virtualbox

Windows | Mac | Linux
Perhaps it's not as reliable as its commercial competition, but VirtualBox is still a great way to play with an operating system, like Windows, even when you're running a different OS, like Mac OS X, or a different version of Windows.

DOWNLOAD : VIRTUALBOX

dropbox

Windows | Mac | Linux | Web | Mobile
Dropbox provides the brain-dead simplicity to backup/sync we all crave. Put all your files in the Dropbox folder, and all files are synced to the Web and all other computers with the same account, plus they can be accessed on almost all mobile devices.

DOWNLOAD : DROPBOX