Aus Logic makes one of the best disk defragmenters I’ve ever seen. Compared to the built in Windows defragger that you have to run about 10 times to finally get a good defrag with Aus Logic I’ve only had to run it a max of 2 times, but once usually does it. It really depends on how defragged your hard drive is. Oh yes, I haven’t mentioned that this is also freeware so it is available to anyone. It also has a very easy interface to use. Click 1 button to analyze and defrag then wait until it is completed. Another perk of this software is that you can check mark a box while it’s defragging for if you want it to shutdown your PC after completing the defragment.
This is also on www.download.com.