Linux to Windows to Mac
I noticed that BadBlue is being used on an intranet to share files between Linux, Windows and a Mac. While BadBlue currently only supports Windows, browsers on any platform easily upload and download files from it. So users on Linux can easily transfer files back and forth from Windows... and the same for Mac users. It's way, way, way easier than configuring an FTP server or a Samba share.
BadBlue Personal Edition - Download