May I ask what open source products you view as "magic"? Linux is great, but I guess I don't view an OS that has been in development for 20 years and is still

May I ask what open source products you view as "magic"? Linux is great, but I guess I don't view an OS that has been in development for 20 years and is still mainly constrained to server apps as "magic". And there's very few other open source projects that are used vanilla without some dedicated team sanding down all the rough edges (Unix -> Mac OS, Webkit -> Safari/Chrome, etc)