Compare software

Whatsie vs Altus: catalog facts
Whatsie	Altus
Free Free and open source under the MIT licence.	Free Free and open source under GPL-3.0.
Linux	Windows
Native notifications and tray unread badge Calls, screen sharing and a downloads manager	Multiple WhatsApp accounts in one app Custom themes for the WhatsApp interface
Unofficial client built on WhatsApp Web Linux only	Unofficial client that depends on WhatsApp Web Electron app with higher memory use than a native client
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0
Account needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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