BUI - A box based basic UI system for Unity3D
BUI allows you to easily add various UI elements to your game with only a few lines of code. Add any amount of working buttons to your UI boxes. Buttons and boxes come in 4 standard types - Messages, Warnings, Errors, and successes - and an infinite amount of custom made boxes and buttons that you can design yourself!
Not only can you modify the look of your boxes, but because of BUI's easy to use and open API you can add custom funcionlity too!