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. Power Defragmenter compliments Contig by providing a GUI " Graphical User Interface" wrapper for simplicity and ease of use. This portable defragmenter requires 616KB of free space for installation.
Authors Website: https://rejzor.wordpress.com/powerdefrag/
License: Freeware for personal use
How to install and use Power Defragmenter: