Processing is an open source programming language and environment for people who want to program images, animation, and interactions. It is an open project initiated by Ben Fry and Casey Reas. It can be downloaded from 
All sketches shared on OpenProcessing are licensed under Creative Commons Attribution-Share Alike 3.0.
All source code provided is licensed under
Creative
Commons GNU General Public License.

There are many classes and workshops around the world that teach Processing, and OpenProcessing.org is a host to many of these, by allowing professors and students to collaborate on the web, and share with the world how they study Processing.
See the list of classes that use OpenProcessing.
Now with more time on my hands, I will be making new improvements to the site, and I will try to bring some income to support the continued maintenance of the site. Read more at the blog...