Visio Killer?

No. At least not the current version. But Gliffy offers a real cool way to share and collaborate on diagrams just using your browser. The toolbox isn't as mature as Visio, but what do you expect from a Web 2.0 application. If you need an easy way to sketch a room before your trip to Ikea or mapping out your network to share with others, then you may want to give this a test drive.

gliffy, originally uploaded by _Tommyboy.