Shows a list of all the registered post types in your install of WordPress.
Yeoman WordPress Plugin Generator
wpTextResizeControls is an easy to use template tag to generate Increase, Decrease, reset font size controls for body text on a WordPress site.
Little Grid - A super tiny, easy to use, responsive grid!
This WordPress plugin sniffs users agents, and provides a set of theme options for a user to put browser-specific CSS styles. It's very easy to use, very simple, and very powerful.