CCleaner is a system optimization, privacy and cleaning 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. Additionally it contains a fully featured registry cleaner. But the best part is that it\'s fast (normally taking less than a second to run) and contains NO Spyware or Adware! Key FeaturesCCleaner ProfessionalCleaning for different users: Clean files from all of the user accounts on a computer. This is located in the Options > Users area of CCleaner Professional.Driver Updater: This allows you to quickly and easily update out-of-date hardware drivers on your PC. This helps to improve your computer\'s speed and stability and to prevent errors and crashes. Driver Updater appears in the CCleaner app\'s left-side navigation menu next to Custom Clean and other tools.Software Updater: This tells you what programs on your computer need to be updated, allowing you to install the update easily. It is located in the Tools > Software Updater area of CCleaner Professional.Smart Cleaning: This lets you configure CCleaner Professional to check and or automatically clean your web browser and operating system files.Scheduled cleaning: This lets you schedule CCleaner to clean your computer automatically at specific times. You can find it in the Options > Scheduling area of CCleaner Professional. Defraggler Professional - It has several additional disk optimization features to ensure that your drives are operating at their maximum efficiency, and it does more than Microsoft\'s own disk defragmentation utility. Recuva Professional - It lets you recover deleted files from your computer or external storage devices, such as SD cards, flash drives, and external hard drives. With Recuva Professional, you can also create, mount, scan, and recover files from VHD (Virtual Hard Disk) images to protect against data overwriting.Speccy Professional - provides in-depth information about your computer and all of its hardware, all from a simple, intuitive interface.You can even review detailed graphs that show important information about your system\'s critical components in real-time. Here are some examples:The operating temperatures of your processor and motherboardThe health of your hard driveHow your computer memory is allocatedIn summary, it gives you instant information about any modern Windows-based PC.If you\'re a technical user, Speccy Professional also gives you the benefit of scriptable XML and TXT export support, using the /xmlexport and /txtexport parameters.