http://benji3up2kxewkqfcq7buxk2xd6zwy3zggnurkrm3l4cvwy2iipvyyad.onion/blog/matrix-is-almost-everything-ive-ever-wanted/original.html
You can use any client you want, but I recommend Element . There is a comprehensive list of homeservers here . Or host your own. You just need a reliable server–a Raspberry Pi will do nicely–and the ability to port forward to the Internet.