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Continuwuity vs Synapse: catalog facts
Continuwuity	Synapse
Free Free and open source, funded by donations.	Free Free under the AGPL; Element sells commercial licenses, support subscriptions and ESS Pro.
Self-hosted	Self-hosted
Lightweight server suited to modest hardware Federates with the wider Matrix network	Reference Matrix homeserver maintained by Element Works with any Matrix client
Requires running and maintaining your own server Smaller project than the reference Matrix homeserver	Running a homeserver takes server administration work No support from Element without a paid subscription
Self-hosted	Self-hosted
Open source	Open source
License not stated	License: AGPL-3.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.