CCleaner (Crap Cleaner) is a freeware system optimisation tool. That removes unused and temporary files from your system - allowing it 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 1.29.295 Standard (1,442KB) | Basic (558KB - No Toolbar) | Slim (416KB - English Only, No Toolbar)
View: Changelog | Screenshots
Source: MSFN