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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 148 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
198crates.io80Nofollowcrates.ioDeveloper registriesFreeModerateDo firstLive, conditionalPublish a genuine your tool Rust client, CLI, parser, or privacy library and set homepage, repository, README, license, and documentation metadata.Conditional on useful compiling code. Published versions are permanent; GitHub login, verified email, and API token are required.https://doc.rust-lang.org/cargo/reference/publishing.htmlOpen crates.io submit page (new tab)crates.io details
298Google Workspace Marketplace95Nofollowworkspace.google.comMarketplaces and app storesFreeModerateDo firstLive, conditionalBuild an your tool add-on for Drive, Docs, Sheets, Gmail, or another Workspace product and publish it.Must genuinely integrate with Google Workspace and pass OAuth, configuration, and app review.https://developers.google.com/workspace/marketplace/how-to-publishOpen Google Workspace Marketplace submit page (new tab)Google Workspace Marketplace details
398Kerala Startup Mission55Link type unknownstartupmission.kerala.gov.inStartup directoriesFreeModerateDo firstLive, conditionalApply using valid Startup India/DPIIT credentials and complete your tool startup profile for ecosystem visibility.Kerala registration, age, turnover and innovation criteria apply; verification and public visibility are conditional.2026-08-04Open Kerala Startup Mission submit page (new tab)Kerala Startup Mission details
498Maharashtra State Innovation Society30Link type unknownmsins.inStartup directoriesFreeModerateDo firstLive, conditionalChoose Startup Register and complete your tool verified entity, DPIIT, contact, product and website profile.Requires entity PAN, DPIIT number and truthful registered-company data; Maharashtra eligibility and verification apply.2026-08-04Open Maharashtra State Innovation Society submit page (new tab)Maharashtra State Innovation Society details
598MCP Registry70Link type unknownmodelcontextprotocol.ioDeveloper registriesFreeModerateDo firstLive, conditionalPackage a real your tool MCP server, verify its namespace, create server.json and publish it with mcp-publisher.Registry is in preview; package or remote server must be public and namespace ownership is validated.2026-08-04Open MCP Registry submit page (new tab)MCP Registry details
698Microsoft Marketplace100Nofollowmicrosoft.comMarketplaces and app storesFreeModerateDo firstLive, conditionalRegister in Partner Center and publish an your tool SaaS or Microsoft-integrated offer.Requires an eligible Partner Center account, offer configuration, testing, and certification.https://learn.microsoft.com/en-us/partner-center/marketplace-offers/create-new-saas-offerOpen Microsoft Marketplace submit page (new tab)Microsoft Marketplace details
798Open Source Technology Improvement Fund45Link type unknownostif.orgOther opportunitiesFreeModerateDo firstLive, conditionalRequest an audit for a mature open-source your tool security component, providing maintainer contacts, architecture, threat model, scope, tests, and a remediation commitment.Intended for real open-source projects able to collaborate throughout scoping, audit, fixes, disclosure, and publication of the final report; selection and funding are not guaranteed.2026-08-03Open Open Source Technology Improvement Fund submit page (new tab)Open Source Technology Improvement Fund details
898Packagist75Nofollowpackagist.orgDeveloper registriesFreeModerateDo firstLive, conditionalPublish a real your tool PHP SDK or integration from a public repository and set the canonical homepage in composer.json.Conditional on a functional Composer package with a unique vendor/name, public repository, valid metadata, and maintained releases.https://packagist.org/aboutOpen Packagist submit page (new tab)Packagist details
998PyPI90Nofollowpypi.orgDeveloper registriesFreeModerateDo firstLive, conditionalPublish a real your tool Python SDK, CLI, or integration package and set Homepage, Documentation, Source, and Issues URLs in package metadata.Conditional on maintaining a functional Python package; no placeholder packages, name squatting, or keyword stuffing.https://packaging.python.org/en/latest/specifications/well-known-project-urls/Open PyPI submit page (new tab)PyPI details
1098RubyGems.org80Nofollowrubygems.orgDeveloper registriesFreeModerateDo firstLive, conditionalPublish and maintain a genuine your tool Ruby client, CLI, or integration gem with accurate homepage, source, documentation, and changelog metadata.Conditional on a working Ruby gem; package names are unique and public releases should be treated as permanent.https://guides.rubygems.org/publishing/Open RubyGems.org submit page (new tab)RubyGems.org details
1198Slack Marketplace95Link type unknownslack.comMarketplaces and app storesFreeModerateDo firstLive, conditionalBuild a production-ready your tool Slack app for safe file/text utilities, then submit it from the app configuration page for Marketplace review.Must be fully functional, installable, tested outside the development workspace, secure, and useful inside Slack; review is strict.https://api.slack.com/directory/app-review-guideOpen Slack Marketplace submit page (new tab)Slack Marketplace details
1298Spreaker85Nofollowspreaker.comOther opportunitiesFreeModerateDo firstLive, conditionalCreate or import a genuine your tool show, keep it public, set its official Website field and publish useful episodes.Correct ownership and original/licensed audio are required; no promotional shell podcast.2026-08-04Open Spreaker submit page (new tab)Spreaker details
1398Startup Odisha40Link type unknownstartupodisha.gov.inStartup directoriesFreeModerateDo firstLive, conditionalRegister and apply with accurate your tool entity, innovation, workforce and website details if Odisha criteria are met.Odisha registration/workforce, age, turnover and innovation tests plus nodal review apply; profile is conditional.2026-08-04Open Startup Odisha submit page (new tab)Startup Odisha details
