Best defragging software?

That's why I'm sticking with the one included with Windows, but I will visit the site for MyDefrag and check it out. If I like the looks of it, I'll first install it on XP Pro to test it. Thanks for mentioning the program, Nibiru. Before I deploy new software on 7, I test drive it on XP/Win 2K first, to see how good it really is. But I'm not going to pay for a defrag tool. There's many to be had for free.

IOBit Smart Defrag is brilliant, it's what I always use, as it's quick, reliable and can turn off your computer once it's done. Also, if you ahve IOBit GameBooster you can defrag individual peograms.