ExplorerPatcher is a free, open-source application that has surpassed 42 million total downloads and received 32,200 stars on GitHub. It allows users to customize their Windows 11 experience by restoring features from older Windows versions, such as reverting the taskbar to its Windows 10 counterpart. The app is compatible with both x86-64 Windows and Windows on ARM. It offers a simple settings menu for adjusting the Taskbar, File Explorer, Start menu, and System Tray, as well as advanced features like improved multi-display taskbar support and a customizable Win+X menu. Users can save and share custom configurations, and there are preset options like the "Classic Windows 10" preset. Despite its popularity, ExplorerPatcher faces challenges such as being flagged by Windows' security systems and potential disruptions after major Windows updates.