I haven’t tried running a matrix server, but ejabberd has been very solid, and it’s not too difficult to set up.

Unexpected Keyboard is pretty nice.

My thing is C++ and Z80/45GS02 assembly, and I love a good terminal, so wherever that puts me I guess

Dunno if Emacs Lisp counts as a life hack, but I’ve been slowly learning it, and it’s very nice to be able to setup custom workflows with such a high degree of customization (and a substantial amount of flycheck yelling at me)

Mine’s pretty great at reading a 1400-page manual for an 8-bit system. Whether or not my habit of reading a 1400-page manual for an 8-bit system is actually beneficial is up for debate.

Dunno where CP/M got it from but PIP and REN use DEST.EXT=SRC.EXT, so it at least dates back to then.

Also, CP/M 2.2’s ED is great, it’s my daily driver editor on my RC2014.

I would write functional timing-specific 8-bit assembly.

Vectrex, hands-down.

Eternity. It works, and I like the UI.

Currently hosting XMPP:

• Group chat appears to be much better now
• Server-side caching exists now, at least in ejabberd
• Syncing also exists now, see above

As for encryption and feature support, YMMV, providers.xmpp.net has a list of servers that provide everything.