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Snikket vs Synapse: catalog facts
Snikket	Synapse
Free Free to self-host.	Free Free under the AGPL; Element sells commercial licenses, support subscriptions and ESS Pro.
Android, Self-hosted	Self-hosted
Invitation-only instances you control No phone number or address book upload	Reference Matrix homeserver maintained by Element Works with any Matrix client
Someone has to run and maintain the server Suited to small groups rather than large organisations	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
Account 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 September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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