Experience with YED
A while ago I tried to find an alternative piece of modelling software for projects where M$-Visio is not the project standard and I’m free to choose the modelling software I use. Four years ago I found YED and I’ve never looked back. The latest versions support BPMN Graphs and can be used to model topologic network plans, a variety of UML Diagrams and much more.
It’s worth a try. Check out the Examples.