Allocate CPU power to the currently active application automatically and improve performance.
Delete junk files and free up your hard disk space.
Generate comprehensive profiles, audits, and diagnostic reports.
Edit Registry, put links to Registry keys on desktop, and open folders with registry values.
Shutdown your PC when you want.
Check out this app switcher for XP and Vista that mimics Mac OS X Expose.
Explore the Windows Registry as if it were a normal folder.
Enable or disable programs starting along with your system.
Manage, maintain, fix, and protect your system.
Optimize and defrag hard drives.
Find, preview and restore permanently deleted files.