UMLet project is an open-source Java tool for rapidly drawing UML diagrams with a pop-up-free, light-weight user interface.
UMLet lets you draw diagram sketches fast; export diagrams to eps, pdf, jpg, svg, and sys.
Add elements to a diagram with a double click. Edit elements using the lower-right text panel. Select multiple elements using Ctrl or lasso. Press 'C' to copy diagram to the system clipboard.
Product's homepage
Here are some key features of "UMLet":
· fast
· text-based sequence diagram
· call from command line.
Requirements:
· Java 2 Standard Edition Runtime Environment
What's New in This Release: [ read full changelog ]
· Improved handling of special characters.
· Config file writes to the home directory.
· The ability to open multiple diagrams.