linux wine

ActiveTcl: Tcl distribution for Windows, Mac OS X, Linux - ActiveState.

ActivePerl: Perl distribution for Windows, Mac OS X, Linux - ActiveState.

Free Active Directory Integration and single sign-on for Linux and Mac OS X

Mobile/PC Multi-protocol Messenger & Media Sharing-Win- Mac-Linux-iPhone-Android

Assist developers in migrating applications from UNIX/Linux to the MS Windows.

White Box Finance is a Personal Finance app for Windows and Linux.

Rubymon is a simple process monitor for UNIX/Linux.

Gets the local IP of a linux machine.

vsftpd is a GPL licensed FTP server for UNIX systems, including Linux.

PyPar2 is a graphical frontend for the Linux par2 utility.