Developers have released the latest stable version of Q, an open-source program that emulates operating systems including Windows, Linux and more. Though still in alpha, the program now includes features such as fast-switching between multiple Guest PCs, more pre-installed operating systems, and the ability to start live CDs in three mouse clicks. Several more changes involve the interface, most notably a "Mac-like" interface for configuring the software firewall. A fullscreen toolbar has been implemented, as has a new icon set. Q is downloaded as a 9.5MB Universal Binary.