itsfatduck/optimizerduck

optimizerDuck is a free, open source tool for Windows computers that focuses on improving performance and privacy without requiring the user to dig through the Windows Registry, Group Policy editor, or PowerShell scripts by hand. A fresh Windows installation runs a lot of background services, telemetry collection, pre-installed apps, and scheduled tasks that keep using CPU, memory, disk, and network even if a person never touches them, while several settings that could make the system faster or smoother are left off by default. This tool brings those controls into one place. The program is a desktop application built in C#. A user downloads it from the GitHub Releases page and runs the executable directly, with no installation step required. Inside the app, a person can browse more than 30 individual tweaks organized into six categories, each with a plain description of what it does and a risk rating so the effect of a change is clear before it gets applied. After picking the optimizations they want, the user applies them and restarts their PC. The README recommends creating a Windows system restore point first, in case a change needs to be undone. Beyond applying one-time tweaks, the app includes built-in management tools that let a user see what is currently running on their system, remove things they do not need, and restore earlier changes if something does not work as expected. The project is actively maintained, with automated build checks running through GitHub Actions, and it only supports 64-bit Windows 10 and newer. It has been translated into more than a dozen languages by community contributors, including Vietnamese, Chinese, Russian, French, German, Korean, Spanish, Japanese, Polish, Portuguese, and Turkish, alongside the primary English documentation. It is licensed under the GPL v3 license and has an active Discord community for support and discussion.