Sun's VirtualBox hits 5 million downloads

The virtual-machine software, which enables users to run Vista on a Mac, is picking up steam. Perhaps this is when the company realizes its open-source vision.

Dave Rosenberg Co-founder, MuleSource
Dave Rosenberg has more than 15 years of technology and marketing experience that spans from Bell Labs to startup IPOs to open-source and cloud software companies. He is CEO and founder of Nodeable, co-founder of MuleSoft, and managing director for Hardy Way. He is an adviser to DataStax, IT Database, and Puppet Labs.
Dave Rosenberg

I didn't pay much attention to VirtualBox when Sun Microsystems first acquired Innotek, but RedMonk's Michael Coté just posted an interview and demo of the software, and it's very cool.

In a few clicks, you can see VirtualBox create a Vista instance and run it on the Mac. There are many options for virtualization at this point, but I would expect Sun to make this its weapon of choice (versus Xen), since it owns it and can tweak it for Solaris.

On the Mac, I'm not sure it's any better than Parallels, but it is open-source, which should be very appealing for many users.

VirtualBox is a free download available under the General Public License, or GPL.