>Teams IRC is my personal favorite, but I'd look at XMPP or Matrix if you need something a bit more fancy. I use all three a bit outside of work. >Office I d

>Teams IRC is my personal favorite, but I'd look at XMPP or Matrix if you need something a bit more fancy. I use all three a bit outside of work. >Office I don't use office software much. I prefer to deal with plaintext when possible and use vim or emacs. I usually have LibreOffice installed if I need to do something especially office-y, but I'm not sure I can properly defend/recommend it when I don't actually know it that well. I think IRC, email, and git all still work pretty well. I think NextCloud has some sort of office stuff that could be worth looking into as well. I will add that Teams and some of these other popular proprietary programs have a LOT of features, and you probably won't get full feature parity elsewhere, but I also believe a lot of these features just aren't really needed. I like to think of things in more general terms, like "chat program", not "Teams alternative" or "Teams clone". I don't expect all similar software to have the same featureset. At work I've had to use Webex, Zoom, and Teams depending on who I'm working with. Some places have bans on certain software of this type. On that note, I was initially thinking of text chats in Teams as that's 99% of what I do with it at work, but if you do need the voice/video aspects, then I'd probably recommend Jitsi or maybe Mumble.