CCleaner (Crap Cleaner) is a freeware system optimization and privacy tool. That removes unused and temporary files from your system - allowing Windows to run faster, more efficiently and giving you more hard disk space. The best part is that it’s fast! (normally taking less that a second to run) and Free.

Download: CCleaner 1.32.345 Standard (1,435KB) | Basic (571KB - No Toolbar) | Slim (419KB - English Only, No Toolbar)
View: Version History | CCleaner Homepage
Source: MSFN