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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 258 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
186Alfred 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
286AnkiWeb 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
386Apache 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
486Buildkite 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
586CodePen90Nofollowcodepen.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
686CoFoundersLab65Nofollowcofounderslab.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
786Cybil 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
886DatoCMS 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
986Directus 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
1086DokuWiki 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
1186Eclipse 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
1286FOSSRadar—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
1386Fourthwall70Nofollowfourthwall.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
1486Framer 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
1586Frappe 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
1686Frontend 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
1786Glasp55Nofollowglasp.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
1886Global 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
1986Hexo 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
2086MeltanoHub50Link 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
2186Needle 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
2286Nimble 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
2386Node-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
2486NuGet85Nofollownuget.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
2586NVDA 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
2686Obsidian 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
2786Open 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
2886OpenChain50Link 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
2986OpenTelemetry 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
3086Package 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
3186Pipedrive 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
3286PlatformIO 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
3386PowerShell 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
3486pub.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
3586Pulsar 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
3686RingCentral 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
3786Sensu 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
3886Speaker 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
3986StackStorm 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
4086Startup 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
4186StartuPage—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
4286Tableau 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
4386The 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
4486Toolradar—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
4586Traefik Plugin Catalog60Link type unknownplugins.traefik.ioMarketplaces and app storesFreeQuickHighVerified liveBuild a production-quality Traefik middleware plugin for an your tool privacy or security use case and publish it to the public catalog.Plugin must be public, reusable, tested, documented, safely scoped, and compliant with Traefik plugin manifest and registry requirements.2026-08-05 — https://doc.traefik.io/traefik-hub/api-gateway/guides/plugin-development-guideOpen Traefik Plugin Catalog submit page (new tab)Traefik Plugin Catalog details
4686TYPO3 Extension Repository75Link type unknowntypo3.orgMarketplaces and app storesFreeQuickHighVerified liveBuild a TYPO3 backend extension for selected content or media PII, metadata, and accessibility checks.Register a unique extension key and provide public source, documentation, security policy, semantic versions, and maintained releases.Official TYPO3 Extension Repository publishing documentation checked 2026-08-07Open TYPO3 Extension Repository submit page (new tab)TYPO3 Extension Repository details
4786Umbraco Marketplace75Link type unknownumbraco.comMarketplaces and app storesFreeQuickHighVerified liveCreate an your tool Umbraco integration package and point its NuGet project URL plus documentation to your tool.The NuGet package needs the marketplace tag, supported Umbraco version metadata, documentation, and optional marketplace manifest.Official Umbraco Marketplace package listing documentation checked 2026-08-07Open Umbraco Marketplace submit page (new tab)Umbraco Marketplace details
