode metadata.Feed must be public, accessible and contain playable audio enclosures; do not submit a fake link-only feed.2026-08-04Open Player FM submit page (new tab)Player FM details
8286Pocket Casts70Link type unknownpocketcasts.comOther opportunitiesFreeQuickHighLive, conditionalSubmit a real public your tool podcast RSS feed whose metadata and episode notes reference the official site naturally.Requires a valid public RSS feed and genuine episodes; do not submit a shell or private feed as public.2026-08-05Open Pocket Casts submit page (new tab)Pocket Casts details
8386PowerShell Gallery75Nofollowpowershellgallery.comDeveloper registriesFreeQuickHighVerified livePublish a stable your tool module or script with ProjectURI, LicenseURI, tags, help and examples.Requires an account and API key; pass PowerShell Gallery validation and avoid placeholder packages.Official Microsoft publishing docs checked 2026-07-30Open PowerShell Gallery submit page (new tab)PowerShell Gallery details
8486PRISM Break60Dofollowprism-break.orgSoftware directoriesFreeQuickHighLive, conditionalPropose a qualifying open-source your tool privacy project through the official contribution process.Strong privacy and free-software fit is required; follow maintainers' criteria and avoid promotional-only changes.2026-08-05Open PRISM Break submit page (new tab)PRISM Break details
8586pub.dev85Link type unknownpub.devDeveloper registriesFreeQuickHighVerified livePublish an your tool Dart package with homepage, repository, issue tracker, documentation and a complete readme.Must satisfy pub.dev policy and quality checks; a verified publisher is preferable for a branded package.Official Dart publishing docs checked 2026-07-30Open pub.dev submit page (new tab)pub.dev details
8686Pulsar Package Registry45Link type unknownpulsar-edit.devDeveloper registriesFreeQuickHighVerified liveBuild a maintained Pulsar editor package that performs a real your tool workflow, then publish it to the official package registry with a useful README and project link.Package must be hosted on GitHub and include valid package.json metadata, SemVer and Pulsar engine constraints; it must provide real editor functionality, not a backlink wrapper.2026-08-05Open Pulsar Package Registry submit page (new tab)Pulsar Package Registry details
8786PulseMCP45Link type unknownpulsemcp.comOther opportunitiesFreeQuickHighLive, conditionalSubmit your tool MCP repository or public server URL, preferably after publishing it to the official MCP Registry.Registry data is processed periodically; only submit a real repository, server or client.2026-08-04Open PulseMCP submit page (new tab)PulseMCP details
8886PWA Directory35Link type unknownpwa.directoryOther opportunitiesFreeQuickHighLive, conditionalFirst pass PWA checks, then submit the installable HTTPS app with manifest, service worker, offline behavior, icons, and screenshots.Requires a valid manifest, registered service worker, useful offline behavior, HTTPS, no broken links, and more than a bare website wrapper.2026-08-03Open PWA Directory submit page (new tab)PWA Directory details
8986RingCentral App Gallery85Link type unknownringcentral.comMarketplaces and app storesFreeQuickHighVerified liveBuild a public RingCentral integration around call-note privacy or safe file sharing and complete the profile with your tool documentation, privacy, and support links.A working public app is mandatory; screenshots must show the integration, and the profile needs installation, support, privacy, and legal details.Official RingCentral App Gallery promotion documentation checked 2026-08-07Open RingCentral App Gallery submit page (new tab)RingCentral App Gallery details
9086Sensu Bonsai50Link type unknownbonsai.sensu.ioOther opportunitiesFreeQuickHighVerified livePublish an open-source Sensu check/handler for your tool, create GitHub releases and bonsai.yml, then register it with description and tags.GitHub-hosted open-source asset; release archives, supported platforms, SHA-512 checksums, useful README and correct Bonsai metadata are required.2026-08-05 — https://docs.sensu.io/sensu-go/latest/plugins/assets/#share-an-asset-on-bonsaiOpen Sensu Bonsai submit page (new tab)Sensu Bonsai details
9186Sessionize70Link type unknownsessionize.comProfiles and entitiesFreeQuickHighLive, conditionalCreate a founder expert profile and submit substantive talks about privacy-first tools, accessibility or web security.Directory visibility should reflect real expertise and sessions; free event mode excludes promotional or commercial events.2026-08-05Open Sessionize submit page (new tab)Sessionize details
9286Speaker Deck85Nofollowspeakerdeck.comPublishing platformsFreeQuickHighVerified liveUpload an original conference-quality PDF deck explaining privacy-safe tooling or accessibility testing, with a useful description, correct category, references, and an honest profile link.Upload a real educational presentation, not a sales brochure. Free decks are public and downloadable; private or password-protected sharing requires Pro, and all content must be owned or licensed.2026-08-03Open Speaker Deck submit page (new tab)Speaker Deck details
9386Stacker News50Link type unknownstacker.newsProfiles and entitiesFreeQuickHighNeeds checkingCreate a genuine founder profile and share a useful build story or tutorial with a relevant link.Follow community self-promotion rules; contribute before linking; no repetitive posts. Listing link is currently reported nofollow.2026-07-30 • https://www.submission.directory/site/stacker-newsOpen Stacker News submit page (new tab)Stacker News details
9486StackStorm Exchange45Link type unknownexchange.stackstorm.orgOther opportunitiesFreeQuickHighVerified liveCreate a useful StackStorm integration or automation pack for an your tool workflow, then submit it through the official Exchange Incubator pull-request process.Pack must contain real actions, workflows, rules or sensors; pack.yaml metadata must pass naming, email, Python and SemVer checks, and contribution grants the documented copyright licence.2026-08-05Open StackStorm Exchange submit page (new tab)StackStorm Exchange details
9586Startup Grind70Link type unknownstartupgrind.comStartup directoriesFreeQuickHighVerified liveJoin a relevant chapter, complete the founder profile, attend suitable events, and share your tool only in genuine networking context.Choose a relevant chapter or event and follow organizer rules; member access is not a broadcast or mass-messaging channel.Official Startup Grind chapter community path checked 2026-08-07Open Startup Grind submit page (new tab)Startup Grind details
9686StartuPage—Link type unknownstartupa.geStartup directoriesFreeQuickHighVerified liveCreate an authentic founder profile, add your tool as a startup page and include verified website/social links.Use truthful traction data; do not fabricate revenue or create duplicate identities.2026-08-03Open StartuPage submit page (new tab)StartuPage details
9786Tableau Public90Nofollowpublic.tableau.comProfiles and entitiesFreeQuickHighVerified livePublish an original dashboard using public your tool benchmark or ecosystem data and add an appropriate project permalink in workbook details.Everything published is publicly accessible and may be downloadable; never include secrets, private analytics, user-level records, or confidential data.https://help.tableau.com/current/pro/desktop/en-gb/publish_workbooks_tableaupublic.htmOpen Tableau Public submit page (new tab)Tableau Public details
9886Terraform Registry80Link type unknownregistry.terraform.ioDeveloper registriesFreeQuickHighLive, conditionalPublish a maintained Terraform provider for your tool stable API, or a genuinely reusable deployment module, with signed releases, generated documentation, examples, tests, and semantic versions.A provider must use a public lowercase terraform-provider-* GitHub repository, signed cross-platform release assets, a valid manifest, docs, and SemVer tags. A module has separate public-repository, naming, structure, documentation, and tag requirements. Publish only a functional reusable artifact.2026-08-03Open Terraform Registry submit page (new tab)Terraform Registry details
9986The Org65Nofollowtheorg.comStartup directoriesFreeQuickHighVerified liveAdd your tool’s real company, founder, and team structure with website and role details to create a trustworthy organization profile.Use verified work details and obtain team consent before publishing names or roles; do not fabricate an org chart.https://theorg.com/iterate/how-to-make-an-org-chartOpen The Org submit page (new tab)The Org details
10086Toolradar—Link type unknowntoolradar.comSoftware directoriesFreeQuickHighVerified liveCreate an your tool product page for discovery, comparison, and reviews.Vendor account and truthful product details required.https://toolradar.com/vendorsOpen Toolradar submit page (new tab)Toolradar details