1495FeaturedCustomers60Sometimes dofollowfeaturedcustomers.comProfiles and entitiesFree + paid tierModerateDo firstLive, conditionalAdd the company, verify ownership, and supply genuine customer references, case studies, and brand assets.Designed for B2B software and services; customer references must be genuine and the vendor must pass verification.2026-08-03Open FeaturedCustomers submit page (new tab)FeaturedCustomers details
1595Podbean85Nofollowpodbean.comOther opportunitiesFree + paid tierModerateDo firstLive, conditionalPublish a real your tool episode and add contextual links to resources actually discussed in its show notes.No keyword stuffing or shell podcast; some custom show and episode website fields require Unlimited Audio or higher.2026-08-04Open Podbean submit page (new tab)Podbean details
1695Shopify App Store95Link type unknownshopify.comMarketplaces and app storesFree + paid tierModerateDo firstLive, conditionalBuild a real Shopify-facing your tool utility, complete its public listing, test it on a development store, and submit it for App Store review.Must integrate with Shopify, have a functional merchant UI, comply with data/privacy rules, and pass technical and listing review.https://shopify.dev/docs/apps/launch/app-store-reviewOpen Shopify App Store submit page (new tab)Shopify App Store details
1788FOSS United Grants45Link type unknownfossunited.orgOther opportunitiesPaidModerateDo firstLive, conditionalPropose a genuinely open-source, privacy-preserving your tool component with a public roadmap, Indian community benefit, budget, milestones, and maintenance plan.Funding is for FOSS creators, maintainers, projects, and communities in India; a closed-source commercial site or a marketing-only proposal is not eligible.2026-08-03Open FOSS United Grants submit page (new tab)FOSS United Grants details
1884Adobe Express Add-ons Marketplace95Nofollowadobe.comMarketplaces and app storesFreeModerateHighLive, conditionalBuild an your tool redaction, accessibility, image, or privacy add-on and submit its public listing.Requires an Adobe Express add-on, complete metadata/legal/support information, quality review, and compliant AI behavior.https://developer.adobe.com/express/add-ons/docs/guides/build/distribute/public-distOpen Adobe Express Add-ons Marketplace submit page (new tab)Adobe Express Add-ons Marketplace details
1984Agentic.ai—Link type unknownagentic.aiAI tool directoriesFreeModerateHighLive, conditionalSubmit only an your tool agent that independently decides, acts, and observes.Generic AI generators or static utilities are not considered agentic.https://agentic.ai/submitOpen Agentic.ai submit page (new tab)Agentic.ai details
2084AI ToolNet30Link type unknownaitoolnet.comAI tool directoriesFreeModerateHighLive, conditionalSubmit only your tool features that genuinely use AI, after checking for an existing listing and preparing accurate pricing and use cases.AI tools only, with manual approval and no duplicates; avoid reciprocal-link tactics used solely to influence search rankings.2026-08-03Open AI ToolNet submit page (new tab)AI ToolNet details
2184Airbyte Connector Marketplace70Nofollowairbyte.comMarketplaces and app storesFreeModerateHighLive, conditionalCreate a real source connector that lets consenting users export appropriate your tool data, provide tests and documentation, and contribute it to Airbyte's public connector catalog.Only build this when AltFTool has a stable documented API and a legitimate data-movement use case. Follow Airbyte connector specifications, CI, acceptance tests, review rules, and security disclosure guidance; do not submit a thin promotional connector.2026-08-03Open Airbyte Connector Marketplace submit page (new tab)Airbyte Connector Marketplace details
2284Amazon Music for Podcasters95Nofollowpodcasters.amazon.comOther opportunitiesFreeModerateHighLive, conditionalSubmit and verify one genuine your tool podcast feed for distribution on Amazon Music and Audible.RSS must expose a valid owner email; rights, license, and platform rules apply, and review may take up to one week.2026-08-05Open Amazon Music for Podcasters submit page (new tab)Amazon Music for Podcasters details
2384APILayer Marketplace60Link type unknownapilayer.comMarketplaces and app storesFreeModerateHighLive, conditionalPublish a stable, documented your tool API and apply as a provider with examples, uptime, support, and honest pricing.A deployed API, test environment, documentation, performance, and review are required; duplicate or weak APIs may be rejected.2026-08-05Open APILayer Marketplace submit page (new tab)APILayer Marketplace details
2484Castbox75Nofollowcastbox.fmOther opportunitiesFreeModerateHighLive, conditionalAdd or claim a real your tool podcast in Creator Studio and complete channel, site and episode metadata.Must own the show and verify access to its RSS email; publish original audio content.2026-08-04Open Castbox submit page (new tab)Castbox details
2584Chocolatey Community Repository75Nofollowchocolatey.orgDeveloper registriesFreeModerateHighLive, conditionalShip a real your tool CLI or desktop utility as a tested package with homepage, project and support metadata.Requires distributable software, legal rights, repeatable install/uninstall, tests, malware scan and moderation.2026-08-04Open Chocolatey Community Repository submit page (new tab)Chocolatey Community Repository details
2684Datadog Integrations85Nofollowdatadoghq.comMarketplaces and app storesFreeModerateHighLive, conditionalApply as a Datadog Technology Partner and build a production-grade integration that sends meaningful your tool telemetry, includes dashboards and documentation, and is useful to shared customers.A real integration and Technology Partner application are required. Follow Datadog's telemetry, OAuth/API, asset, sandbox testing, security, review, and maintenance requirements. Marketplace commercial offers are a separate program.2026-08-03Open Datadog Integrations submit page (new tab)Datadog Integrations details
