Open Source System Cleaners for Windows

Erase unnecessary files like cache and cookies, maintain privacy, and optimize disk space on Linux and Windows. Supports various applications and uses.

Czkawka is a simple, fast, written in Rust and easy to use app to remove unnecessary files from your computer.

A modern, professional-grade Windows debloating and privacy hardening tool. Remove bloatware, optimize performance, harden privacy, and reclaim control of your system.

Tron is a collection of programs, tools, utilities, and Windows functions that are all scripted together. Those programs and such are designed to remove malware and bloatware, repair damaged operating systems, update old versions of very common applications, free up drive space...

Mem Reduct is a small application that allows you to monitor and clean your computers memory. Exempt system cache, modified, and idle memory pages.

AME Wizard is an opensource tool for modifying Windows.

Build your own configuration for AME Wizard with Playbooks, a modular extension format containing simple YAML instructions to be applied. Verifying your Playbook allows you to build a trusted userbase. You can also browse t.

SpaceRadar allows interactive visualization of disk space and memory. It currently supports Sunburst, Treemap, and Flamegraph charts.

RED searches and deletes empty directories recursively below a given start folder and shows the result in a well arranged tree. Further you can create some custom rules for keeping and deleting folders. Empty files in directories can also be ignored.

Versatile and portable software designed to clean, tweak and optimize Windows. It's extremely fast and rich with features.

Features

Quick Tools:

Rebuild Icon Cache Rebuild Font Cache Reset Event Logs

Privacy Tools:

Remove / Reinstall Windows Apps Rem.

All-in-one Java-based Windows repair and maintenance toolkit.

Multron Win Cleaner – The Ultimate Free & Open-Source Windows Optimizer Looking for a powerful, no-strings-attached system cleaner? Multron Win Cleaner is a completely free and open-source toolkit for optimizing, cleaning, and boosting your Windows system — without...

Blazing-fast, all-in-one system optimizer. Improve your computer's efficiency with powerful cleaning and tuning tools.

Duplicate Detector is a GUI utility for finding duplicate files, allowing you to delete or link them to save space. Duplicate files are displayed and processed on two synchronized panels for efficient and convenient operation.

The free system maintenance suite your PC deserves. 15+ powerful tools to clean, optimize, and protect your Windows, macOS, and Linux machines. Open source, no ads, no bloatware. Just a faster computer.

Free, open-source Windows disk cleanup tool. Clean system junk, scan large files, detect duplicates, and analyze disk space. Single portable file under 70MB. No ads, no bundleware, no background processes. Built with .NET 8 + WPF. Supports 6 languages and 10+ themes.

dua (-> Disk Usage Analyzer) is a tool to conveniently learn about the usage of disk space of a given directory. It's parallel by default and will max out your SSD, providing relevant information as fast as possible.

This is a toolset for improvement of performance of Windows desktop and server operating systems. Much gratitude goes to Ponderworthy folks and friends for much input, a good bit of which can be read at notes.ponderworthy.com.

CleanUP! is a tiny, super-light tool that helps you get rid of all the junk files cluttering up your Windows PC. It’s really small — only about 100 to 150 KB — so it won’t slow you down or take up much space.

Reclaimed is a cross-platform, ultra-lightweight, and surprisingly powerful command-line tool for analyzing disk usage — with special handling for iCloud storage on macOS.

A collection of Scripts which disable / remove Windows 10 Features and Apps.

BloatyNosy is a lightweight tool for decluttering Windows 11, focusing on essential features for system debloating without unnecessary complexities. It's open-source, user-friendly, and optimized for efficiency, offering a streamlined way to tackle bloatware and enhance system performance.

Windows 10 app manager for removing Modern/UWP apps.

Crap Killer is a CMD script which uses a Heuristic Detection Algorithm to find and automatically uninstall "crapware" (toolbars and 'coupon printers' for example) from all current versions of Windows.

Most desktop apps have a cache directory, not all provide the tools to clear it. CacheMonkey not only lets you purge cache files, but browse and filter through them too.

Tikione Steam Cleaner helps you to find and remove all games's redistribuable packages downloaded by Steam, GOG Galaxy, and EA Origin.