Proggy Programming Fonts: "Monospaced Bitmap Programming Fonts
Looking for the perfect programming font ?
This site is the home of the Proggy programmer's fonts (Proggy Clean, Proggy Square, Proggy Small, and Proggy Tiny) as well as a number of contributed programming fonts (Crisp, Speedy, CodingFontTobi1, and Opti). It is also the home of two other proportional bitmap fonts for use on web pages (Webby Caps and Webby Small).
Every font you will find here was created by a programmer and is free.
The proggy fonts are a set of fixed-width screen fonts that are designed for code listings."