Linux on the desktop is making great progress. However, the real beauty of Linux and Unix like operating system lies beneath the surface at the command prompt. nixCraft picks his best open source terminal applications of 2012.
Samba is a free software re-implementation of the SMB/CIFS networking protocol. Samba version 4 has been released. It is a major rewrite that enables Samba to be an Active Directory domain controller. I have been waiting years for this option.