2784Discord App Directory95Nofollowdiscord.comSoftware directoriesFreeModerateHighLive, conditionalBuild and verify an your tool Discord app, then enable Discovery in the Developer Portal.App must meet verification and Discovery qualification criteria before appearing publicly.https://docs.discord.com/developers/discovery/enabling-discoveryOpen Discord App Directory submit page (new tab)Discord App Directory details
2884Docker Hub90Nofollowdocker.comDeveloper registriesFreeModerateHighLive, conditionalPublish a maintained your tool CLI or server image with source, documentation, descriptions and canonical homepage links.Ship a scanned, reproducible and maintained image; public presence is not Docker verification and fair-use limits apply.2026-08-05 official Docker Hub repository and usage documentationOpen Docker Hub submit page (new tab)Docker Hub details
2984Elastic Integrations85Nofollowelastic.coMarketplaces and app storesFreeModerateHighLive, conditionalBuild an Elastic package that ingests legitimate your tool logs, metrics, or traces and supplies mappings, pipelines, dashboards, documentation, sample data, and automated tests.Use elastic-package, follow the package specification and ECS conventions, test locally, document permissions and supported versions, use lawful brand assets, and submit a reviewed pull request. Every accepted integration is listed publicly, so low-value promotional packages are inappropriate.2026-08-03Open Elastic Integrations submit page (new tab)Elastic Integrations details
3084Firefox Add-ons95Nofollowmozilla.orgMarketplaces and app storesFreeModerateHighLive, conditionalBuild a useful privacy-preserving your tool extension, submit a signed build, and provide honest homepage, permissions and privacy disclosures.Must meet Mozilla Add-on Policies, minimize permissions and pass review; thin promotional wrappers are unsuitable.2026-08-05 official Firefox Add-ons developer pageOpen Firefox Add-ons submit page (new tab)Firefox Add-ons details
3184FOSSHub70Link type unknownfosshub.comSoftware directoriesFreeModerateHighLive, conditionalApply with a signed, downloadable open-source or qualifying freeware build that needs reliable binary hosting, malware scanning, and a public project page.FOSSHub reviews applications and accepts only qualifying open-source or freeware projects under its terms; a web-only homepage with no downloadable artifact is not a fit.2026-08-03Open FOSSHub submit page (new tab)FOSSHub details
3284GitBook Integration Marketplace80Nofollowgitbook.comMarketplaces and app storesFreeModerateHighLive, conditionalBuild a real your tool documentation/privacy integration, publish it as public, test it, then submit for GitBook review.Requires a functional public GitBook integration, manifest metadata, external testing, screenshots and marketplace review.https://gitbook.com/docs/developers/integrations/submit-your-app-for-reviewOpen GitBook Integration Marketplace submit page (new tab)GitBook Integration Marketplace details
3384Google Open Source Insights60Link type unknowndeps.devDeveloper registriesFreeModerateHighLive, conditionalPublish a useful your tool package to a supported registry with accurate source and homepage metadata so Open Source Insights can index it.No promotional manual submission; only genuine public packages in supported ecosystems are indexed and the homepage link depends on package metadata.2026-08-05 official deps.dev About and documentationOpen Google Open Source Insights submit page (new tab)Google Open Source Insights details
3484Home Assistant Integrations85Link type unknownhome-assistant.ioMarketplaces and app storesFreeModerateHighLive, conditionalBuild and maintain a genuinely useful Home Assistant integration for a mature your tool service, including the required Python client library, tests, documentation, and a focused Core pull request.Home Assistant rejects integrations used mainly as marketing; the connected product must already be released, established, and useful to its users. New integrations must meet at least Bronze quality requirements and pass review. If AltFTool is not yet established enough, publish a custom integration through GitHub/HACS instead.2026-08-03Open Home Assistant Integrations submit page (new tab)Home Assistant Integrations details
3584IFTTT Services90Nofollowifttt.comMarketplaces and app storesFreeModerateHighLive, conditionalJoin the partner platform and create a secure your tool service with genuinely useful triggers, queries, and actions, pass endpoint tests and review, then publish helpful Applets for real user workflows.AltFTool needs a stable API, authentication, privacy-safe endpoints, reliable production hosting, support, and ongoing maintenance. Follow IFTTT service-design, endpoint, brand, review, and launch rules; publication is for working integrations, not a brand-only profile.2026-08-03Open IFTTT Services submit page (new tab)IFTTT Services details
3684Kaggle90Nofollowkaggle.comCommunities and forumsFreeModerateHighLive, conditionalPublish a clean your tool benchmark or open dataset plus a reproducible notebook, with proper licensing and the canonical project URL in the data card.Only publish useful non-sensitive data/code; remove secrets and PII, document methodology, choose a valid license, and avoid promotional-only datasets.https://www.kaggle.com/datasetsOpen Kaggle submit page (new tab)Kaggle details
