I like https://umurmur.net/ since it can run totally headless at the cost of some of Murmur's features. Mainline Murmur (the Mumble server) requires QT5 and mDNSResponder and various DB drivers and even D-Bus if you look at it crossways
The D-Bus RPC is considered deprecated in favor of Ice and can be compiled out.
umurmur good. I never did anything fancy with my server but I never noticed anything that umurmur didn't have, meanwhile it used virtually zero resources.