Good, free UML modelling tools?

[igowerf]

I need to draw out some diagrams for a website that I'm going to be working on, so I've been Googling around for a good, free UML tool. Any suggestions? I don't believe I have any listed in my freeware thread...

 

[concreteDonkey]

Try Eclipse. Don't know if there's a UML plugin? But I'd imagine there is.

 

[mundane]

I believe ArgoUML might suit your needs.