Prepros - Compile Less, Sass, Scss, Stylus, Jade, Coffeescript, Haml and Markdown with live browser refresh.
SlideLizard - Powerpoint plug-in for live audience interaction
Scout-App - Process Sass files into CSS without any knowledge of the command line.
Pingo - Optimize images for the web quickly 🖼️⚡
CodeKit - CodeKit allows you to optimize the performance of your website by automatically and efficiently compiling a variety of popular languages.
Imakiku - Imakiku is an audience response system for real-time voting, posting comments, and surveying.