CCleaner is the best program for optimisation tool, with this program you can removes all unused and also temporary files from your system – allowing it to run faster, more efficiently and giving you more HDD space.

whats new? :

CCleaner v2.15New
- Added command-line secure deletion.
e.g. ccleaner.exe /delete “folder\*.*|MyFile.txt”
- Added Google Chrome thumbnail cleaning.
- Moved language files to /lang folder.
- Improved options cookie list browser detection.
- Fixed minor bug in XP prefetch cleaning.
- Fixed bug in IE History Index.dat cleaning.
- Fixed two minor compatibility bugs with Win98.
- Installer engine updates.
- Minor architecture improvements.