3784LinuxLinks60Dofollowlinuxlinks.comOther opportunitiesFreeModerateHighLive, conditionalSubmit a maintained your tool desktop or CLI utility only after it runs natively on a modern Linux distribution and has a public OSI-approved license and repository.The program must be open source, current, searchable as not already covered, buildable on modern Linux, and accompanied by its repository, license, website, and factual feature summary.2026-08-03Open LinuxLinks submit page (new tab)LinuxLinks details
3884Local-First Software (LoFi)—Link type unknownlofi.soSoftware directoriesFreeModerateHighLive, conditionalPropose eligible your tool client-side or offline-first tools to the public directory with accurate site and source links.The product must genuinely keep user data local and meet the directory's local-first scope; submit a human-reviewed PR.2026-08-05Open Local-First Software (LoFi) submit page (new tab)Local-First Software (LoFi) details
3984Mixcloud90Nofollowmixcloud.comOther opportunitiesFreeModerateHighLive, conditionalUpload an original your tool audio explainer and place relevant resource links naturally in the show description.Owned or licensed genuine audio only; no synthetic link-only upload, and basic-tier limits apply.2026-08-04Open Mixcloud submit page (new tab)Mixcloud details
4084New Relic Instant Observability90Link type unknownnewrelic.comOther opportunitiesFreeModerateHighLive, conditionalCreate a useful quickstart for monitoring a real your tool deployment, with instrumentation instructions, a working data source, dashboards, alerts, documentation, and a GitHub contribution.Telemetry must actually reach New Relic and the quickstart must help users monitor a real use case. Follow catalog schema, asset, testing, GitHub review, and maintenance requirements; do not submit a brand-only listing.2026-08-03Open New Relic Instant Observability submit page (new tab)New Relic Instant Observability details
4184ODIPA Community Privacy Tools—Link type unknownodipa.orgSoftware directoriesFreeModerateHighLive, conditionalSubmit a mature your tool privacy component for technical and security review.Open-source privacy tool only; dependency scan, manual review and board approval apply.2026-08-05Open ODIPA Community Privacy Tools submit page (new tab)ODIPA Community Privacy Tools details
4284Open Collective85Nofollowopencollective.comProfiles and entitiesFreeModerateHighLive, conditionalCreate a genuine your tool collective, complete its public profile, and add the official website plus repository/social links.Use only for a real community or open-source project; keep team, purpose and financial details accurate.2026-08-05Open Open Collective submit page (new tab)Open Collective details
4384OpenSourceFest—Link type unknownopensourcefest.orgDeveloper registriesFreeModerateHighLive, conditionalSubmit a maintained your tool open-source project through Submit a Project.Editors review license, activity and quality; proprietary web-only tools do not qualify.2026-08-05Open OpenSourceFest submit page (new tab)OpenSourceFest details
4484OpenSSF Scorecard40Link type unknownscorecard.devDeveloper registriesFreeModerateHighLive, conditionalRun Scorecard on a public your tool component, enable published results, remediate checks, and link the public viewer from repository documentation.Public repository and admin rights are required; scores are heuristic and website exposure is indirect through accurate repository metadata.2026-08-05 official Scorecard site and OpenSSF repositoryOpen OpenSSF Scorecard submit page (new tab)OpenSSF Scorecard details
4584Openwall oss-security75Link type unknownopenwall.comSoftware directoriesFreeModerateHighLive, conditionalPost only a self-contained initial announcement of a substantial open-source defensive tool, a major update, or a properly coordinated OSS vulnerability disclosure.The list is for OSS security, not promotion. Tool posts should be rare, technically detailed, and especially useful for improving other open-source software; minor updates and cross-posting are discouraged.2026-08-03Open Openwall oss-security submit page (new tab)Openwall oss-security details
4684PeerSpot70Link type unknownpeerspot.comSoftware directoriesFreeModerateHighLive, conditionalContact PeerSpot with your tool enterprise use cases and real-customer evidence to request inclusion.PeerSpot says listings are not pay-to-play, but the product must be enterprise-class and have real customers; never manufacture reviews.2026-08-03Open PeerSpot submit page (new tab)PeerSpot details
4784Podcast Addict70Link type unknownpodcastaddict.comOther opportunitiesFreeModerateHighLive, conditionalSubmit a valid public your tool podcast feed and keep website and episode-link metadata accurate.Feed must contain playable genuine episodes; directory review may take time.2026-08-04Open Podcast Addict submit page (new tab)Podcast Addict details
4884Podchaser75Nofollowpodchaser.comProfiles and entitiesFreeModerateHighLive, conditionalClaim a genuine your tool show, verify ownership, and complete its official website and creator details.Ownership verification by feed email or token is required; never create a fake podcast for links.2026-08-04Open Podchaser submit page (new tab)Podchaser details
4984protocols.io75Link type unknownprotocols.ioDeveloper registriesFreeModerateHighLive, conditionalPublish a reproducible your tool testing, privacy-analysis or accessibility-evaluation method and cite relevant project resources.Submissions must contribute genuine experimental or computational research methods; non-scientific promotion may be removed.2026-08-04Open protocols.io submit page (new tab)protocols.io details
5084Railway Templates70Link type unknownrailway.comMarketplaces and app storesFreeModerateHighLive, conditionalPublish a maintained your tool open-source service template with safe variables, health checks, documentation and a demo.Must be a reusable deployable template; never include secrets and provide active maintenance.2026-08-04Open Railway Templates submit page (new tab)Railway Templates details
