A new beta release of the VMware client for OS X was released today. With it, you can run other operation systems like Linux or Windows in the VMware virtual machine without having to leave OS X.
It provides pretty much the same functionality as Parallels, except you can download the beta for free. Also, this release contains a cool feature they call “Unity”, which allows Windows apps to leave the container window and get friendly with your OS X desktop (video above).
VMware Fusion Beta – Link