I haven't found any as well.

In the fluxer roadmap, one of the plans is to include a communtiy discovery:

#5: Community discovery

In addition to #4, I'd like Fluxer to offer both an in-app and a public (no login required) way to discover Fluxer communities that are published to the web, regardless of where they're hosted.

This discovery system would ultimately need some top-level moderation by Fluxer Platform AB. People can, of course, still use regular search engines, but this could further improve content discoverability.

About the Fluxer HQ, it seems that a new error is occurring now: