OpenVZ is one of the many open source virtualization projects available these days. It is container-based virtualization, which has advantages and disadvantages. Unlike KVM and Xen, OpenVZ cannot run different operating systems as guests, but it offers better performance than hypervisor-based virtual machines or paravirtualization. OpenVZ is specific to Linux (both for the host and the guests) but provides the flexibility to run different Linux distributions in each container. The best thing about OpenVZ? You can do a live migration of a guest container from one server to another superfast and with almost no perceptible delay in the container's network response.
License: GPL
The Bossies 2010 index:
Bossie Awards 2010: The best open source software of the year
Bossie Awards 2010: The best open source applications
Bossie Awards 2010: The best open source application development software
Bossie Awards 2010: The best open source platforms and middleware
Bossie Awards 2010: The best open source networking software
