OpenJS Grid is a super simple way to show data grids on your php-mysql site. Really it only takes like 5-10 lines of code to show/edit simple and complex database data.
CornerStone is an ultra light weight PHP framework that is more of a PHP MVC Framework for creating frameworks out of. Not yet released, it's used for all of my professional projects.
ConnectAi is my company and team of awesome web developers that love to make cool shit. We focus on html5, css3 and JS and hate IE. Our goal is custom web applications.