FREE Windows Application Virtualization

Cameyo lets you repackage your software into virtual applications. These are self-contained executable (.EXE) files which contain the application's entire eco-system: registry, files and other components. Available for all versions of Microsoft Windows. The Enterprise version is FREE for up to 50 machines. See: http://www.cameyo.com/
Cameyo have also created downloads for over 500 public virtual apps at http://online.cameyo.com/public