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A maintained list of 1,854 legitimate backlink sites: directories, profile creation sites, guest posting sites, launch platforms, registries and marketplaces. 1,532 are free or have a free tier, 44 usually give a dofollow link, and 772 have an estimated DA of 70 or more. Every row shows authority, link type, cost and effort, and links straight to the submit page.
Recommend your official API with its documentation URL, concise Markdown description, category, and technical details.
When your tool exposes a stable public API, host an official OpenAPI definition at a permanent URL and submit it with accurate ownership, category, logo, and metadata.
Submit your mature self-hosted edition using the required YAML entry and canonical website/source links.
Register an authorized Indian business seller and list only real eligible your tool services with accurate catalogue details.
Search for and claim your real podcast, then keep its RSS-supplied website and episode metadata accurate.
Submit your real podcast RSS feed whose show website and episode notes naturally reference relevant tools.
Publish your useful editor extension whose marketplace metadata links to its homepage and documentation.
Submit a genuinely open-source, maintained and self-hostable your tool component as an alternative to a named proprietary tool.
Build your tool triggers/actions, submit them to the public registry by GitHub PR, and address review feedback.
Submit your genuine podcast RSS feed or Apple Podcasts URL with accurate show-website and episode metadata.
Submit your real public podcast RSS feed whose metadata and episode notes reference the official site naturally.
Propose your qualifying open-source privacy project through the official contribution process.
Submit your tool MCP repository or public server URL, preferably after publishing it to the official MCP Registry.
First pass PWA checks, then submit the installable HTTPS app with manifest, service worker, offline behavior, icons, and screenshots.
Create a founder expert profile and submit substantive talks about privacy-first tools, accessibility or web security.
Publish a maintained Terraform provider for your tool stable API, or a genuinely reusable deployment module, with signed releases, generated documentation, examples, tests, and semantic versions.
Build your redaction, accessibility, image, or privacy add-on and submit its public listing.
Submit only your tool features that genuinely use AI, after checking for an existing listing and preparing accurate pricing and use cases.
Create 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.
Submit and verify one genuine your tool podcast feed for distribution on Amazon Music and Audible.
Publish a stable, documented your tool API and apply as a provider with examples, uptime, support, and honest pricing.
Add or claim your real podcast in Creator Studio and complete channel, site and episode metadata.
Ship your real CLI or desktop utility as a tested package with homepage, project and support metadata.
Apply 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.
Build and verify your Discord app, then enable Discovery in the Developer Portal.
Publish your maintained CLI or server image with source, documentation, descriptions and canonical homepage links.
Build an Elastic package that ingests legitimate your tool logs, metrics, or traces and supplies mappings, pipelines, dashboards, documentation, sample data, and automated tests.
Build your useful privacy-preserving extension, submit a signed build, and provide honest homepage, permissions and privacy disclosures.
Apply with a signed, downloadable open-source or qualifying freeware build that needs reliable binary hosting, malware scanning, and a public project page.
Build your real documentation/privacy integration, publish it as public, test it, then submit for GitBook review.
Publish your useful package to a supported registry with accurate source and homepage metadata so Open Source Insights can index it.
Build and maintain a genuinely useful Home Assistant integration for your mature service, including the required Python client library, tests, documentation, and a focused Core pull request.
Join the partner platform and create your secure service with genuinely useful triggers, queries, and actions, pass endpoint tests and review, then publish helpful Applets for real user workflows.
Publish your clean benchmark or open dataset plus a reproducible notebook, with proper licensing and the canonical project URL in the data card.
Submit your maintained desktop or CLI utility only after it runs natively on a modern Linux distribution and has a public OSI-approved license and repository.
Upload your original audio explainer and place relevant resource links naturally in the show description.
Create a useful quickstart for monitoring your real deployment, with instrumentation instructions, a working data source, dashboards, alerts, documentation, and a GitHub contribution.
Create your genuine collective, complete its public profile, and add the official website plus repository/social links.
Run Scorecard on your public component, enable published results, remediate checks, and link the public viewer from repository documentation.
Post only a self-contained initial announcement of a substantial open-source defensive tool, a major update, or a properly coordinated OSS vulnerability disclosure.
Four steps that work for a new site, a SaaS or a side project. No paid link packages, nothing that risks a penalty.
Before submitting anywhere, have a one-line description, a 150-word description, a square logo and two or three screenshots ready. Every form asks for some mix of these.
Start with the free, quick rows: profile creation sites and free directories. They are one form each and build the entity signals search engines use to understand who you are.
Then pick a handful of high DA and dofollow sites that fit your niche, and write proper guest posts or launch posts for them. Ten relevant links beat a hundred random ones.
Note where you submitted and when. Recheck after a month, update stale descriptions, and never pay for bulk link packages: they put the whole site at risk.
Behind the list
Every row here starts as a line in a sheet, gets normalised into one of 16 groups, scored for cost, effort and impact, and written up with the steps to actually submit. The floor below represents that pipeline.
Open the sheet viewAn illustration of the AltF Backlinks floor: opportunities sourced at the back, vetted for cost and effort by the engineering pod, written up for outreach by the design pod, then tracked to placement along a line.
One-shot launches where timing and preparation decide the outcome.
Publications that accept contributed articles. Slow and editorial, but the links are earned.
Fast-growing listings specifically for AI-powered tools.
Extension, plugin and integration stores. Real review processes, real distribution.
Startup listings, beta lists and founder media.
General tool and software catalogues with real search traffic.
B2B review sites. Slow to approve, strong once live.
Package, image and docs hosting that carries real authority.
Showcases judged on craft. A good screenshot matters more than copy.
Write once, link back. Editorial standards vary widely.
Get quoted or distribute a release. Slower, higher ceiling.
Company and local listings. Unglamorous, consistently indexed.
Owned pages you control: company, founder, knowledge-panel entities.
Answer real questions. Never drop a bare link.
Brand surface and referral traffic more than link equity.
Everything that does not fit the buckets above.