Open Source C# Uninstallers

Bulk Crap Uninstaller (in short BCUninstaller or BCU) is a free (as in speech and beer) bulk program uninstaller with advanced automation. It excels at removing large amounts of applications with minimal to no user input, while requiring next to no technical knowledge. It can detect most applications and games (even portable or not registered), clean up leftovers, force uninstall, automatically uninstall according to premade lists, and much more. Bulk Crap Uninstaller is licensed under Apache 2.0 open source license, and can be used in both private and commercial settings for free and with no obligations, as long as no conditions of the license are broken.

Sylph Syndicate has launched a registry cleaner and uninstaller for terminal. Less processing. Quicker responses.

Windows 11 Fixer is a community-oriented Windows utility intended to centralize a wide range of customization, cleanup, and configuration tasks for Windows 11 into one user-friendly interface. It gives users a single place to tweak visual components like the taskbar and File Explorer, adjust system settings including privacy and security options, and uninstall unwanted default software that many consider bloatware. In addition to settings adjustments, the tool can automate the removal of applications such as Cortana or Edge, and also offers options to install commonly used third-party applications directly from within its UI. The application emphasizes ease of use, pulling together many tweaks that would otherwise require manual registry edits or piecemeal scripts, and it typically shows reminders when a reboot or process restart is needed for changes to take effect.