MyDefragGUI
Windows freeware defragmentation and optimization - MyDefragGUI and the legacy JkDefragGUI. MyDefrag is a free defragmentation program for all Windows systems starting...
UltraDefrag is an open source disk defragmenter for Windows. It can quickly defragment everything including files which are usually locked by Windows. For instance, UltraDefrag can re-join paging and hibernation files.
ultradefrag is powerful and fast defragmentation tool for windows. there are three interfaces to them: graphical, console and native. the gui is useful, because it represents your filesystem visually as a colorcoded cluster map. the console is another option for those that prefer the command line. it allows you to run ultradefrag from the task scheduler and scripts. finally, the native executable will run at boot time in a manner similar to chkdsk. the design of ultradefrag is very simple. there are no skins and other unnecessary stuff. it is a small and powerful program!
Productivity Utilities System and Hardware
portable