4886UN SDG Actions Platform90Link type unknownsdgs.un.orgStartup directoriesFreeQuickHighVerified liveRegister a concrete ongoing your tool initiative with measurable milestones, dates, resources, SDG targets, partners and website evidence.Action must be specific, measurable, achievable, resource-based, time-bound and ongoing; not a proposal, completed activity or organization profile.2026-08-05 — https://sdgs.un.org/partnerships/acceleration-actions/registerOpen UN SDG Actions Platform submit page (new tab)UN SDG Actions Platform details
4986Upbound Marketplace45Link type unknownmarketplace.upbound.ioMarketplaces and app storesFreeQuickHighVerified liveBuild and publish a real Crossplane provider, function, configuration or add-on that integrates an your tool capability and exposes accurate project documentation.Use Upbound's package tooling and a public listing; package must be installable, maintained and useful to control-plane users. Confirm public visibility because new pushed packages may initially be private.2026-08-05Open Upbound Marketplace submit page (new tab)Upbound Marketplace details
5086Webex App Hub90Link type unknownwebex.comMarketplaces and app storesFreeQuickHighVerified liveBuild a production Webex integration or bot for deliberate sharing of your tool checklists or sanitized files, then submit its branded App Hub profile.Must be production-ready, use minimum scopes, avoid Cisco trademark misuse, and provide complete support and marketing material.Official Webex App Hub submission documentation checked 2026-08-07Open Webex App Hub submit page (new tab)Webex App Hub details
5186Wikimedia Toolhub95Link type unknowntoolhub.wikimedia.orgSoftware directoriesFreeQuickHighVerified liveBuild a tool that genuinely interacts with Wikimedia, publish accurate toolinfo.json metadata, and register it through Toolhub UI, crawler, or API.Must serve Wikimedia projects; Wikimedia login is required and submitted metadata is CC0; unrelated utilities do not qualify.Official Wikimedia developer search and Toolhub documentation checked 2026-08-05Open Wikimedia Toolhub submit page (new tab)Wikimedia Toolhub details
5286WorkflowHub45Link type unknownworkflowhub.euDeveloper registriesFreeQuickHighVerified livePackage a reproducible your tool privacy or redaction workflow, join or create a team, and register it with rich metadata and source links.Requires a real executable workflow file, team membership, accurate authorship/licence metadata, and a maintained public entry.2026-08-05 — https://about.workflowhub.eu/docs/registering_workflows/registering-a-workflow/Open WorkflowHub submit page (new tab)WorkflowHub details
5384App Stack Builder—Link type unknownappstackbuilder.comLaunch platformsFreeModerateHighVerified liveSubmit your tool as a developer or productivity tool for editorial launch coverage.Must be live, useful, and relevant to SaaS or developer workflows.https://appstackbuilder.com/submit-toolOpen App Stack Builder submit page (new tab)App Stack Builder details
5484Arch User Repository80Nofollowaur.archlinux.orgDeveloper registriesFreeModerateHighVerified liveCreate and maintain a PKGBUILD for an installable your tool Linux release with the upstream URL and correct source checksums.No duplicates, placeholders or binary uploads; package must be useful, x86_64-compatible and maintained.Official ArchWiki submission guide checked 2026-07-30Open Arch User Repository submit page (new tab)Arch User Repository details
5584Asana App Directory90Nofollowasana.comMarketplaces and app storesFreeModerateHighVerified liveBuild an OAuth Asana component that launches an your tool audit or attaches a generated report, then submit complete company and support details.The app must be shared to any workspace, use OAuth where required, include complete listing details, and pass Asana review.Official Asana app sharing documentation checked 2026-08-07Open Asana App Directory submit page (new tab)Asana App Directory details
5684Bing for Business95Nofollowbing.comBusiness directoriesFreeModerateHighVerified liveClaim and verify your tool’s legitimate business entity or location and keep name, address, phone, and website consistent.Business verification and eligibility rules apply; do not create a fake address for an online-only SaaS.https://support.microsoft.com/en-us/bing/add-and-manage-your-business-listingOpen Bing for Business submit page (new tab)Bing for Business details
5784Bioconductor75Link type unknownbioconductor.orgReview platformsFreeModerateHighVerified liveIf your tool ships a legitimate genomics or bioinformatics utility, package it for R with complete vignettes and submit it for review.Only in-scope, scientifically useful and maintainable packages qualify; peer review and continuous checks apply.2026-08-03Open Bioconductor submit page (new tab)Bioconductor details
5884Bitrise Step Library70Link type unknownbitrise.ioOther opportunitiesFreeModerateHighVerified liveBuild a Bitrise Step that runs your tool secret, privacy, or accessibility checks on explicitly chosen build artifacts.Provide step.yml, implementation, README, declared inputs and outputs, dependencies, and tests; pass Step Library review.Official Bitrise custom Step development documentation checked 2026-08-07Open Bitrise Step Library submit page (new tab)Bitrise Step Library details
