In the bustle of announcements surrounding OSCON, Blackhat, and the Ajax Experience one single, incredibly important, announcement was made: The introduction of two new Mozilla projects: IronMonkey and ScreamingMonkey.The critical, core, component of this is the Tamarin virtual machine (which is an Open Sourced version of the ActionScript Virtual Machine that powered the Adobe Flash Player). Tamarin already supports ECMAScript 3 (and, thusly, JavaScript, ActionScript, and JScript) and parts of the upcoming ECMAScript 4 specification.