VirtualBox is a family of powerful x86 virtualization products for enterprise as
well as home use. Not only is VirtualBox an extremely feature rich, high
performance product for enterprise customers, it is also the only professional
solution that is freely available as Open Source Software under the terms of the
GNU General Public License (GPL).
VirtualBox is a virtual emulator like VMWare workstation. It has many of the
features VMWare has, as well as some of its own.
Read the full article below:
http://www.ubuntugeek.com/howto-convert-vmware-image-to-virtualbox-image.html
Enjoy!
LW Group