CCleaner is a utility software developed by Piriform that is designed to optimize and clean up your computer. It is available for Windows, macOS, and Android platforms. CCleaner helps you remove unnecessary files, free up disk space, and improve system performance.

Here are some key features and functionalities of CCleaner:

1. Cleaning Tools: CCleaner can scan your computer and remove temporary files, cache, cookies, browsing history, and other unnecessary files generated by various applications and web browsers. This helps free up disk space and can potentially improve system performance.

2. Registry Cleaner: CCleaner includes a registry cleaning feature that scans for and fixes issues in the Windows registry. The registry is a database that stores settings and configurations for software and system components. Cleaning the registry can help resolve registry errors and optimize system stability.

3. Software Uninstaller: CCleaner provides a tool for uninstalling applications from your computer. It allows you to view a list of installed programs and easily remove unwanted software. The uninstaller can also help you manage startup programs and disable unnecessary items that may impact system startup time.

4. Startup Manager: CCleaner offers a startup manager that allows you to control which programs launch automatically when you start your computer. By disabling unnecessary startup items, you can improve the boot time and overall system performance.

5. File Shredder: CCleaner includes a file shredder feature that securely deletes files and ensures they cannot be recovered. This is useful when you want to permanently remove sensitive or confidential data from your computer.

6. Privacy Protection: CCleaner includes options to protect your privacy by clearing browsing history, cookies, and saved form data. It helps maintain your online privacy and reduces the risk of personal information being accessed by unauthorized individuals.

It’s important to note that while CCleaner provides useful features for system optimization and cleaning, it’s advisable to use such tools with caution. Before making any changes or deleting files, ensure that you understand the consequences and review the items to be cleaned or modified.

Furthermore, it’s always a good practice to maintain regular backups of important files and create a system restore point before using utility software like CCleaner. This allows you to restore your system to a previous state if any unexpected issues occur.