Speaking of which, I'm working on a «Guix Channel Browser» that I forked from the Guix Packages Website to fix response times by using an independent database.

Currently it only covers the functionality of the forked website. But, as the name implies, the idea is to allow searching for whatever channels may provide.

If you would like to crash it, I published an instance at

guix.deltaedro.org/

which I'll update whenever I add more functionality.