[peregrine]

I am really looking to use V8 more then anything. Rhino is nice but the momentum is with V8. The issue with those is that a feature is Java library support and I personally would prefer native libs then some hack to make Java libs work.

[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.