Matrix. But if you want something that looks and feels exactly like Discord, there is Revolt.
It's FOSS.
https://revolt.chat/
asudox
npub1cx…vhdqu
2025-03-14 13:02:20 UTC
in reply to nevent1q…qeyh
Author Public Key
npub1cx33pxjt0wjt8pjqrt86frk923y44pq7g6s9t7gpjhmtdugegv5qavhdquSeen on
wss://relay.momostr.pinkPublished at
2025-03-14 13:02:20 UTCEvent JSON
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