Colyseus

Colyseus is a server-oriented multiplayer framework with rooms, schemas, and a central authority. HyperToken's peer mode instead synchronizes Automerge state through a relay and can continue offline; its authoritative server mode covers some of the same room/dispatch use cases.

The trade-off is important: Colyseus gives a clear server boundary for ordering and validation, while HyperToken gives CRDT merges, forkable worlds, and replay of document state. Select based on trust and latency requirements. HyperToken is not a replacement for Colyseus or its production room infrastructure.