RoundPic : Online tool for making anti-aliased rounded corners (very Web 2.0!) for avatars and images
Tracery : A story-grammar generation library for javascript. Write grammar objects, get generative stories.
Color Wizard : The Color Wizard is a color matching application for anyone who wants to create designs with great looking colors.
WebPagetest : Run a free website speed test from multiple locations around the globe using real browsers (IE and Chrome) and at real consumer connection speeds. You...
StyleDocco : StyleDocco generates documentation and style guide documents from your stylesheets.
A fast static site generator in a single binary with everything built-in.