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. But the best part is that it's fast (normally taking less than a second to run) and contains NO Spyware or Adware!

Features of CCleaner 2.0:
* Complete rebuild in C++
With the requirements for a portable version, 64-bit compatibility and Windows Vista increasing against the limitations of the old architecture. We decided to rebuild the entire CCleaner application in highly optimized C++.
* Faster analyzing and cleaning
Each scanning process was rewritten from scratch and fully optimized. The result being a noticeable speed increase in all areas.
* Portable
CCleaner can now run from a USB thumbdrive and be installed/run on a computer without a complicated setup process.
* Compact
The rewrite removed all external file dependencies, so the main EXE is now half the size of the original program and support files.
* Redesigned User Interface
The original CCleaner user interface was looking a little dated, so the GUI was redesigned with a modern look, but without sacrificing speed or usability. New icons were created for the interface and the main program icon was updated with a more modern style.
* Exclusions
It is now possible to specify files, folders and registry keys to ignore from the cleaning process.
* Loads of little tweaks
Too numerous to mention them all separately, we've tried to improve CCleaner in all areas.

Changes in CCleaner v2.06:
- Added Google Firefox Toolbar history cleaning.
- Winapp.ini is now embedded in the main EXE.
- Added ability to override default embedded INI files with:
winsys1.ini, winreg1.ini and winapp1.ini.
- Updated ability to append to default embedded INI files with:
winsys2.ini, winreg2.ini and winapp2.ini.
- Updated system info code to support Win2k8.
- Improved IE History cleaning with .DAT files.
- Improved accessibility features of treeview control.
- Removal of version history from About screen.
- Options section checkboxes resized to fit caption text.
- GUI tweaks including Piriform logo change.
- Minor performance improvements.