Sketchpad was built by Ari Bader-Natal as an exercise in learning how to learn new technologies.

Sketchpad builds on a few open-source projects, and wouldn’t have been possible without them. Many talented people contributed to these projects:

• EtherPad
  Created by AppJet and subsequently acquired and open-sourced by Google. Now maintained by the Etherpad Foundation and a network of contributors.


• Processing
  Ben Fry and Casey Reas are the co-founders of Processing and the primary designers of the language and software. The current team of contributors includes: Florian Jenett, Dan Shiffman, Andreas Schlegel, Andres Colubri, Filip Visnjic, George Michael Brower, Jonathan Feinberg, Chris Lonnen, Patrick Hebron, Damien Di Fede. [processing.org]


• Processing.js
  “After its initial release in 2008 by John Resig, the Processing.js project was picked-up by students in the Centre for Development of Open Technology at Seneca College. The student team finished the port of Processing.js, fixing more than 900 bugs, shipping 12 releases, and creating a vibrant developer community around Processing.js in the process. This project was done through a partnership between the Mozilla Foundation and Seneca College, and was led by David Humphrey, Al MacDonald, and Corban Brook. The students continue to maintain the project today.” [processingjs.org]
  

Finally, SketchPad was made possible thanks to one person’s remarkable patience tolerance for my hobby projects. Thanks, Liz!