Microsoft officially retired JScript years ago, along with proper support for the original Internet Explorer browser. However ...

In hopes of propelling Firefox into the lead, Mozilla is developing a new JavaScript engine called JägerMonkey. To accomplish the feat, the outfit is borrowing some code from Apple's WebKit project.

Opera Software has announced it is at work on a new JavaScript engine named Carakan (pronounced Tsharakan) that is two-and-a-half times faster than the JavaScript engine in Opera 10.