I’m working on a project that needs a similar approach to slack or discord. I know about matrix, but the person I’m working with said to be open to use a fediverse alternate when I tell them I didn’t want to use slack. I mention matrix and the fediverse as an alternative and they asked me a good fediverse option.
It’s needs to be good for team collaboration, easy to set and be able to maintain original images quality.
Are those part of the fediverse? I’ve used matrix in the past, but have no experience with xmpp or irc I don’t want to scare them with something complicate.
No, although XMPP is similarly federated to the fediverse. If by fediverse you mean ActivityPub, then XMPP and IRC are both much older than AP.
They’re from a good while before, and I’m not sure it would be appropriate for your use case.
Matrix is much closer to the Slack / Discord format. It IS a bit more complicated than those two, especially if you’re self hosting it, but it has a lot of similar functionality