Keeping your computer running smoothly is a must for most users, but with so many free PC cleaner software programs on the market, it can be hard to know which one is right for you. We’ve done the research and rounded up the best free PC cleaner software available in 2021.


CCleaner is probably the most well-known name in the world of PC cleaners and with good reason. It has been around since 2004 and is regularly updated to keep up with changes in the Windows registry and other areas of the operating system. CCleaner focuses on removing temporary files, cookies, and other junk that accumulates over time. It also includes tools for cleaning the registry, uninstalling programs, and even recovering lost files. A Pro version is available with additional features such as automatic updating and real-time monitoring.


AVG PC TuneUp is another popular choice among PC users when it comes to cleaning and optimizing their systems. It includes several useful tools that allow you to clean up your system, defragment your hard drives, and repair any problems with your registry. Additionally, AVG PC TuneUp can help you optimize your startup and shutdown times, as well as help you manage installed programs and services. It also includes a disk space explorer so you can quickly see which files are taking up the most space.

Glary Utilities

Glary Utilities is an all-in-one package for cleaning, optimizing, and maintaining your PC. It offers a wide range of features including registry maintenance, disk cleanup, startup manager, Internet Explorer management, and much more. Glary Utilities also includes a 1-click maintenance feature that can automatically scan and fix any issues with your system. Plus, it allows you to schedule regular scans and updates so you never have to worry about keeping your computer in top shape.

IObit Advanced SystemCare

IObit Advanced SystemCare is yet another comprehensive suite of tools for optimizing and maintaining your PC. As the name implies, the program includes advanced features that go beyond simply cleaning and defragging your system. It can optimize your system performance by removing unnecessary files and repairing registry errors. Additionally, it includes anti-malware protection, privacy protection, and a startup manager so you can easily control what programs and services start up with Windows.

Auslogics Disk Defrag

If you only need a basic defragmentation tool then Auslogics Disk Defrag is a great choice. It’s a simple program that does exactly what it says – defragmenting your hard drive to make sure data is stored in the most efficient way possible. The program can also analyze your disk for any errors or bad sectors, as well as monitor the health of your hard drive. Best of all, it’s completely free and easy to use.


BleachBit is a lightweight but powerful open source tool for cleaning up your Windows PC. It includes several useful features such as a secure file shredder, disk wiper, browser cache cleaner, and system cleaner. With BleachBit, you can quickly remove temporary files, delete old logs, clear out unused data, and more. It also includes a scheduler so you can automate your cleaning tasks.

PC Decrapifier

PC Decrapifier is an easy-to-use program designed to help you remove unwanted preinstalled software from new PCs. It can detect and uninstall trial software, toolbars, browser extensions, and other bloatware that can slow down your system. PC Decrapifier is a great choice if you want to quickly get rid of any unwanted software without having to manually search for it.


JetClean is a free all-in-one system optimization and cleaning suite for Windows. It’s designed to help you free up disk space, repair registry problems, improve system performance, and more. JetClean includes several useful features such as a registry cleaner, junk file remover, system optimizer, startup manager, and memory booster. It can also be used to securely erase sensitive data and protect your online privacy.

There are a lot of great free PC cleaner software programs available, so it’s important to choose one that fits your needs. Each program offers different levels of protection, optimization, and convenience, so take some time to evaluate them before deciding. With the right PC cleaner, you can keep your computer running smoothly and safely.


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