[tlrobinson]

So one of the cool things about Narwhal is it was created with the goal of supporting multiple interpreters. Where possible, code is written in JavaScript to facilitate sharing between interpreters. For example, the "binary" module is currently about 700 lines of JavaScript, plus about 100 lines of C/C++ or JavaScript per platform.

While Rhino is currently the most complete Narwhal platform (mostly due to the ease of prototyping in it) We've also started working on V8 (github.com/tlrobinson/narwhal-v8/) and JavaScriptCore (github.com/tlrobinson/narwhal-jsc) support. They're still very incomplete but it's a start.