UML Modeller
Umbrello UML Modeller is a Unified Modelling Language (UML) diagram program
based on KDE Technology.

UML allows you to create diagrams of software and other systems in a standard
format to document or design the structure of your programs.

Maintainer: KDE porting team <openbsd-kde@googlegroups.com>

WWW: https://umbrello.kde.org/