5984Blender Extensions85Nofollowblender.orgMarketplaces and app storesFreeModerateHighVerified liveBuild a practical Blender add-on for media privacy, metadata or workflow automation and upload its tested extension package with documentation.Requires a Blender ID, valid manifest, tested ZIP and moderation approval; extension licensing and online-access declarations must be accurate.2026-08-03Open Blender Extensions submit page (new tab)Blender Extensions details
6084Business Tool Vault—Link type unknownbusinesstoolvault.comSoftware directoriesFreeModerateHighVerified liveSubmit your tool with a clear business use case, logo and optional demo video.Team reviews effectiveness, relevance and completeness before inclusion.2026-08-05Open Business Tool Vault submit page (new tab)Business Tool Vault details
6184Caddy Module Registry65Link type unknowncaddyserver.comDeveloper registriesFreeModerateHighVerified liveBuild a useful your tool privacy or security Caddy module, publish the Go package, then register it for module docs and custom builds.Requires a working Go module that implements the Caddy interface; register through a Caddy account and maintain accurate public package documentation.2026-08-05 — https://caddyserver.com/docs/extending-caddyOpen Caddy Module Registry submit page (new tab)Caddy Module Registry details
6284Canva Apps Marketplace95Nofollowcanva.comMarketplaces and app storesFreeModerateHighVerified liveBuild a Canva app that sends chosen design assets to an your tool accessibility, metadata, or privacy check and returns useful results inside Canva.The app must be unique, production-hosted, identity-verified, compliant with Canva rules, and pass functionality and quality review.Official Canva app review documentation checked 2026-08-07Open Canva Apps Marketplace submit page (new tab)Canva Apps Marketplace details
6384Checkmk Exchange55Link type unknownexchange.checkmk.comMarketplaces and app storesFreeModerateHighVerified livePackage a useful your tool service/security monitor as an MKP, create an account, and upload its description, icon and first version.MKP must be free to use, lawfully distributable, semantic-versioned, functional and safe; Checkmk developers moderate and test before publication.2026-08-05 — https://exchange.checkmk.com/how-to-uploadOpen Checkmk Exchange submit page (new tab)Checkmk Exchange details
6484Chocolatey Community Repository75Nofollowcommunity.chocolatey.orgDeveloper registriesFreeModerateHighVerified livePackage a genuine your tool Windows desktop or CLI release and set project, documentation and package-source URLs.Automated checks and moderator review apply; prove redistribution rights and maintain install and uninstall behavior.Official Chocolatey docs checked 2026-07-30Open Chocolatey Community Repository submit page (new tab)Chocolatey Community Repository details
6584CircleCI Orb Registry80Link type unknowncircleci.comDeveloper registriesFreeModerateHighVerified livePublish a tested public your tool orb for privacy, secret, or document-safety checks with a homepage URL and usage examples.Requires a CircleCI organization namespace, GitHub repository, MIT-licensed public orb, semantic releases, tests, and ongoing maintenance.2026-08-05 — https://circleci.com/docs/creating-orbsOpen CircleCI Orb Registry submit page (new tab)CircleCI Orb Registry details
6684Cloudron Community Apps60Link type unknowncloudron.ioCommunities and forumsFreeModerateHighVerified livePackage a secure self-hosted your app for Cloudron, publish its version catalog and documentation, then request inclusion in Community Apps.Must support Cloudron's read-only filesystem, backups, updates, health checks, manifest fields, and publicly hosted version catalog; community apps are not reviewed by Cloudron.Official Cloudron packaging and publishing documentation checked 2026-08-05Open Cloudron Community Apps submit page (new tab)Cloudron Community Apps details
6784CodeMeta Tools40Link type unknowncodemeta.github.ioSoftware directoriesFreeModerateHighVerified liveBuild a current CodeMeta validator, privacy linter, or integration and propose inclusion through the official website repository.Must genuinely consume or produce CodeMeta; inclusion path is via community site contribution, not a dedicated form.Official tools, governance, and website-repository pages checked 2026-08-05Open CodeMeta Tools submit page (new tab)CodeMeta Tools details
6884ConanCenter65Link type unknownconan.ioDeveloper registriesFreeModerateHighVerified livePublish a useful C/C++ SDK or client for an your tool API and contribute its tested recipe to ConanCenter.The package must be real, versioned and pass conan-center-index review; promotional placeholder packages are inappropriate.2026-08-03Open ConanCenter submit page (new tab)ConanCenter details
