TextMate — The Missing Editor for Mac OS X
TextMate brings Apple's approach to operating systems into the world of text editors. By bridging UNIX underpinnings and GUI, TextMate cherry-picks the best of both worlds to the benefit of expert scripters and novice users alike. Whether you are a programmer or a designer, the production of code and markup is hard work. Without an editor dedicated to the task, it is also often cumbersome, overwhelming, and repetitive. Especially when you are dealing with a lot of files at once — like most projects do. TextMate puts you back in control, reduces the mental overhead, and turns manual work into something the computer does.