It provides transparency to work on DSL as well as UML models.

It allows you to create all of the UML diagrams. The UML designer tool helps in modifying and envisioning UML2.5 models.

It imports C++ and can export up to a wider range of languages.

It implements both structural and behavioral diagrams.

It supports both reverse engineering and code generation for C++ and Java. Umbrello is a Unified Modeling language tool, which is based on KDE technology.

It offers multiplatform support (MacOS, Windows, and Linux).

It let you create Object, Use case, Deployment, Sequence, Collaboration, Activity, and Profile diagrams.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. Currently I use copy&paste to PlantUML Server and has neither PlantUML nor GraphViz installed on my computer.Since UML is a Unified Modeling Language, it is used to create meaningful, object-oriented models for a software application.All my 'class diagrams' are test cases of my unit testing tool. The real problem is more about my work flow. m2uml asks for a GUI, but I cannot envision the details.I define the associations in a PlantUML script, which I give as input to m2uml. The dependencies between classes are an important part of a class diagram.I gave up on both retrieving information from the code of classdef files and adding PlantUML code fragments to Matlab comments.m2uml reads information from the Matlab meta.class object.And more important it does not handle associations automatiaclly. However, m2uml does neither handle multiple superclasses nor mixins. m2uml handles inheritance and packages well enough. The boxes are complete with properties, methods and visibility indicators.

m2uml automatically creates PlantUML code for 'partial' Class Diagrams.I have a little tool, m2uml, which I use on a regular basis.

Open source uml editors