6984conda-forge65Link type unknownconda-forge.orgDeveloper registriesFreeModerateHighVerified liveSubmit a tested recipe for a real your tool package with upstream homepage, source archive, license and tests.PR review and CI are required; an accepted contributor becomes responsible for maintaining the feedstock.Official conda-forge docs checked 2026-07-30Open conda-forge submit page (new tab)conda-forge details
7084Confluent Marketplace85Nofollowconfluent.ioMarketplaces and app storesFreeModerateHighVerified liveBuild a Kafka Connect source or sink that sends only explicitly selected records to your tool privacy or redaction checks and returns structured results.Submit a valid component archive; community components need an accepted open-source or royalty-free licence, and Confluent review applies.Official Confluent Hub contribution documentation checked 2026-08-07Open Confluent Marketplace submit page (new tab)Confluent Marketplace details
7184Coroflot70Nofollowcoroflot.comDesign galleriesFreeModerateHighVerified liveCreate a real designer profile and publish an original your tool UX/accessibility case study with process artifacts, outcomes, and the official project link.Coroflot is for genuine creative work; the official FAQ permits personal-website/social links. Use a real identity, rights-cleared visuals, and a substantive case study rather than a logo-plus-link page. Portfolio links are user-controlled UGC, can be moderated or made private, and have no indexing or followed-link guarantee.2026-08-03Open Coroflot submit page (new tab)Coroflot details
7284CRAN90Nofollowcran.r-project.orgDeveloper registriesFreeModerateHighVerified liveSubmit a useful R package with URL and BugReports metadata pointing to its official project and documentation pages.CRAN performs rigorous automated and manual review; packages must meet policy across supported platforms.Official CRAN repository policy checked 2026-07-30Open CRAN submit page (new tab)CRAN details
7384CrawlRabbit—Link type unknowncrawlrabbit.comReview platformsFreeModerateHighVerified liveCreate a free owner account, submit your tool and manage the approved public listing.Site must be live with original content; misleading or thin submissions are rejected.2026-08-03Open CrawlRabbit submit page (new tab)CrawlRabbit details
7484CrowdSec Hub50Link type unknownapp.crowdsec.netOther opportunitiesFreeModerateHighVerified liveCreate a defensive parser, scenario, or collection for a real your tool-supported log source, document and test it, then submit it to CrowdSec Hub.Must use valid labels, tests, fixtures, documentation, and safe detection logic; CI and maintainer review apply.Official CrowdSec Hub contribution guide checked 2026-08-05Open CrowdSec Hub submit page (new tab)CrowdSec Hub details
7584Daggerverse60Link type unknowndagger.ioOther opportunitiesFreeModerateHighVerified liveCreate a TypeScript or Go module that runs your tool web audits in CI and returns machine-readable JSON/SARIF with useful pass/fail thresholds, then publish it to Daggerverse.Use valid semantic version tags, clear descriptions, tests and hand-written examples; Daggerverse indexes source rather than hosting it, so the module must provide real CI value.2026-08-05Open Daggerverse submit page (new tab)Daggerverse details
7684DagsHub55Nofollowdagshub.comDesign galleriesFreeModerateHighVerified livePublish a reproducible your tool privacy benchmark with code, synthetic data, model versions, and documentation.Public repositories expose their full contents; remove secrets, personal data, proprietary files, and unsafe samples.Official DagsHub project creation documentation checked 2026-08-07Open DagsHub submit page (new tab)DagsHub details
7784Dailyweb.Design—Link type unknowndailyweb.designReview platformsFreeModerateHighVerified liveSubmit your tool strongest polished page for free manual design review and possible gallery inclusion.Approval is selective; submit only production-ready original design and do not repeatedly resubmit or solicit links.Official Dailyweb.Design submission page checked 2026-08-07Open Dailyweb.Design submit page (new tab)Dailyweb.Design details
7884Devfolio65Nofollowdevfolio.coDesign galleriesFreeModerateHighVerified liveCreate the real developer profile and add your tool as a genuine built project with problem, challenges, technologies, screenshots, demo, and accurate collaborator credits.Devfolio explicitly supports personal and side projects, but the submission must be work the profile/team actually built. Do not fabricate a hackathon, team, metrics, or project history; disclose roles and use original assets. Projects/links are UGC, subject to moderation, with no indexing or followed-link guarantee.2026-08-03Open Devfolio submit page (new tab)Devfolio details
