Free (released under the GNU General Public License) disk defragment and optimize utility for Windows 2000/2003/XP/Vista/X64. Completely automatic and very easy to use, fast, low overhead, with several optimization strategies, and can handle floppies and USB disks/sticks.

Changelog:

• A final fix for the out-of-sequence problem. Beta tests by users show that the problem is now finally fixed.
• Bugfix for missing parameter in status message that caused JkDefrag to crash when it wanted to display the "Cannot find volume name for mountpoint" message. This message can happen when scanning the system for disks and a special volume is encountered such as a "subst" volume.
• The "25 largest items on disk" list in the statusreport is now sorted by (used) clusters instead of by (allocated) bytes.
• Fixed the progress percentage during analysis of NTFS volumes. It was counting too fast and reached 100% before analysis was complete.
• The "unmovable", "still fragmented", and "largest 25" lists in the report are now suppressed if empty.
• Directories on FAT disks cannot be moved, this is a known limitation of the Microsoft defragmentation API and not a bug in JkDefrag. To speed up things the program will now count the number of failed tries to move directories, and when it reaches 20 will ignore all directories.

Program Information Category: Tools and Utilities Type: Free Version: 3.24 Size: 0.4MB Works on: Windows Product page: here