UML Pad is a CASE tool for UML
It supports Use Case, Class, Sequence, State and Activity diagrams.
It allows printing and exporting of the diagram image.
For Class diagrams it's also possible to export the documentation in html format.
The project has been realized with support of the wxWidgets class library.
Current version is 3.2. Now with Use Case diagrams.
umlpad.zip (Win32 version for Windows).
Previous version (3.0): umlpad_3.0.zip
Source code available under GPL (umlpad_src.tar.gz).