Optimize Your Windows for Free: 16 CCleaner Alternatives for Peak Performance

Optimize Your Windows for Free: 16 CCleaner Alternatives for Peak Performance
Photo by Dell / Unsplash

Why do you need to clean and optimize your windows?

Regularly cleaning and optimizing your Windows operating system is a crucial practice for maintaining peak performance. Not only does it free up valuable storage space by eliminating unnecessary files and data, but it also enhances system stability and speeds up your computer.

Over time, temporary files, outdated registry entries, and unneeded software can clog up your system, leading to sluggish performance and unexpected crashes. By diligently cleaning and optimizing your Windows environment, you ensure that your computer operates smoothly and efficiently, ultimately providing a more enjoyable and productive user experience.

CCleaner, Why yes and Why not?

Regarded as a widely favored tool for system optimization, privacy protection, and comprehensive cleaning, CCleaner is a pioneering creation from the house of Piriform Ltd.

This potent tool is adept at identifying and eliminating redundant files from your system, thereby allowing your Windows to deliver an accelerated performance and simultaneously liberating substantial hard disk space. As an added boon, CCleaner impeccably cleans traces of your digital footprints such as browsing history, thereby offering a comprehensive registry cleaning service.

CCleaner identifies and eliminates redundant files from your system, allowing your Windows to deliver enhanced performance and simultaneously freeing substantial hard disk space. It also cleans traces of your digital footprints such as browsing history, offering a comprehensive registry cleaning service.


  • It's user-friendly and easy to use.
  • It can free up valuable disk space by removing unnecessary files.
  • It features a registry cleaner to remove unused entries and correct issues.
  • It can erase your browsing history and cookies, enhancing privacy.
  • It allows you to manage startup programs.


  • The free version lacks some of the advanced features available in the paid version.
  • There can be a risk of removing useful registry entries, if not used carefully.
  • Some users have reported aggressive advertising in the free version.

Open-source Windows Cleaner Apps

An open-source, free CCleaner alternative can be beneficial for many reasons:

  • Full transparency: Open-source software allows users to inspect, modify, and enhance the source code, leading to increased transparency and control over the program.
  • Community development: Open-source programs often have an active community of developers and users who can contribute to improvements and troubleshoot issues.
  • Cost-effective: Free alternatives can provide similar functionalities without the need for a financial investment.
  • Avoidance of aggressive advertising: Some users have reported aggressive advertising with the free version of CCleaner, which can be avoided with open-source alternatives.
  • Access to premium features: Some open-source alternatives may offer features that are only available in the paid versions of CCleaner.

In the following list, you will find our best picks.

1. BleachBit

BleachBit is a free system cleaner app, similar to CCleaner but with more focused features and deep scan. It enables you to scan, and find all temporary files for apps such as Google Chrome, Internet Explorer and Windows system files. By then, you can choose also which file to delete or delete all.

It is an ideal solution to free your disk space, reduce backup size, remove temporary files, and improve your system performance.

BleachBit also works for Linux system, and it supports multiple languages by default.

BleachBit Key Features

  • Delete your private files
  • Simple workflow
  • Free of charge
  • No adware, spyware, malware, backdoors,
  • Shred files
  • Command-line interface
  • Advanced: Write your own cleaners and custom cleaning workflow
  • Portable for Windows system: works directly without the need to install
Clean Your System and Free Disk Space | BleachBit

2. WRN Cleaner

WRN Cleaner is a powerful, reliable, and foolproof maintenance tool for Windows machines, offering both manual and automatic cleanup options. It uses pre-configured optimization techniques for a smooth, automated experience, aiming to revolutionize Windows machine maintenance.

However, it is a command-line tool that we recommend only for Advanced Windows users.

