Finder is a file management application and software created by Apple Inc that is included with macOS. It allows users to navigate and manage the contents of their computer. It provides a graphical user interface (GUI) to access and interact with files, folders, and applications. It also offers an array of tools to quickly search and locate files, preview files, and even create folders and organize them. Finder can be used to open and edit documents, launch applications, access network drives and volumes, and much more. It also has a convenient drag and drop feature for quickly moving files to different locations. Finder is highly customizable, allowing users to customize the look and feel, as well as the behavior of the app.
It doesn't replace the Finder, but brings Windows Explorer to your Mac ... = HORRIBLE way to work with files.