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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.
Create your real Airflow provider with hooks/operators and documentation metadata, publish it, then add it to Airflow’s Ecosystem page by PR.
List product under software categories.
Build an original interactive demo of your utility, document the use case in Pen Details, and add your tool as one of the public profile links.
Publish a small open demo that explains one your tool algorithm or UI pattern and add the product website to the founder profile links.
Publish a functional Eclipse plugin for your developer use case, then create a complete marketplace listing with official support and source links.
Create org/repo README linking your tool; submit to relevant awesome lists.
Publish an original dashboard using public your tool benchmark or ecosystem data and add an appropriate project permalink in workbook details.
Register your concrete ongoing initiative with measurable milestones, dates, resources, SDG targets, partners and website evidence.
Build a production Webex integration or bot for deliberate sharing of your tool checklists or sanitized files, then submit its branded App Hub profile.
Build a tool that genuinely interacts with Wikimedia, publish accurate toolinfo.json metadata, and register it through Toolhub UI, crawler, or API.
Submit your tool widgets plugin after /embed is live.
Build your redaction, accessibility, image, or privacy add-on and submit its public listing.
Submit and verify one genuine your tool podcast feed for distribution on Amazon Music and Audible.
Build an OAuth Asana component that launches your audit or attaches a generated report, then submit complete company and support details.
Claim and verify your tool’s legitimate business entity or location and keep name, address, phone, and website consistent.
Build a Canva app that sends chosen design assets to your accessibility, metadata, or privacy check and returns useful results inside Canva.
Submit a useful R package with URL and BugReports metadata pointing to its official project and documentation pages.
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.
Create a functional Drupal integration or reusable module and publish a maintained project page with documentation and official links.
Build your useful privacy-preserving extension, submit a signed build, and provide honest homepage, permissions and privacy disclosures.
Create a public digital-privacy magazine, curate reputable third-party resources, and occasionally add strong your tool guides with commentary.
Create a comprehensive tutorial around a reusable privacy, file-processing, accessibility, or security technique, with your tool only as a natural example.
Tag and publish a public Go module with module docs and repository metadata so pkg.go.dev indexes it.
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.
Build an Intercom app for intentional conversation privacy scanning or sanitized export generation and include your clear install or learn-more URL.
Build and host a useful Jotform widget, register it with full documentation and send it for approval.
Publish your clean benchmark or open dataset plus a reproducible notebook, with proper licensing and the canonical project URL in the data card.
Publish an original, human-verified privacy or accessibility benchmark with complete methodology, provenance, schema, license, and a relevant project citation.
Upload your original audio explainer and place relevant resource links naturally in the show description.
Build and test a Netlify extension, publish it publicly, then submit it for review and directory listing.
Create a useful quickstart for monitoring your real deployment, with instrumentation instructions, a working data source, dashboards, alerts, documentation, and a GitHub contribution.
Publish @your tool/embed or utility package with homepage.
Publish a free mini-course on privacy, redaction, scam detection, or accessibility with genuine your tool exercises in the curriculum.
Submit your desktop or mobile app through their developer contact so it gets a download page.
Build 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.
Host or claim your genuine show, verify the RSS email, and publish accurate episode notes with relevant HTTPS resources.
Build a polished Unity editor utility or SDK for your relevant service and submit it with demos, documentation and support details.
Build your Vercel integration, distribute its page, gain adoption, then apply for Marketplace visibility.
Create tutorials for top your tool tools with links.
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.