Poseidon for UML 1.4 released. If you haven’t tried this fantastic open source tool, you don’t know what you’re missing. Anyone doing OO design or working on OO projects, or even those just taking an interest would benefit to experiment with the UML tools in this package.

Poseidon is a freely downloadable Java app that provides you with a similar set of tools to Rational Rose, but without the price tag 😉