I built a free tool to find relevant backlink opportunities (not random links)

Hey everyone 👋

I built Retrolien — a free backlink research tool for people doing SEO/link-building outreach.

The problem I kept running into: most backlink tools/directories dump thousands of random links with no way to know if they're relevant to your niche or even still active. You end up wasting hours filtering noise before you can even start outreach.

Retrolien tries to fix that:

- Filter opportunities by niche, country, and link type

- Live-check whether a submission URL is actually reachable before you invest time

- See free/paid status, dofollow attributes, and login requirements upfront

- Export a clean, focused shortlist to PDF or CSV

It also includes a free technical SEO audit (titles, headings, indexability) and Search Console insights.

It's completely free to use: https://retrolien.com

Would love feedback from anyone doing link-building right now — what would make this more useful for your workflow?