5184REUSE API50Link type unknownreuse.softwareOther opportunitiesFreeModerateHighLive, conditionalMake a real public your tool repository REUSE-compliant, register its Git URL, and link the resulting compliance page from project docs.Public maintained repository only; main branch is checked and email confirmation is required; fix findings rather than using a decorative badge.2026-08-05 official REUSE API and register pagesOpen REUSE API submit page (new tab)REUSE API details
5284Splunkbase90Link type unknownsplunk.comMarketplaces and app storesFreeModerateHighLive, conditionalBuild a useful Splunk app or add-on for legitimate your tool security, audit, or operational data; package it with clear documentation, icons, screenshots, release metadata, and support details.The package must pass structural, antivirus, security, and AppInspect checks plus admin review. Choose hosted versus external directory listing carefully because the hosting mode cannot be changed after publication; keep the app maintained and accurately supported.2026-08-03Open Splunkbase submit page (new tab)Splunkbase details
5384Spotify for Creators95Nofollowcreators.spotify.comOther opportunitiesFreeModerateHighLive, conditionalHost or claim a genuine your tool show, verify the RSS email, and publish accurate episode notes with relevant HTTPS resources.Ownership verification is required; links must support real episode content and display behavior varies by app.2026-08-05Open Spotify for Creators submit page (new tab)Spotify for Creators details
5484Swagger Studio75Nofollowapp.swaggerhub.comOther opportunitiesFreeModerateHighLive, conditionalPublish a real your tool OpenAPI definition publicly with an accurate description and external documentation URL.API must be genuine and the spec valid; set visibility to public and publication status accurately, with no credentials in examples.https://support.smartbear.com/swagger/studio/docs/en/manage-apis/publish-an-api.htmlOpen Swagger Studio submit page (new tab)Swagger Studio details
5584TODO Group OSPO Landscape55Link type unknowntodogroup.orgSoftware directoriesFreeModerateHighLive, conditionalCreate a real your tool OSPO function or a tool that materially supports OSPO work, then contribute the logo and canonical URL by issue or pull request.Adopters must meet the OSPO definition; tools must genuinely support governance, SBOM, compliance, security, documentation or community health.2026-08-05 official TODO Group landscape repository and documentationOpen TODO Group OSPO Landscape submit page (new tab)TODO Group OSPO Landscape details
5684Vercel Integrations Marketplace90Link type unknownvercel.comMarketplaces and app storesFreeModerateHighLive, conditionalBuild an your tool Vercel integration, distribute its page, gain adoption, then apply for Marketplace visibility.Community integrations can use direct pages; Marketplace listing generally requires 500 active installs and review.https://vercel.com/docs/integrations/create-integrationOpen Vercel Integrations Marketplace submit page (new tab)Vercel Integrations Marketplace details
5784Xero App Store85Nofollowdeveloper.xero.comMarketplaces and app storesFreeModerateHighLive, conditionalBuild an your tool accounting/privacy integration, validate it with customers, certify and publish it in the Xero App Store.Requires a real Xero integration and at least three customers for certification; technical and partner review apply.https://developer.xero.com/static/otherfiles/Grow-with-the-Xero-App-Store.pdfOpen Xero App Store submit page (new tab)Xero App Store details
5881Apple Podcasts for Creators100Nofollowpodcasters.apple.comOther opportunitiesFree + paid tierModerateHighLive, conditionalSubmit a genuine your tool podcast RSS feed in Podcasts Connect and include the official show website in valid metadata.Requires at least one episode, compliant RSS, artwork, content rights, technical validation, and Apple review.2026-08-05Open Apple Podcasts for Creators submit page (new tab)Apple Podcasts for Creators details
5981JetBrains Marketplace90Nofollowplugins.jetbrains.comMarketplaces and app storesFree + paid tierModerateHighLive, conditionalBuild and upload a useful your tool IntelliJ-platform plugin with vendor, license, source, support and compatibility links.Every plugin is reviewed and must pass compatibility, security and privacy checks; no promotional shell.2026-08-04Open JetBrains Marketplace submit page (new tab)JetBrains Marketplace details
6081Luma80Nofollowluma.comOther opportunitiesFree + paid tierModerateHighLive, conditionalPublish a real your tool webinar, demo or workshop with a contextual canonical link in its event details.Event details and host identity must be genuine; do not create empty or duplicate promotional events.2026-08-05Open Luma submit page (new tab)Luma details
6181Pabbly Connect Developer60Link type unknownpabbly.comMarketplaces and app storesFree + paid tierModerateHighLive, conditionalBuild a working your tool connector with useful triggers or actions and submit it for the Pabbly Connect integration catalog.Requires REST API knowledge, a functioning integration and Pabbly best-practice review; do not create an empty listing.2026-08-05Open Pabbly Connect Developer submit page (new tab)Pabbly Connect Developer details
6280Albato App Integrator50Link type unknownalbato.comMarketplaces and app storesNot statedModerateHighLive, conditionalBuild and test an your tool API integration, then request publication in Albato's public app library.Requires documented API access, working authentication, tested triggers/actions and compliance with publication rules.2026-08-05Open Albato App Integrator submit page (new tab)Albato App Integrator details
6380Dealify45Link type unknowndealify.comMarketplaces and app storesNot statedModerateHighLive, conditionalPropose a truthful lifetime, annual, credit-based, or freebie campaign with clear limits and customer support terms.Dealify vets products; do not create an artificial discount, and confirm refund, support, payout, and campaign obligations before launch.2026-08-03Open Dealify submit page (new tab)Dealify details
