Mattermost is the most obvious option; it's a clone of Slack. IRC is another good option, although I know a lot of people hate it because they prefer features to freedom. I cannot recommend Matrix; the UX is fine but the cryptography has a few issues, as documented by Soatok here.

[–] GiovaMC1@lemy.lol 5 points 5 months ago

Revolt chat. Pretty much an open source discord.

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[–] ssm@lemmy.sdf.org 10 points 5 months ago* (last edited 5 months ago)

It's ironic so many people are cucking to discord, having left reddit for lemmy

[–] ngn@lemy.lol 8 points 5 months ago

thats what I call "perfectly cut"

[–] kionite231@lemmy.ca 5 points 6 months ago (2 children)

I went to discord.com for looking where does it say it. I found nothing. are they really claim this?

[–] Fades@lemmy.world 5 points 6 months ago (2 children)

The joke is that they say they like free and open source software but then point to communicating via software that is not.

It’s a shit joke to be fair, like what, you can’t believe in open source unless you use nothing but open source? Fucking stupid

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[–] ssm@lemmy.sdf.org 4 points 5 months ago

I was devastated when I learned X-Moto dumped their forums in favor of dicksword. You have the infrastructure already set up, why replace it with garbage, especially as an open source project?

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