The replacement for twitter is the fediverse. It has already been growing by leaps and bounds since Elon's takeover.<p><pre><code> https://the-federation.info/
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People will say "mastodon" a lot and they're not wrong, but the relationship is that mastodon has proven itself the breakout killer app of the fediverse. Click around a bit and you'll find other types of instances like Pleroma, PeerTube, etc.<p>Basically it's a set of open standards (in particular ActivityPub) developed to do a decentralized version of what twitter and similar social apps do. And no lock-in to a commercial platform or app or protocol.