Scout-App - Process Sass files into CSS without any knowledge of the command line.
imgix - Real-time Image Processing. Resize, crop, and process images on the fly, simply by changing their URLs.
Prepros - Compile Less, Sass, Scss, Stylus, Jade, Coffeescript, Haml and Markdown with live browser refresh.
Cloudimage - Cloudimage.io is the easiest way to resize, store, and deliver your images to your customers through a rocket fast CDN.
LESS Compiler - LESS Compiler makes formatted CSS styles from less source.
Gumlet - Gumlet is an end-to-end video streaming and image delivery platform