CCleaner 4.10 Released, Best Free System Optimization and Cleaning Tool

CCleaner is a free system optimization, privacy and cleaning tool. It removes temporary unused files from your system which helps your computer to run faster and freeing up valuable hard disk space. It also cleans traces of your online activities such as your Internet history. But the best part is that it's fast (normally taking less than a second to run) and contains no spyware or adware.
It cleans following stuff:

• Internet Explorer - Temporary files, history, cookies, Auto-complete form history, index.dat.
• Firefox - Temporary files, history, cookies, download history, form history.
• Google Chrome - Temporary files, history, cookies, download history, form history.
• Opera - Temporary files, history, cookies.
• Safari - Temporary files, history, cookies, form history.
• Windows - Recycle Bin, Recent Documents, Temporary files and Log files.
• Registry Cleaner - Advanced features to remove unused and old registry entries.

Changes in new version:

• Improved Firefox 26 cleaning
• Improved Firefox extension management
• Improved Shutdown after cleaning and /SHUTDOWN command-line
• Added new cleaning scheduler (Professional version only)
• Added Facebook Metro, Picasa 3, Spotify, Wondershare Video Converter Ultimate, Kingsoft Office 2013 and Sublime Text cleaning
• Improved Audicity cleaning
• Improved localization and language support
• Minor GUI improvements and bug fixes

You can download it using following link:
Download Link
Download Link (Mac)