Software

GlassCalcA lightweight yet flexible calculator for Windows designed for keyboard input. It lets you enter expressions as text, supports user-defined functions and variables, and saves a full history of your calculations.

Opera ExtensionsBrowser extensions for Opera: they make Opera do cool things it didn’t do before.

UserscriptsUser JavaScript files: they also make your browser do new things. Other SoftwareAnything that doesn’t fit in one of the other categories