HDiskDefrag 1

HDiskDefrag defragments FAT/NTFS partitions on non-removable hard disks. You can specify to clear temporary files and browser cache before defragmentation. You can also select whether to defragment system files and various methods of placement (by name, last access, last write).
Home page is in German, and can be translated through the interface. Program interface is English. Program is portable and does not require installation.