mockup

Compare and contrast different design artefacts (sketch, wireframe, mockup, and prototype) in terms of their fidelity, speed, cost and use cases.

(via Why It’s Important to Sketch Before You Wireframe – UX Movement ) Where by “Code” you should really read “Prototype”.

Quartz Composer for iOS – Joris Kluivers This project intends to provide a rendering & interaction framework for .qtz on your iPhone or iPad. Similar to what the Quartz Composer framework provides on OS X.