WRN Cleaner Features

  • Defragment (HDD)
  • Retrim (SSD)
  • DiskClean
  • Windows Error Log Cleaner
  • Recycle Bin Cleaner
  • Clean Temp Folder
  • Clean Prefetch Folder
  • System File Checker
  • Auto Shutdown and Reboot When Done
GitHub - warengonzaga/wrn-cleaner: A free maintenance tool that can automatically or manually clean up your Windows machine in a simple and reliable way. 😉💻🧹
A free maintenance tool that can automatically or manually clean up your Windows machine in a simple and reliable way. 😉💻🧹 - warengonzaga/wrn-cleaner
29 Free Windows Cleaner Apps to Keep Your System Clean, Fast and Optimized
Why do you need to clean your windows system? Cleaning your Windows system is crucial for maintaining optimal performance and speed. Over time, your system accumulates unnecessary files such as temporary files, cache files, and log files. These files take up valuable disk space and can slow down your computer.

3. WinClean

WinClean is a comprehensive, user-friendly, and absolutely free application that is designed to cater to both average users and system administrators. Its primary function is to transform Windows into a secure, reliable, and high-performing operating system.

This is achieved through a series of optimizations and tweaks that are carried out with just a few simple clicks. This level of convenience and efficiency ensures that users can enhance their system's performance without needing extensive technical knowledge or spending a significant amount of time on manual adjustments.

GitHub - 5cover/WinClean: Windows optimization and debloating utility.
Windows optimization and debloating utility. Contribute to 5cover/WinClean development by creating an account on GitHub.

4. CleanWindowsPro

The Windows clean-up app enables you to optimizes system performance by clearing space and changing the DNS server.

However, it is not a substitute for full-featured software as it lacks advanced capabilities. The tool is designed to clean junk files, repair corrupted system files, and improve efficiency.

CleanWindows Pro Features

  • Clean up temporary files and folders on your system to free up space and improve performance.
  • Can be used to change the DNS server on your system to improve your browsing experience.
  • Provides a streamlined and straightforward approach to optimize your system.
  • Can be used as a supplementary tool to clean up your Windows environment.
GitHub - karthik558/CleanWindowsPro: Optimize Windows system performance and stability with this script designed to clean junk files and repair corrupted system files. Achieve better efficiency with ease.
Optimize Windows system performance and stability with this script designed to clean junk files and repair corrupted system files. Achieve better efficiency with ease. - karthik558/CleanWindowsPro

5. Little System Cleaner

Little System Cleaner is an all-in-one, comprehensive system cleaner designed specifically for Windows computers. This software is a robust package that combines multiple tools, all of which are developed by Little Apps, into a single, user-friendly interface. These tools include a registry cleaner, registry optimizer, disk cleaner, privacy cleaner, duplicate finder, startup manager, and uninstall manager.

Each tool has been designed with a distinct purpose in mind. The registry cleaner and optimizer are designed to ensure that your PC's registry is free from obsolete entries and errors, thereby ensuring smooth system performance.

The disk cleaner function helps in freeing up disk space by eliminating unnecessary files, while the privacy cleaner aids in protecting your personal information. The duplicate finder, on the other hand, helps to eliminate duplicate files, freeing up additional disk space.

The startup manager allows you to control which programs and services launch at startup to improve boot times and overall system responsiveness, and the uninstall manager helps you effectively remove unwanted programs.

When all these tools are used in conjunction, they provide several benefits. Firstly, they help in speeding up your system. With the elimination of unnecessary files and services, your computer can focus its resources on the tasks that matter.

Secondly, these tools help in freeing up disk space. By removing redundant and unwanted files and programs, you can reclaim valuable disk space for other uses. In sum, Little System Cleaner is a comprehensive tool that allows you to make your Windows PC perform better and faster.

Little System Cleaner Features

  • Comprehensive All-in-One Design: Little System Cleaner combines multiple tools into a single interface, simplifying system cleaning tasks.
  • Registry Cleaner and Optimizer: These tools ensure a smooth system performance by eliminating obsolete entries and errors in your PC's registry.
  • Disk Cleaner: Helps in freeing up disk space by eliminating unnecessary files.
  • Privacy Cleaner: Protects your personal information, enhancing your system's security.
  • Duplicate Finder: Finds and eliminates duplicate files to free up additional disk space.
  • Startup Manager: Controls which programs and services launch at startup, improving boot times and system responsiveness.
  • Uninstall Manager: Effectively removes unwanted programs, reducing clutter on your computer.
  • Faster System Speed: By eliminating unnecessary files and services, your computer's performance can be significantly improved.
  • Disk Space Reclamation: Redundant and unwanted files and programs are removed to reclaim valuable disk space.
  • Enhanced Privacy Protection: Protects your personal information, contributing to a safer computing environment.
Little System Cleaner
Download Little System Cleaner for free. Little System Cleaner is an all in one system cleaner. Little System Cleaner is an all in one system cleaner for Windows computers. Little System Cleaner combines several tools created by Little Apps into one, these tools include a registry cleaner, registry optimizer, disk cleaner, privacy cleaner, duplicate finder, startup manager and uninstall manager.

