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Karere vs Rambox: catalog facts
Karere	Rambox
Free Free and open source under the GPL version 3 or later.	Freemium A free plan is available. Additional features require a paid subscription.
Linux	Windows, macOS, Linux
Several WhatsApp accounts in isolated sessions Native GTK4 window instead of a browser tab	Several accounts of the same service signed in side by side Workspaces and unified notifications across hundreds of services
Unofficial client that depends on WhatsApp Web Requires a WhatsApp account	The open-source community edition is end of life; the current product is closed source Running many web apps in one Electron window uses a lot of memory
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0-or-later	License not stated
Account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 22, 2026

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