Other UML tools
Tired of using Visio as tool for UML diagrams like I am? How about some other options which are free or open source?
1. (Open source) ArgoUML
I highly recommemd.
2. (Commercial) Poseidon for UML Community Edition
I like it for better GUI as compared to ArgoUML but printing is not available. By the way, it's core is ArgoUML.