'Ultra Defrag', and 'Team Drive'

Ultra Defrag

UltraDefrag is powerful Open Source defragmentation tool for Windows NT. Its engine is very fast, because it is created as a kernel-mode driver. Design of the UltraDefrag is very ergonomic: no skins, no localization, no animation and so on. It's truly a small and powerful program! It can be used on Windows 2000, Windows XP, Windows Server 2003,Windows Vista and all of the 64-bit editions of Windows.

http://ultradefrag.sourceforge.net/

Team Drive

TeamDrive creates a virtual drive for data exchange and collaboration among teams and individuals using the Internet. Anyone with access to an FTP or WebDAV server (e.g. available with GMX, free-of-charge) can use the Basic version of TeamDrive free-of-charge for an unlimited time. The software application guarantees a high degree of security, and was awarded the Data Protection Seal of Approval by the Independent Center for Privacy Protection Schleswig-Holstein Germany (ULD).

http://www.teamdrive.net/en/produkte3.php/