BOUML is a UML 2 tool box that allows you to
specify and generate code in C++, Java, IDL, and
PHP. BOUML is very fast and doesn't require much
memory to manage several thousands of classes.
BOUML is extensible, and the external tools (named
plug-outs) can be written in C++ or Java, using
BOUML for their definition as any other program.
UML models can be exported to HTML pages,
including PNG or SVG graphics.