Some friends told me to try this free software, and I wanted to know your opinion about it?
http://www.iobit.com/iobitsmartdefrag.html
http://www.puransoftware.com/Puran-Defrag.html
http://www.iobit.com/iobitsmartdefrag.html
http://www.puransoftware.com/Puran-Defrag.html