How to install ONLYOFFICE Desktop Editors for Linux to your computer using Flatpak?

First, you will need to install Flatpak itself - to do that, go to https://flatpak.org/ and install the software choosing your distribution and following the instruction.

For example, to install Flatpak on Ubuntu 18.10 (Cosmic Cuttlefish) or Ubuntu 19.04 (Disco Dingo), simply run:

$ sudo apt install flatpak

With older Ubuntu versions, the official Flatpak PPA is the recommended way to install Flatpak. To install it, run the following in the terminal:

$ sudo add-apt-repository ppa:alexlarsson/flatpak  
$ sudo apt update  
$ sudo apt install flatpak

Flatpak plugin for the Software app makes it possible to install apps without the command line. To install it, run:

 $ sudo apt install gnome-software-plugin-flatpak

Flathub is the best place to get Flatpak apps. To enable it, run:

$ flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo 

Once you have installed Flatpak, restart your system.

After the restart follow the command to install ONLYOFFICE Desktop Editors:

flatpak install flathub org.onlyoffice.desktopeditors

Alternatively:

1. Go to Flathub at https://flathub.org/apps/details/org.onlyoffice.desktopeditors
2. Install ONLYOFFICE Desktop Editors using the Install button (when offered, open the file with Software Install (by default) and follow further instructions)

Launch ONLYOFFICE Desktop Editors right upon installation or later - by pressing Show Applications - ONLYOFFICE Desktop Editors

To remove ONLYOFFICE Desktop Editors from your machine use the following command:

flatpak remove org.onlyoffice.desktopeditors

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