Umbrello is a Unified Modeling language tool, which is based on KDE technology. It offers multiplatform support (MacOS, Windows, and Linux).
It also supports UML2.0 specified diagrams. It has come up with eleven different types of modeling diagrams. StarUML is an open-source software modeling tool, which is provided by MKLab. There are numerous tools, both commercial and open-source, which are available for designing UML diagrams, are enlisted below: 1. It clearly represents the working of any hardware/ software system. Since UML is a Unified Modeling Language, it is used to create meaningful, object-oriented models for a software application.