Craving the cool, nostalgic clicks of an old-school typewriter? Noisy Typer, a free OS X download, adds the sound of a typewriter to your laptop keystrokes. Developed as a F.A.T. Lab (Free Art and Technology) speed project by Theo Watson, the app runs in the background of your normal computing tasks.
Not only does it work across all applications — email, web, Word, etc. — but it also includes the full spectrum of typewriter sounds: letter keys, spacebar, backspace, carriage return, scroll up, and scroll down. What do you think?