Mac Tweaks 2.0Free
Mac Tweaks is an application that helps you easily take charge of macOS's internals. Therefore, you can change the visibility of file extensions in Finder, the visibility of hidden files and folders, and the visibility of icons on desktop. In addition, you can enable or disable the window shadows in screenshots, enable text selection in Quick Look, and customize the Finder appearance.
Besides Finder-related quick adjustments, the tool provides tweaks related to system Preferences, Safari and Internet, Dock, and Dark mode.