6480India SME Forum45Link type unknownindiasmeforum.orgCommunities and forumsNot statedModerateHighLive, conditionalSubmit a truthful MSME membership request with your tool entity, business, contact and website details.India MSME only, executive-board approval required; verify the latest tier price before payment.2026-08-04Open India SME Forum submit page (new tab)India SME Forum details
6580NASSCOM Membership70Link type unknownnasscom.inOther opportunitiesNot statedModerateHighLive, conditionalApply using an India-registered your tool company/startup and provide the required entity and revenue documents.Due diligence may take 10–15 business days and include documents, calls or a site visit; membership is not guaranteed.2026-08-04Open NASSCOM Membership submit page (new tab)NASSCOM Membership details
6680SaaS Mantra—Link type unknownsaasmantra.comMarketplaces and app storesNot statedModerateHighLive, conditionalPitch a sustainable your tool lifetime or annual offer with redemption flow, onboarding, roadmap, and support capacity.Use only if a genuine deal is financially sustainable; curation, customer support, refunds, and negotiated campaign terms apply.2026-08-03Open SaaS Mantra submit page (new tab)SaaS Mantra details
6780Workato Community Library75Link type unknownworkato.comCommunities and forumsNot statedModerateHighLive, conditionalBuild a tested Workato connector for legitimate your tool triggers and actions, add clear support and usage documentation, publish it to the community library, and provide simple successful community recipes.The connector must pass Workato review and accept the developer agreement. Remove secrets, accurately choose open- or closed-source visibility, provide support contact details, meaningful tags and docs, test every action and trigger, and maintain shared versions; do not publish a promotional shell.2026-08-03Open Workato Community Library submit page (new tab)Workato Community Library details
6874Apple App Store100Nofollowdeveloper.apple.comMarketplaces and app storesPaidModerateHighLive, conditionalShip a real your tool iOS or macOS app and add the product, support and privacy URLs in App Store Connect.Requires Apple Developer membership, native app functionality, privacy disclosures and successful App Review.https://developer.apple.com/app-store/submitting/Open Apple App Store submit page (new tab)Apple App Store details
6974Google Play100Nofollowplay.google.comMarketplaces and app storesPaidModerateHighLive, conditionalPublish a genuine your tool Android app and use the website, support and privacy-policy fields for official links.Developer verification, testing requirements, privacy/data-safety disclosures and Play policy compliance are required.https://play.google.com/console/about/Open Google Play submit page (new tab)Google Play details
7074IAAP45Link type unknownaccessibilityassociation.orgOther opportunitiesPaidModerateHighLive, conditionalEnroll an eligible your tool entity as a small-organization Associate Corporate member and opt into the directory.Approval and membership terms apply; strong fit requires genuine accessibility practice and participation.2026-08-04Open IAAP submit page (new tab)IAAP details
7174IDSA50Link type unknownidsalliance.orgProfiles and entitiesPaidModerateHighLive, conditionalChoose an appropriate corporate, partner or vendor tier and apply with your tool genuine identity-security work.Identity/security relevance and approval required; the official benefit includes an IDSA website listing.2026-08-04Open IDSA submit page (new tab)IDSA details
7274Kantara Initiative55Link type unknownkantarainitiative.orgProfiles and entitiesPaidModerateHighLive, conditionalUse the organization signup path and participate in relevant identity, privacy or assurance working groups.Community and standards participation are expected; membership should not be purchased solely for a backlink.2026-08-04Open Kantara Initiative submit page (new tab)Kantara Initiative details
7374MyData Global45Link type unknownmydata.orgOther opportunitiesPaidModerateHighLive, conditionalJoin as an eligible small business and opt in to publication of your tool organization name and profile.Strong fit only if AltFTool commits to human-centric data-rights principles; not for backlink-only membership.2026-08-04Open MyData Global submit page (new tab)MyData Global details
7474Open Source Collective40Link type unknownoscollective.orgProfiles and entitiesPaidModerateHighLive, conditionalApply for fiscal hosting only for a legitimate open-source your tool project or community with active development, public impact, and preferably two project administrators.OSC reviews legitimacy, open-source alignment, and its hosting terms. It does not host an individual spanning unrelated projects; project finances become transparent and formal agreements require host approval.2026-08-03Open Open Source Collective submit page (new tab)Open Source Collective details
7574OpenID Foundation80Link type unknownopenid.netProfiles and entitiesPaidModerateHighLive, conditionalJoin as a small organization if your tool genuinely implements or contributes to OpenID, OAuth or related identity standards.Standards participation and truthful brand use are expected; company name/logo visibility should not be the sole reason to join.2026-08-04Open OpenID Foundation submit page (new tab)OpenID Foundation details
7674OWASP Foundation Projects85Link type unknownowasp.orgSoftware directoriesPaidModerateHighLive, conditionalOffer a standalone, vendor-neutral security tool or documentation project with open governance and a committed leader, then submit the official new-project request.OWASP projects must be genuinely open source and maintained as community projects; approval is required, official source hosting is mandated, and the project page must be created within the stated onboarding period. Do not submit a branded sales funnel.2026-08-03Open OWASP Foundation Projects submit page (new tab)OWASP Foundation Projects details