6. Temp_Cleaner GUI

Temp_Cleaner GUI is a powerful, complimentary tool designed for Windows. Its purpose? To efficiently eradicate any unwanted, space-consuming clutter on your disk. What's more, it's open-source!

This tool relentlessly purges old and superfluous files, inclusive of browser history, cookies, and cache. It boasts a sleek, single-window interface, granting you the power to selectively clean up temporary files. Moreover, it meticulously inspects those oft-overlooked directories during your PC clean-up.

Temp_Cleaner GUI Features

  • Free and open-source!
  • Easy to use and designed with your comfortability in mind.
  • Has a beautifully designed UI that's clean from complications
  • Unlimited Customizations Supported!
  • Everything there is completely well organized, of course, because we care about your precious time.
  • It safely cleans up Temp, unlike others, they can cause problems with software.
  • Runs in native 64-bit Mode!
  • Easy to compile, and uses Cross-platform APIs
  • Supports older versions of Windows
  • Provides you with the minimal accessibility needs (Powered by Minimal Accessibility Pack v1.0 by Insertx2k Dev (Mr.X))
  • Support for the Arabic Language, and can be expanded later to be a multilanguagal program
  • Supports Dark and Light modes.
  • Completely stable and safe for everyday use.
  • Offers cleaning presets.
  • Offers an Updater program (Introduced in v5.6-stable)
Temp_Cleaner GUI
Download Temp_Cleaner GUI for free. A free and open-source program to free up disk space. While most of us tend to ignore them, the truth is that browser history, cookies and cache take quite a lot of space on the disk. Deleting them does not only help you gain storage space, but it can also speed up the PC.

7. Sadeaner

Sadeaner isn't merely a tool, it's the definitive solution for a cleaner, faster PC. It doesn't merely promise, it guarantees a host of formidable functions. Bid farewell to unnecessary files and folders as Sadeaner emancipates your precious disk space. Prepare for a significant surge in your system's overall performance.

For gamers, it isn't merely an excellent choice, it's a revolution, liberating resources and skyrocketing game performance. But we don't merely stop there. Sadeaner also offers unparalleled features like a registry cleaner, startup manager, and browser cleaner, ensuring your system operates not just smoothly, but at its ultimate efficiency.

Sadener Key Features

  • Speed up your system
  • Cleaning Temp Files
  • Cleaning all unnecessary Files
  • It should delete the folders so that it is nicer and smoother to use
  • The design of the optimizer should be beautiful and good to look at
  • Only folders and files that are safe and do not destroy the operating system should be used
GitHub - Jisll/Sadeaner: Sadeaner is a good tool for cleaning up the PC. It offers many useful functions such as removing unnecessary files and folders, freeing up disk space. It is the best choice for gamers.
Sadeaner is a good tool for cleaning up the PC. It offers many useful functions such as removing unnecessary files and folders, freeing up disk space. It is the best choice for gamers. - Jisll/Sade…
Download Sadeaner for free. Sadeaner is a good tool for cleaning up the PC. Sadeaner is a powerful and efficient tool for cleaning your PC. It offers a wide range of useful functions, such as the ability to remove unnecessary files and folders, free up valuable disk space, and improve the overall performance of your system.

