CCleaner is a freeware system optimization and privacy tool. It removes unused files from your system – allowing Windows to run faster and freeing up valuable hard disk space. It also cleans traces of your online activities such as your Internet history.

Advanced Disk Cleaner – Every day the programs on your computer create temporary and garbage files and leave them behind on your hard disk. These files build up over time, taking up valuable hard disk space and slowing your system down. Advanced Disk Cleaner is a free program which makes it easy to quickly find and wipe away all the garbage files on your computer.

HDCleaner is the easiest and most comprehensive way to keep your PC running smooth and error free. There may be many junk files in your hard disk when your computer is running. They would make the computer system work slowly and astatically. HDCleaner uses a highly intelligent engine to scan your hard disk & improve PC performance!.You needn't know about the system and file types.

DCleaner is a cleaning and maintenance application combined with both system tools from Microsoft Windows and its own built-in system cleaner.

Disk Cleaner was inspired by one of the system tools that can be found in Windows 98. As I was running Windows 95 myself those days, and upgrading my machine to 98 was not an option, I decided to write such a tool myself. However, Windows 98+ users may find that Disk Cleaner is smaller and faster, and one of its virtues is the ability to run quietly, i.e. on startup.

Window Washer – As you work on your computer and browse the Internet, you leave behind traces of your activity. This information not only takes up valuable disk space but also jeopardizes your privacy. Window Washer simply and safely wipes your tracks clean and removes unnecessary files for complete privacy and improved PC performance.