This is O20, the Office365 alternative for Linux.
Note: O20 is no longer actively being developed, but a new (although still in heavy development) version of it called KO20 is now being developed in QtQuick. See https://snapcraft.io/ko20 and https://gitlab.com/abstractsoftware/ko20 for more information.
Enable snaps on Red Hat Enterprise Linux and install O20
Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
The packages for RHEL 7, RHEL 8, and RHEL 9 are in each distribution’s respective Extra Packages for Enterprise Linux (EPEL) repository. The instructions for adding this repository diverge slightly between RHEL 7, RHEL 8 and RHEL 9, which is why they’re listed separately below.
The EPEL repository can be added to RHEL 9 with the following command: