PassMark Fragger

One of the fastest defraggers in the world, Disk Defrag often takes less than 10 minutes to defragment an average-size hard drive. Merges scattered pieces of free space into a contiguous block, preventing fragmentation of newly created files. You can see which files are the most fragmented, as well as the location of each fragment on the disk map. Can save you time by defragmenting only the files or folders you want instead of the entire hard drive. You can use the default settings for convenient one-click defrags or customize program operation and appearance to fit your needs. Exclusive Auslogics technology is proven safe and effective in multiple tests, used by PC manufacturers, and recommended by experts. Auslogics software is recognized by leading IT magazines and online resources. Recommended by experts as one of the fastest and most efficient defraggers.

PerfectDisk's OptiWrite technology prevents most fragmentation on your drive before it occurs, which prevents your system from slowing down. OptiWrite detects when Windows is going to fragment files and intelligently redirects I/O to stop the fragmentation from occuring. System performance is maintained and the need to utilize CPU and Disk I/O resources to defragment files is greatly reduced. Because less defragmentation is needed, there is a direct benefit in the form of energy saved in both CPU usage and in the reading and writing to a disk. It saves users both in energy costs and in the time required to defragment a file system. PerfectDisk's Space Management recovers disk space by detecting and removing duplicate files such as text documents, pictures, music, and videos. Recycler purges the Recycle bin and removes temporary files so that your drive remains clutter free. With Space Reports you can view a graphical and statistical report of file usage and allocation.