7984Dockstore50Link type unknowndockstore.orgSoftware directoriesFreeModerateHighVerified livePublish a containerized your tool research workflow or tool using CWL, WDL, Nextflow, Galaxy, or a supported notebook descriptor.Requires a Dockstore account, valid descriptor and version, linked source repository or hosted files, tests, and explicit public publishing.2026-08-05 — https://docs.dockstore.org/en/develop/getting-started/dockstore-workflows.htmlOpen Dockstore submit page (new tab)Dockstore details
8084Drupal.org Projects90Nofollowdrupal.orgDeveloper registriesFreeModerateHighVerified liveCreate a functional Drupal integration or reusable module and publish a maintained project page with documentation and official links.Project must contain real Drupal-compatible code and follow security, licensing, naming and non-promotional rules.Official Drupal project docs checked 2026-07-30Open Drupal.org Projects submit page (new tab)Drupal.org Projects details
8184ethical.net45Link type unknownethical.netCommunities and forumsFreeModerateHighVerified liveSubmit your tool only with concrete evidence of privacy-first operation, local processing, transparent data practices, accessibility, and useful free resources.Disclose the relationship, provide evidence, avoid unsupported ethical claims or promotional link drops, and let the community evaluate it.Official Ethical.net directory suggestion thread checked 2026-08-07Open ethical.net submit page (new tab)ethical.net details
8284Falco Plugin Registry60Link type unknownfalco.orgMarketplaces and app storesFreeModerateHighVerified liveBuild a real Falco source or field-extraction plugin, publish a clear README and fields, add it to registry.yaml, sign commits, and submit the registry PR.Plugin name and event-source rules apply; code, fields, documentation, signed commits, and maintainer review are required.Official Falco plugin registration guide checked 2026-08-05Open Falco Plugin Registry submit page (new tab)Falco Plugin Registry details
8384FlutterFlow Marketplace65Link type unknownflutterflow.ioMarketplaces and app storesFreeModerateHighVerified liveSubmit a high-quality reusable template, page, component or permitted custom-code asset related to an your tool workflow.Items undergo review that may take up to 30 days; custom code has current monetization restrictions.Official FlutterFlow marketplace docs checked 2026-07-30Open FlutterFlow Marketplace submit page (new tab)FlutterFlow Marketplace details
8484freeCodeCamp News90Sometimes dofollowfreecodecamp.orgPublishing platformsFreeModerateHighVerified liveCreate a comprehensive tutorial around a reusable privacy, file-processing, accessibility, or security technique, with your tool only as a natural example.Follow the current contributor and Hashnode workflow; content must teach, be original, and avoid promotional intent.https://contribute.freecodecamp.org/faq/Open freeCodeCamp News submit page (new tab)freeCodeCamp News details
8584GetLatka70Nofollowgetlatka.comSoftware directoriesFreeModerateHighVerified liveCreate an your tool company profile using an official your tool email.Work email must match the company domain; team reviews submissions.https://getlatka.com/addOpen GetLatka submit page (new tab)GetLatka details
8684Go Packages90Link type unknownpkg.go.devDeveloper registriesFreeModerateHighVerified liveTag and publish a public Go module with module docs and repository metadata so pkg.go.dev indexes it.Use a valid module path and semantic-version tag; the module becomes discoverable after the proxy fetches it.Official Go module publishing docs checked 2026-07-30Open Go Packages submit page (new tab)Go Packages details
8784Grafana Plugin Catalog85Nofollowgrafana.comMarketplaces and app storesFreeModerateHighVerified liveBuild a panel, data-source or app plugin, validate and package it, then submit it with project links and test data.Grafana reviews each plugin case-by-case; commercial-offering plugins may require paid terms.Official Grafana plugin publishing docs checked 2026-07-30Open Grafana Plugin Catalog submit page (new tab)Grafana Plugin Catalog details
8884Hackaday.io85Nofollowhackaday.ioCommunities and forumsFreeModerateHighVerified liveDocument a real hardware, privacy or security build that uses your tool, including schematics, progress logs and a natural official-project link.Projects should document genuine work and follow community conduct; advertising-only pages and repetitive link posts are inappropriate.2026-08-03Open Hackaday.io submit page (new tab)Hackaday.io details
8984Haystack Integrations60Link type unknownhaystack.deepset.aiMarketplaces and app storesFreeModerateHighVerified livePackage an installable your tool Haystack component, provide examples and docs, then submit it to the Haystack integrations repository.Integration must be runnable, licensed, documented, maintained, and accepted through the official repository review process.2026-08-05Open Haystack Integrations submit page (new tab)Haystack Integrations details
