That's the old project- they have decided not to open source the new one.

The open source project is barely maintained at this point- they update the readme and get the occasionally pull request, but it's not really being developed.

I unfortunately switched to Fathom back when they were telling people they were committed to open source, so now I'm looking to migrate off to something a bit more trustworthy.

You've been saying this since last year. If I can help you migrate off of Fathom Lite to something else, please let me know.

Yeah, I've been busy.

Apparently this repo contains "Fathom Lite", a (from a codebase perspective) unrelated predecessor of what is currently being sold as a SaaS.

And it seems that Fathom Lite misses one of the main selling points of Fathom - cookieless tracking.

Yes - Fathom Lite would need a good refactor to not use cookies.