VirtualBox is an open source cross-platform virtualization application for enterprise as well as home user. It can be installed on any operating system as an application and enabled you to run multiple operating systems simultaneously, each operating system knows as Guest OS. VirtualBox supports a large number of guest operating systems:

1. Windows 3.x
2. Windows NT 4.0
3. Windows 2000
4. Windows XP
5. Windows Server 2003
6. Windows Vista
7. Windows 7
8. DOS
9. Linux (2.4, 2.6, 3.0, 3.1)
10. Solaris
11. OpenSolaris
12. OpenBSD

In the last 2-3 months VirtualBox is being actively developed with frequent releases like VirtualBox 4.1.10, VirtualBox 4.1.12 and finally latest release is VirtualBox 4.1.14.

To install latest VirtualBox 4.1.14 on Windows, RHEL, CentOS, Fedora, Ubuntu and Linux Mint, then visit my earliest articles where i showed how to install VirtualBox 4.1.10 (i.e. Currently 4.1.14).

1. Install VirtualBox 4.1.10 On RHEL/CentOS, Fedora, Ubuntu and Linux Mint
2. Install Virtualbox 4.1.10 in Windows