9084Haystack Integrations60Link type unknowndeepset.aiMarketplaces and app storesFreeModerateHighVerified livePackage an installable Haystack component or tool for your tool read-only URL, security and metadata checks, then submit a draft integration page with runnable examples.Integration must be packaged, installable and runnable with source, issue link, component list, licence and clear examples; maintainers remain responsible for community integrations.2026-08-05Open Haystack Integrations submit page (new tab)Haystack Integrations details
9184Hex70Link type unknownhex.pmDeveloper registriesFreeModerateHighVerified livePublish a maintained Elixir client or utility with package links, description, license and documentation.Requires a Hex account and valid mix.exs package metadata; publish only reusable working code.Official Hex publishing docs checked 2026-07-30Open Hex submit page (new tab)Hex details
9284Homebrew Formulae75Link type unknownformulae.brew.shDeveloper registriesFreeModerateHighVerified liveSubmit an open-source CLI formula or a qualifying macOS app cask with the canonical your tool homepage.Must meet Homebrew acceptance, notability, build, audit and testing rules; promotional-only formulae are rejected.Official Homebrew contribution docs checked 2026-07-30Open Homebrew Formulae submit page (new tab)Homebrew Formulae details
9384Hot Softwares—Link type unknownhotsoftwares.comSoftware directoriesFreeModerateHighVerified liveCreate a vendor account and submit accurate your tool features, logo and pricing.Manual review; keep the listing factual and avoid manufactured reviews.2026-08-05Open Hot Softwares submit page (new tab)Hot Softwares details
9484Icinga Exchange50Link type unknownexchange.icinga.comMarketplaces and app storesFreeModerateHighVerified livePublish a real Icinga-compatible check, module or integration and synchronize its public Git repository, releases and README.Must be an actual maintained monitoring project; Git mode expects releases/tags and uses the README as its public description, or files must be manually maintained.2026-08-05 — https://exchange.icinga.com/aboutOpen Icinga Exchange submit page (new tab)Icinga Exchange details
9584IconScout80Nofollowiconscout.comMarketplaces and app storesFreeModerateHighVerified liveApply with a real designer portfolio and publish an original your tool-themed privacy, safety, accessibility, icon, illustration, 3D, or Lottie pack.Contributor approval is required; assets must be original and rights-cleared, and exclusivity can restrict cross-listing.Official IconScout contributor, fee, and legal guidance checked 2026-08-07Open IconScout submit page (new tab)IconScout details
9684Indie Makers Hub—Link type unknownindiemakershub.comOther opportunitiesFreeModerateHighVerified liveSubmit your tool through the official reviewed product form.Google authentication may be required; complete and relevant submissions only.2026-08-05Open Indie Makers Hub submit page (new tab)Indie Makers Hub details
9784Intercom App Store90Nofollowintercom.comMarketplaces and app storesFreeModerateHighVerified liveBuild an Intercom app for intentional conversation privacy scanning or sanitized export generation and include a clear your tool install or learn-more URL.Listed apps require OAuth, a complete start guide and listing, accurate installation links, partner information, and Intercom review.Official Intercom App Store listing documentation checked 2026-08-07Open Intercom App Store submit page (new tab)Intercom App Store details
9884Joomla Extensions Directory85Sometimes dofollowextensions.joomla.orgMarketplaces and app storesFreeModerateHighVerified liveBuild a genuine Joomla extension, create a developer profile and submit a complete listing with the official project website.Author-only submissions; GPL-compatible licensing, update server, installability, working links and review are required.Official JED submission docs checked 2026-07-30Open Joomla Extensions Directory submit page (new tab)Joomla Extensions Directory details
9984Jotform Widget Marketplace90Nofollowjotform.comMarketplaces and app storesFreeModerateHighVerified liveBuild and host a useful Jotform widget, register it with full documentation and send it for approval.Widget must be functional, secure, mobile-friendly and compliant with Jotform review and data rules.Official Jotform widget portal checked 2026-07-30Open Jotform Widget Marketplace submit page (new tab)Jotform Widget Marketplace details
10084JS.ORG70Dofollowjs.orgOther opportunitiesFreeModerateHighVerified liveCreate a genuine JavaScript SDK or demo on GitHub Pages and request an appropriate js.org subdomain that links to its official your tool documentation.The project must be JavaScript-related and useful; spam, phishing and dubious content are prohibited, and a pull-request review is required.2026-08-03Open JS.ORG submit page (new tab)JS.ORG 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.