UtraDefrag is a disk defragmentation tool for Windows platform. Its more stable and fast-loaded after the defragmentation. It reduces the amount of fragmentation. The most unique feature is that it can defrag very fast and it can also defrag single file or multiple directories. After the defragmentation, it generates html reports of the fragmentation status. More additional, its available for portable version. Portable Defrag can be installed on demand which can be carried around in USB storage devices and used without any installation.