I\'m working on comparison for several different methods of implementing (real or fake) multithreading in JavaScript. As far as I know only webworkers and Google Gears Worke
q: how else can you achieve concurrency in Javascript
You can use async or 'non-blocking' type methods. This has one of the major buzzes about the node.js system.
It's not exactly multithreaded, but it does tend to be faster.