7774PitchGround55Link type unknownpitchground.comMarketplaces and app storesPaidModerateHighLive, conditionalCreate the product in PitchGround's vendor dashboard and prepare a tested redemption, onboarding, documentation, and support flow.A functional SaaS and sustainable offer are required; review the 60-day refund maturation, payout threshold, support, and testing rules first.2026-08-03Open PitchGround submit page (new tab)PitchGround details
7866AINative Studio Ecosystem—Link type unknownainative.studioAI tool directoriesFreeModerateMediumLive, conditionalOpen a pull request for a genuine AI-native your tool component with repository metadata.AI-native open-source tool only; YAML contribution is reviewed weekly.2026-08-05Open AINative Studio Ecosystem submit page (new tab)AINative Studio Ecosystem details
7966Amazon Appstore95Nofollowamazon.comMarketplaces and app storesFreeModerateMediumLive, conditionalSubmit a tested your app for compatible Amazon devices with complete descriptions, support links, privacy details and store assets.Requires a real APK/AAB or VPKG, physical-device testing, policy compliance and review; not intended for generic promotional wrappers.2026-08-05 official Amazon Appstore submission guideOpen Amazon Appstore submit page (new tab)Amazon Appstore details
8066arXiv95Nofollowarxiv.orgDeveloper registriesFreeModerateMediumLive, conditionalSubmit an original your tool-related technical paper and cite your tool only where it is genuinely the software or study subject.Requires scholarly content in an accepted category, author registration and sometimes endorsement; promotional papers are inappropriate.https://info.arxiv.org/help/submit/index.htmlOpen arXiv submit page (new tab)arXiv details
8166AsyncAPI Tools Dashboard60Link type unknownasyncapi.comSoftware directoriesFreeModerateMediumLive, conditionalIf your tool ships a real tool that reads, validates, generates, visualizes, or otherwise supports AsyncAPI documents, add the required .asyncapi-tool metadata file and submit it for the public tools dashboard.Only submit an actually usable AsyncAPI-related tool with accurate metadata, documentation, repository or supported manual entry, and maintained compatibility. A generic AltFTool product listing or promotional backlink does not qualify.2026-08-03Open AsyncAPI Tools Dashboard submit page (new tab)AsyncAPI Tools Dashboard details
8266Backstage Plugin Directory70Link type unknownbackstage.ioMarketplaces and app storesFreeModerateMediumLive, conditionalBuild and openly maintain a Backstage plugin that gives platform teams a real your tool workflow, then announce it through the community-plugins process and meet directory metadata requirements.The plugin must solve a genuine developer-platform problem and follow Backstage's frontend/backend systems, design guidance, repository rules, testing, review, licensing, and release process. Create the recommended community issue before contributing; avoid a promotional shell.2026-08-03Open Backstage Plugin Directory submit page (new tab)Backstage Plugin Directory details
8366Developers Italia55Link type unknowndevelopers.italia.itSoftware directoriesFreeModerateMediumLive, conditionalIf an your tool component is open source and genuinely targeted at public administration, add valid publiccode.yml metadata so the catalogue crawler can discover it.Catalogue is for software released by public administrations or third-party open source aimed at the public sector; metadata claims are self-declared and must be accurate.2026-08-05 official Developers Italia Get Involved and publiccode.yml guidanceOpen Developers Italia submit page (new tab)Developers Italia details
8466Docusaurus Showcase75Link type unknowndocusaurus.ioDesign galleriesFreeModerateMediumLive, conditionalIf your tool documentation genuinely runs on Docusaurus, add the polished docs site through the official showcase discussion.Framework use is mandatory; maintain a polished live site and follow the current GitHub discussion template.2026-08-05Open Docusaurus Showcase submit page (new tab)Docusaurus Showcase details
8566Flathub75Nofollowflathub.orgMarketplaces and app storesFreeModerateMediumLive, conditionalSubmit a mature graphical Linux your app with verified metadata, screenshots, homepage and source links.Strictly requires a functional Flatpak; current Flathub policy disallows generative-AI-assisted submission code, content and review comments.Official Flathub submission docs checked 2026-07-30Open Flathub submit page (new tab)Flathub details
8666Grav GPM70Link type unknowngetgrav.orgMarketplaces and app storesFreeModerateMediumLive, conditionalCreate a useful Grav privacy or security plugin and request inclusion through the official repository issue process.Team reviews code and metadata against project standards; blueprint, release and homepage fields must be accurate.2026-08-05 official Grav GPM documentationOpen Grav GPM submit page (new tab)Grav GPM details
8766GrowYG—Link type unknowngrowyg.co.inStartup directoriesFreeModerateMediumLive, conditionalApply as a startup with your tool website, category, location, description and product details.Admin approval required; platform is early-stage and currently has limited live profiles.2026-08-03Open GrowYG submit page (new tab)GrowYG details
8866HackMD75Nofollowhackmd.ioDeveloper registriesFreeModerateMediumLive, conditionalCreate a substantive public tutorial or implementation note that uses your tool and includes a contextual source/product link.Public notes must provide original useful content; avoid duplicated marketing copy and disclose affiliation where appropriate.https://hackmd.io/c/tutorials/%2Fs%2Fhow-to-publish-noteOpen HackMD submit page (new tab)HackMD details