How to build backlinks with this list

Four steps that work for a new site, a SaaS or a side project. No paid link packages, nothing that risks a penalty.

  1. Get the basics right first

    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.

  2. Claim profiles and free listings

    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.

  3. Go after a few strong links

    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.

  4. Track and keep it clean

    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

A link opportunity is not a link.

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 view

An 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.

Backlink sites by category

Common questions

Do backlinks still matter for ranking in 2026?
Links remain one signal among many, and low-quality bulk links do more harm than good. What still works is being listed where your buyers actually look — directories with real traffic, registries your peers use, and launch platforms with engaged audiences. Every entry in this list is a place a human might plausibly find you, which is why they are worth submitting to regardless of link equity.
Which submissions should I do first?
Start with the quick wins filter: free, low effort, and not in the lowest priority band. 208 of the 1,964 entries qualify, and those are the ones where a single form submission gets you a live listing the same week. Launch platforms are worth saving until your product is genuinely ready, because you only get one good attempt at each.
How is the impact score calculated?
It starts from a hand-assigned priority band (do first, high, medium, later), then adjusts for cost and effort. A free, quick opportunity scores above a paid, involved one in the same band, because it is the one you can realistically finish today. The score is a queueing aid, not a measure of domain authority.
Are these links free?
1,628 of the 1,964 entries are free to submit to or offer a free tier that includes a listing. Cost is shown on every row, and the "nothing to pay" filter narrows the list to exactly those.
Which backlink sites are dofollow?
44 entries are known to give a followed link on a normal listing, and more give one only in some placements. The link type is shown on every row and can be filtered. Sites change their link policy without notice, so treat the label as a starting point and check the live page after you are listed. A nofollow link from a busy site still sends visitors and helps search engines discover you.
What does the DA number mean?
It is our estimate of the site's domain authority, a third-party style 0-100 score of how strong a domain's link profile is, rounded to the nearest 5. 1,580 of the 1,964 sites have one. It is useful for comparing sites, not a Google metric, so relevance to your niche still matters more.
How do I get backlinks for a new website?
1. Get the basics right first: 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. 2. Claim profiles and free listings: 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. 3. Go after a few strong links: 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. 4. Track and keep it clean: 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.
Will submitting everywhere hurt my site?
Submitting to spam directories can. That is why this list is curated rather than scraped, and why entries carry a status showing whether they have been verified as live. Skip anything that promises hundreds of links for a fee, and prefer places where a real person reviews submissions.