8. Bulk Crap Uninstaller

Bulk Crap Uninstaller (or BCUninstaller) is a powerful, free program uninstaller. It excels at removing large amounts of applications with minimal user input, ensuring a clean and efficient uninstallation process. It can effortlessly clean up leftovers, detect orphaned applications, and run uninstallers according to premade lists, among other excellent functionalities. Designed with IT professionals in mind, BCU maintains an intuitive, user-friendly interface that anyone can navigate with ease.

BCU boasts full compatibility with Windows Store Apps, Steam, Windows Features, and provides special support for numerous uninstalling systems, including NSIS, InnoSetup, Msiexec, and many others. For a comprehensive list of functions, please see below.

GitHub - Klocman/Bulk-Crap-Uninstaller: Remove large amounts of unwanted applications quickly.
Remove large amounts of unwanted applications quickly. - Klocman/Bulk-Crap-Uninstaller

9. Performance Maintainer

Performance Maintainer is an automated tool that combines open-source software like Little Registry Cleaner, Bleachbit, and Ultradefrag for regular PC maintenance and performance enhancement.

It cleans the registry, performs disk cleanup, and defragments the system drive. Users can install additional tools for tweaking and improving performance. The program can be scheduled to run as needed and requires .NET Framework 3.5 sp1.


  • Disk/registry Cleanup, service optimization and disk defragmentation in one click
  • Maintenance > Optimize Services
  • Maintenance > Clear Registry Problems
  • Scheduled maintenance to maintain system speed
  • Additional Tools > Registry > Clean, Defrag and Edit Windows Registry
  • Additional Tools > Disk Space > Clean Junk files, permanently erase files, recover deleted files and inspect disk space.
  • Additional Tools > Disk Performance > Check Disk and Defragment Drive
  • Additional Tools > Program and Processes > Manage Startup applications, running processes and windows services
Performance Maintainer
Download Performance Maintainer for free. cleans registry, cleanup disk, defrag drive. Performance Maintainer has combined open source tools such as Little Registry Cleaner, Bleachbit and Ultradefrag that run periodically for PC maintenance and performance. It is very simple and automated 1.Little Registry Cleaner Scan and Cleans the registry, 2.Bleachbit Performs Disk Cleanup 3.

10. Windows Cleaner Utility

The Windows Cleaner Utility is a batch script that cleans temporary files from your PC. It can free up significant space, especially for long-time Windows users who have not regularly cleaned their system. The tool also features a system file checker.

It is tested on Windows 10, 8.1, 8, 7, Vista and XP (64 & 32 bit).


  • System File Checker
  • Removal of Temporary Files
  • Deletion of Log Files
  • Clearing of Event Logs
  • Removal of Old Files
  • Deletion of Trace Files
  • Erasure of Browsing History
  • Cookie Deletion
  • Removal of Redundant Driver Files (already installed ones)
  • Resetting of DNS Resolver Cache
GitHub - Chainski/WindowsCleanerUtility: A windows batch script that cleans your PC from temporary files.
A windows batch script that cleans your PC from temporary files. - Chainski/WindowsCleanerUtility
Windows Cleaner Utility
Download Windows Cleaner Utility for free. A windows batch script that cleans your PC from temporary files. A Windows batch script that cleans your PC from temporary files. If you’ve been a Windows user for a long time without cleaning it up, or you don’t know how to clean it, you will be amazed of how much space this tool can free for you!

11. Little Registry Cleaner

Little Registry Cleaner is a robust open-source program designed for Microsoft's Windows Registry. It expertly removes obsolete or unwanted items, significantly enhancing your computer's stability and performance.


  • Enhances computer stability and performance
  • Creates automatic registry backups using Windows and an internal database
  • Offers translations in 17 languages
  • Portable Edition for usage on the go
  • Includes an uninstall manager for removal of deleted software
  • Manages startup files
  • Compatible with 64-bit Windows versions

11. Cleaner PRO

Cleaner PRO is a free, user-friendly utility for Windows, offering features such as RAM and hard drive cleaning, automatic cleaning every hour, and loading with Windows.

Cleaner PRO
Download Cleaner PRO for free. Simple Windows cleanup utility. Cleaner PRO is a universal utility for cleaning Windows.

12. Pc-Cleaner

Pc-Cleaner is a free open-source command-line system cleaner app that comes with a set of useful features that include:

  • Clean up temp windows files
  • Clean up temp app files
  • Remove 100% hardware usage
  • Remove windows defender and hidden system monitoring
  • Remove windows store
  • Clean up chrome cookie files
  • Remove windows updates
  • Enable seconds in clock
  • Fix for accessing administrative rules
  • Get information about the system
  • System file checker
  • Registry Checker

However, it is important to note, it is an advanced tool and we recommend it fo advanced users only.

GitHub - W1lliam1337/pc-cleaner: Computer optimization
Computer optimization. Contribute to W1lliam1337/pc-cleaner development by creating an account on GitHub.

13. Windows Memory Cleaner

With its native Windows features, this free RAM cleaner masterfully clears memory areas. It's the perfect solution when programs fail to release allocated memory, causing your computer to lag. Utilize Windows Memory Cleaner to optimize memory, ensuring a seamless work experience without the need to waste time rebooting your system.

Sporting a minimalist interface and intuitive features, the app's portability means there's no installation required. However, it does demand administrator privileges to operate. Simply click on the download button below and run the executable to take the first step towards a more efficient system.

GitHub - IgorMundstein/WinMemoryCleaner: This free RAM cleaner uses native Windows features to optimize memory areas. It’s a compact, portable, and smart application.
This free RAM cleaner uses native Windows features to optimize memory areas. It’s a compact, portable, and smart application. - IgorMundstein/WinMemoryCleaner

14. XTR Toolbox

XTR Toolbox is a free unbeatable, portable, swift, and streamlined tool designed specifically for tweaking, cleaning, and optimizing Windows. Leveraging cutting-edge technologies, it remains ad-free and bloat-free, supports the latest versions of Windows, and offers a remarkably user-friendly interface.


  • Batch Startup Manager
  • Batch Services Manager
  • Batch Software Manager
  • Hosts File Editor / Manager
  • Rebuild Icon Cache
  • Rebuild Font Cache
  • Reset Event Logs
  • Remove / Reinstall Windows Apps
  • Junk Files Cleaner
  • User and Windows Temporary Directories Cleaning
  • Windows Installer Cache Cleaning
  • Windows Update Cache Cleaning
  • Windows Logs Directory Cleaning
  • Prefetch Cache Cleaning
  • Crash Dump Directory Cleaning
  • Google Chrome Cache Cleaning
  • Steam Redistributable Packages Cleaning
  • Chrome Extensions Manager
  • Automatic Dark / Light mode

15. Cleanmgr+

Microsoft is confidently transitioning from the Disk Clean-up Tool (Cleanmgr.exe) on Windows 10 PCs to the more efficient Storage Sense functionality.

In response to this, a developer created this a ground-breaking tool, Cleanmgr+, has been innovatively developed to bypass the extensive user interface of Storage Sense, while preserving the essential functions of the original utility. Cleanmgr+ is armed with a more contemporary UI and enhanced features, including the ability to execute custom scripts for tasks like browser cache cleaning.

Note, Cleanmgr+ is a free app and it is not an open-source software.

GitHub - builtbybel/CleanmgrPlus: 🐾 A Improved Replacement for Microsoft Disk Cleanup
🐾 A Improved Replacement for Microsoft Disk Cleanup - builtbybel/CleanmgrPlus

16. Little Disk Cleaner

Little Disk Cleaner is a highly efficient open-source program meticulously coded in C#, designed with the purpose of eliminating any unnecessary files that may be occupying valuable space on your hard drive.

Through its robust mechanism, it successfully frees up extra hard drive space, thus optimizing your computer's performance. In addition to this, it also enhances the speed at which your Windows operating system runs, by eliminating clutter and making system processes run more smoothly and effectively.

The app is released under the GNU General Public License version 3.0 (GPLv3).

However, the app did not get any update for years, but it is usable as it gets weekly downloads and endorsements form his loyal user-base over the years.

Little Disk Cleaner
Download Little Disk Cleaner for free. Free up valuable disk space. Little Disk Cleaner is a open source program written in C# that removes any unneeded files to free up extra hard drive space and make windows run faster.

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