Two years ago the Google Foundation awarded us a major grant to develop a JavaScript + HTML5 version of our educational physics simulation called Molecular Workbench Because Javascript is fast and the web is ubiquitous, we have extended the work to create a general framework for publishing explorable scientific simulations that run in the browser, From the beginning we've kept a close eye on performance and extensibility. We'll show off our framework and talk about the lessons we've learned regarding this relatively new form of web app. Image: https://secure.gravatar.com/avatar/5810a1b7743eb2186ca0ea1d0a3469a0?s=140&d=https://a248.e.akamai.net/assets.github.com%2Fimages%2Fgravatars%2Fgravatar-user-420.png I agree to release any and all audio and video recording and broadcast rights to JSConf for publication