Debian, Ubuntu, Mint: the .deb package
One command installs Zen and its menu entry.
Download for Linux x64. For ARM see Other ways.-
Download the package
Click the button above and save Zen-Linux-x64.deb (usually into Downloads).
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Install it
In a terminal in that folder run this, then open Zen from the menu:
sudo apt install ./Zen-Linux-x64.deb
If something goes wrong
Zen cannot keep its key
Zen stores its encryption key in GNOME Keyring or KWallet. Install one of them and log in again.
No videos or voice notes
Install the GStreamer plugins:
sudo apt install gstreamer1.0-plugins-good gstreamer1.0-libavNo tray icon
Install libayatana-appindicator3-1 (GNOME also needs the AppIndicator extension).
Other ways
Download the file and run this. Flatpak does not update itself: when Zen says a new file is out, install it the same way.
flatpak install --user ./Zen-Linux-x64.flatpak
Zen-Linux-x64.flatpak
The ARM .deb installs like the x64 one. The .tar.gz needs no installation: unpack it and run Zen/zen; Zen/install-desktop-entry.sh adds it to the menu.
Updates: the .tar.gz copy updates itself; with the .deb Zen saves the new package to Downloads, so install it like the first one.
Zen is installed. What now?
Add your first friend and learn the basics.
How to use Zen