In the fairly recent past, the only direction the emerging Web platform could take was largely determined by the often acrimonious competition between Netscape and Microsoft via their respective browsers. Today, with hot mobile devices like the iPhone using Webkit, the popularity of Firefox, an IE7 that’s gaining adoption, and the constant demand for cool Web apps, the Web Platform is once again heating up. Once again, it’s about the ingredients that constitute a Web application, and who’s putting them in their browsers for us developers to build stuff on. Proprietary technology again competes against open standards. This panel will ask the hot questions to the browser titans - Firefox, Microsoft, Apple, and Opera. What’s with HTML5? And Silverlight and other proprietary stuff? And who’s building what feature into JavaScript? And what about the mobile web? Last year we had a spirited discussion about the future of the Web. A year later, can we revisit the same debates, and still throw in a good punch or two, and perhaps even agree on some sort of common vision? Brendan invented JavaScript and is CTO of Mozilla; Chris worked on every version of IE that you’ve used; Charles is the public face of standards at Opera. And Arun’s going to try and keep them all civil.