"plain matrix" sounds a bit wrong - we put great effort into maintaining numerous of components of the playbook, including bridges, so it has a lot to offer. Alternatively, you can just get a managed server on https://etke.cc
Disclaimer: I'm Aine of etke.cc, and MDAD is our project
I'm sorry, bad choice of words. I didn't mean to imply that it's worse in any way. I use it myself. Uncustomized? Vanilla? Upstream? IIRC Beeper has patched various things.