It’s like search bar from start menu, but much better. It can search for any app from the default start menu directory and desktop, but you can also add other directories to it. It can also search files and have great extensions. With Playnite’s extension, you can directly launch your game without opening Playnite at all. Obsidian extension for opening a note, etc. There are also built-in features like calculator, measurement converter, even sleep and shut down.