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iamb vs FluffyChat: catalog facts
iamb	FluffyChat
Free Free and open source under the Apache-2.0 licence.	Free Free and open source.
Command line	Linux, Android, iOS, Web
Vim keybindings throughout End-to-end encryption, threads and spaces	End-to-end encryption with cross-signing and encrypted key backups UnifiedPush support for notifications without Google services
Terminal only, no graphical interface Still pre-1.0 releases	Audio and video calls are still experimental Requires a Matrix account on some homeserver
Downloadable app	Downloadable app, Web application
Open source	Open source
License: Apache-2.0	License not stated
Account needed	Account needed
Needs internet	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.