10 Virtual tools you should (have at least heard of) know
Baseline Mag has put up an interesting top 10 list of VM tools, that, for a virtual engineer you should know about.
It's always a good idea to know the competing products and some of the third party add-ons\tools that are out there.
Some of the stuff on this list i've never heard off, mainly due to them not being for Windoze I guess :>
http://www.baselinemag.com/c/a/Enterprise-Apps/10-Free-Virtualization-Tools-You-Should-Know/