8966Harvard Dataverse95Link type unknowndataverse.harvard.eduDeveloper registriesFreeModerateMediumLive, conditionalDeposit a genuine your tool benchmark, evaluation dataset or reproducibility bundle with project URL in the description/metadata.Account and appropriate collection permissions are required; data must have lawful sharing rights and complete citation metadata.https://guides.dataverse.org/en/latest/user/dataset-management.htmlOpen Harvard Dataverse submit page (new tab)Harvard Dataverse details
9066Homebrew75Link type unknownbrew.shOther opportunitiesFreeModerateMediumLive, conditionalAfter releasing a real your tool CLI or native app, submit a tested formula or cask with its canonical homepage.Formula must meet open-source, stability, build and test rules; casks need a supported upstream binary and notability may affect acceptance.2026-08-05 official Homebrew Adding Software and Acceptable Formulae guidesOpen Homebrew submit page (new tab)Homebrew details
9166Huawei AppGallery90Nofollowdeveloper.huawei.comMarketplaces and app storesFreeModerateMediumLive, conditionalPublish an your tool Android app through AppGallery Connect with official site, support and privacy URLs.Identity verification, app package, localized metadata, privacy policy and AppGallery review are required.https://developer.huawei.com/consumer/en/appgallery/Open Huawei AppGallery submit page (new tab)Huawei AppGallery details
9266Internet Archive95Nofollowarchive.orgSoftware directoriesFreeModerateMediumLive, conditionalArchive an authentic your tool release, manual or research artifact with accurate metadata and official source URL.Upload only material you own or may redistribute; item metadata must describe a real archival object, not an SEO-only page.https://archive.org/create/Open Internet Archive submit page (new tab)Internet Archive details
9366IzzyOnDroid40Link type unknownizzyondroid.comSoftware directoriesFreeModerateMediumLive, conditionalIf your tool releases a suitable open-source Android app, request inclusion with public source, tagged APK releases, Fastlane metadata and website links.Must meet the current inclusion policy, disclose anti-features, avoid silent binary downloads, pass scans and remain maintained; review is strict.2026-08-05 official IzzyOnDroid repository README, inclusion policy and current issue routeOpen IzzyOnDroid submit page (new tab)IzzyOnDroid details
9466JitPack65Link type unknownjitpack.ioDeveloper registriesFreeModerateMediumLive, conditionalRelease a useful your tool JVM or Android library from GitHub with a working build, release tag, README and canonical project links.JitPack builds on demand; a valid Gradle, Maven, SBT or Leiningen build and real reusable library are required.2026-08-05 official JitPack introduction and build guideOpen JitPack submit page (new tab)JitPack details
9566JSON Schema Store55Link type unknownschemastore.orgOther opportunitiesFreeModerateMediumLive, conditionalAfter your tool has a stable, commonly used JSON or YAML configuration format, contribute its accurate schema and test fixtures so editors can provide validation, completion, and tooltips.SchemaStore is for known file formats, not marketing pages. The schema must be valid, match real files, include the required catalog metadata and tests, pass CI, and stay synchronized with product changes; submit through the community repository review process.2026-08-03Open JSON Schema Store submit page (new tab)JSON Schema Store details
9666Kirby Plugins50Link type unknownplugins.getkirby.comMarketplaces and app storesFreeModerateMediumLive, conditionalBuild an your tool metadata-cleaning, accessibility or privacy plugin and submit its repository and cover image.Needs functional Kirby-specific value, a clear README, licence and maintained Git tags; submission is reviewed.2026-08-05 official Kirby Plugins submission pageOpen Kirby Plugins submit page (new tab)Kirby Plugins details
9766Krew55Link type unknownkrew.sigs.k8s.ioMarketplaces and app storesFreeModerateMediumLive, conditionalBuild a real kubectl your tool privacy or security scanner and submit its release manifest with a canonical project homepage.Plugin must be open source, independently useful, SemVer-released and tested; maintainers review every submission.2026-08-05 official Krew new-plugin developer guideOpen Krew submit page (new tab)Krew details
9866Nixpkgs75Link type unknownnixos.orgDeveloper registriesFreeModerateMediumLive, conditionalPackage a real your tool CLI or desktop utility, set accurate homepage metadata, test it, and submit the Nixpkgs pull request.Package must build reproducibly, meet Nixpkgs standards and pass review; the homepage shown on search.nixos.org must be canonical.2026-08-05 official Nixpkgs manual and NixOS contribution guideOpen Nixpkgs submit page (new tab)Nixpkgs details
9966NLnet Foundation65Link type unknownnlnet.nlOther opportunitiesFreeModerateMediumLive, conditionalApply with a concrete your tool privacy, security or user-autonomy FOSS work package, milestones, budget and public repository.Highly selective; active-call fit and fully FOSS/open results required. Only accepted projects receive a linked public page.2026-08-04Open NLnet Foundation submit page (new tab)NLnet Foundation details
10066OnePageCRM Integration Marketplace65Link type unknownonepagecrm.comMarketplaces and app storesFreeModerateMediumLive, conditionalBuild a working OnePageCRM integration and apply for testing, verification and a dedicated marketplace page.A live or actively built integration is required; technical/UX review and partner approval control publication.https://www.onepagecrm.com/partner-program/integrations/Open OnePageCRM Integration Marketplace submit page (new tab)OnePageCRM Integration Marketplace 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.