Try UltimateDefrag yourself to see why it's the Ultimate defragmentation tool. This 30 day, no-obligation, trial lets you enjoy all the features of UltimateDefrag.
You can purchase UltimateDefrag from the opening screen as soon as you are convinced as to why it deserves its name. Or... if UltimateDefrag is not for you, simply uninstall when your trial period is complete.
The EXE file you will download is 20.6 Mb in size and is guaranteed to be 100% spyware, trojan and virus free. You'll have it downloaded in about 30 seconds.