Signal
Close matchFreeThe closest match if you can persuade people to move. Proper Linux app with working voice and video calls, and end-to-end encryption throughout.
Does WhatsApp run on Linux?
Verdict: Partly
Partly. There is no WhatsApp program for Linux, but WhatsApp Web runs in your browser with all your chats and contacts, and Meta points people without a supported app to it directly.
WhatsApp's download page lists mobile, desktop and tablet apps, and does not offer Linux. What it does say, plainly, is that if you do not see your device supported you should use WhatsApp in your browser.
Go to web.whatsapp.com, scan the square code with the WhatsApp app on your phone, and your chats appear. Messages, photos, voice notes, group chats and file sending all work. You can pin the site to your taskbar so it opens in its own window like a normal app.
What is missing is voice and video calling, which WhatsApp only offers in its installed desktop apps and on phones. If calls matter to you, keep using your phone for those.
Nothing is stored on your computer that needs moving. Your chat history lives on your phone and in your phone's backup, and the browser version simply shows it. Your account, number and groups are untouched.
What to use instead of WhatsApp
Telegram
Close matchFreeFull Linux app, strong group features and easy file sending. Ordinary chats are not end-to-end encrypted by default.
Last checked . Sources: