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

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