Xen's no killer app
Some folks think that Xen virtualization is going to be the next open-source killer application.
How do I put this gently... No. No, it's not.
Older, commercial VM (virtual machine) programs like VMWare support multiple operating systems like Windows, Linux, and Solaris. Xen, however, which just reached version 3.0, only fully supports the Linux 2.4 and 2.6 kernels.
Xen will soon be offering support for FreeBSD and NetBSD, but if you want to run Windows and Linux today on the same PC, you're better off with VMWare or Win4Lin.
So, as I look ahead at 2006, I have no trouble at all seeing Xen being an important application. But, a killer application? No, that's just not in the cards.