UltimateDefrag (Freeware Edition) is a Free Portable Defragmenter that "allows you to optimize your hard drive any way you want". This free defrag tool enables a user to not only defrag files on a disk, but also put frequently accessed files in areas on your hard drive where they will achieve maximum performance.
Defraggler Portable is a free file defragmentation tool that can be used to defragment only the files you want to or defrag an entire drive. It can be used for defragmenting both internal and external drives including USB flash drives.
Power Defragmenter is a graphical defragmenting tool that works in conjunction with Contig by Sysinternals. Contig is a powerful command line portable defragmentation application developed for Windows NT/2000/XP operating systems.
PageDefrag is a free portable defragmenter that allows you to defragment files that you might otherwise be unable to defragment with typical defragmenting tools. Files such as registry, paging, event log and hibernation files or those that are open for exclusive access are just a few examples of what this
WinContig is a simple free defrag tool that can be used to quickly defragment files without defragmenting the entire disk. This tool can even defrag ISO files.
Auslogics Disk Defrag is a free and portable disk defragmenting tool designed for fast optimization of modern hard disks. File fragmentation has been known to cause slow startups and shutdowns, slow performance and even crashes.
HDiskDefrag is a tiny portable defragmenter. A tool that can be used to quickly and easily defragment the files on hard drives, disks, and partitions to help keep things working efficiently.
JKDefrag is a very simple easy to use portable defragmenter tool that can be used to defragment your local hard disks, floppy disks and even portable USB flash drives or external hard drives. JKDefrag can basically defragment anything that looks like a hard drive to Windows.
