The easiest way to install these third-party versions is through universal package managers:
Arch users can easily find the package in the AUR (Arch User Repository). Using an AUR helper like yay : whatsapp download linux
A popular choice for KDE users, though it works on any desktop environment. It’s available as a Flatpak . The easiest way to install these third-party versions
One of the most popular versions available in the Snap Store. sudo snap install whatsapp-for-linux ZapZap (via Flatpak) whatsapp download linux
Once installed, you can launch it from your application menu just like any other native program.