You can now build an interactive mobile app without thanks to Facebook

“Today we’re thrilled to be releasing Origami, a toolkit for Quartz Composer that allows designers to build and prototype mobile interactions faster than ever,” said Facebooker James Pearce today on the company blog.  Quartz Composer is a free Mac OS X app from Apple. It’s around 10 years old, and it’s mostly intended for motion graphics, not mobile app design. Origami changes all that, allowing you to create interaction flows and animations for mobile user interfaces.

Since Facebook’s first line of PHP, and its first MySQL INSERT statement, open source has been a huge part of our engineering philosophy. Nowadays, we use, maintain, and contribute to a significant number of major projects – in areas as diverse as native mobile tools, big data systems, client-side web libraries, backend runtimes and infrastructure, and, through the Open Compute Project, server and storage hardware.