EggOn

EggOn is a Firefox extension for cooking the perfect egg. EggOn has three settings, so you can cook perfect eggs according to your tastes. Yes, EggOn is essentially an egg timer for your web browser.

There are some known issues with EggOn 0.1.1 including an ideological bias of some team members the soft egg setting is too hard, the timer does not currently calibrate to higher elevations, user definable times are not yet supported, and documentation is sparse (start the timer when the eggs are placed in boiling water, not before).