Umbrello UML Modeller is a Unified Modelling Language diagram editor for KDE.
It can create diagrams of software and other systems in the industry-standard
UML format, and can also generate code from UML diagrams in a variety of
For versions of Ubuntu between 14.04 LTS (Trusty Tahr) and 15.10 (Wily Werewolf), as well as Ubuntu flavours that don’t include snap by default, snap can be installed from the Ubuntu Software Centre by searching for snapd.
Alternatively, snapd can be installed from the command line:
sudo apt update
sudo apt install snapd
Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.
To install Umbrello, simply use the following command: