Appnr

UML2 tool box to specify and generate code

BOUML is a Unified Modeling Language editor for Qt. You can use it to
create nearly all of UML diagrams. BOUML can generate code from
those diagrams in C++, Java and IDL, and can also reverse existing
code.

The program supports class diagrams, sequence diagrams, collaboration
diagrams, object diagrams, use case diagrams, component diagrams,
state diagrams, activity diagrams, component diagrams and deployment
diagrams.