CCleaner is a freeware 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!

What do we have here:

Cleans the following Windows components:

Internet Explorer

1. Temporary File Cache
2. URL History
3. Cookies
4. Hidden Index.dat files
5. Last download file location

Firefox

1. Temporary File Cache
2. URL History
3. Cookies
4. Download manager

Google Chrome

Opera

Safari

1. Recycle Bin
2. Clipboard
3. Windows Temporary files
4. Windows Log files
5. Recent Documents (on the Start Menu)
6. Run history (on the Start Menu)
7. Windows XP Search Assistant history
8. Windows XP old Prefetch data
9. Windows memory dumps after crashes
10. Chkdsk file fragments

Advanced Options allow cleaning of:

1. Menu Order cache
2. Tray Notifications Cache
3. Window Size and Location Cache
4. User Assist history
5. IIS Log Files
6. Custom Folders

Application Cleaning:

As well as cleaning up old files and settings left by standard Windows components, CCleaner also cleans temporary files and recent file lists for many applications. Including:

Firefox, Opera, Safari, Media Player, eMule, Kazaa, Google Toolbar, Netscape, Microsoft Office, Nero, Adobe Acrobat Reader, WinRAR, WinAce, WinZip and more…

Registry Cleaning:

CCleaner uses an advanced Registry Cleaner to check for problems and inconsistencies. It can check the following:

1. File Extensions
2. ActiveX Controls
3. ClassIDs
4. ProgIDs
5. Uninstallers
6. Shared DLLs
7. Fonts
8. Help File references
9. Application Paths
10. Icons
11. Invalid Shortcuts and more…

How to use it

1. After Installation

Once you have installed CCleaner you can open the application by:

Double-clicking the desktop icon
Clicking on Start -> Programs -> CCleaner
Right-clicking on the Recycle Bin and selecting “Open CCleaner…”

There is also a “Run CCleaner” option on the Recycle Bin menu, which will clean your system without any prompts. But we recommend you don’t do this until you have familiarized yourself with the program and its options.

2. Main Window

CCleaner has four main sections which can be selected using the 4 icons in the left-hand navigation panel.
(The Cleaner section is selected by default.)

Cleaner
This is the main feature of the program, which will allow you to optimize your system, by removing unused and temporary files. It also protects your personal privacy by removing traces of the websites you have visited and the files you have opened.
(It’s important to point out that it does this without removing any files you’ll still need!)

Registry
This is a more advanced feature which analyses your computers registry (where windows system settings are stored) and fixes any problems and inconsistencies that exist.

Tools
This section allows you to manage installed programs and applications that run when you turn on your computer.

Options
The Options section handles a wide array of preferences for how CCleaner runs.

3. Cleaner Settings

The Cleaner Settings are the list of checkboxes next to the navigation buttons and are present when you are in the Cleaner mode.

By checking and unchecking options you can choose to include or exclude items from the cleaning process. For example, if you uncheck the Cookies option then no Internet Explorer cookies will be removed. (You also have the choice to keep specific cookies in the Options section.)

You will notice a second tab at the top labelled Applications. This displays a list of additional cleaning options for third-party applications you have installed. This list will change automatically to include new programs.

4. Running the Cleaner

To actually run the cleaner and remove the files, it’s a simple case of just clicking the Run Cleaner button.

If you’d like to see what is going to be removed first (before deleting the files) then click on the Analyze button.

The output window above the buttons will display a log of the analysis or cleaning process.

5. Issues

The Issues section will help you find errors and old entries in the system registry. Whilst this will make sense to an advanced user, to the beginner a lot of the options will mean nothing. That is why CCleaner includes a complete backup option, so in the rare event you remove something that you later need – you will have a backup to restore from.

To use, simply press the “Scan for Issues” button and once completed press the “Fix Selected Issues” button. You will be prompted to backup and helped throughout the process.

6. Tools

The Tools section contains two features for advanced users:

Uninstall
Whilst windows includes a Control Panel program to remove installed programs. There’s no feature to edit or remove these entries.

Startup
Most computers have many programs that run when Windows starts. It’s often very difficult to remove these and prevent that from happening. This tool list the programs and allows you to remove them.

7. Options

The Options section will allow you to customize the way CCleaner runs.

For example there’s an option to run the cleaner at computer startup, so you can automatically keep your computer clean without having to worry about it.

now, you still got problems with cleaning system or finding hard on this kinda softwares?  i bet you don’t. or you go further with the links we offered below:

official website: http://www.ccleaner.com/

official download

May 26.09 / freeware, system utility