Here's a C++ one: https://code.google.com/p/tiny-js/ https://code.google.com/p/tiny-js/ I started using it for a small side-project but had to put it on hold

Here's a C++ one: https://code.google.com/p/tiny-js/ https://code.google.com/p/tiny-js/ I started using it for a small side-project but had to put it on hold because of issues elsewhere in the stack. From a cursory glance at things, Duktape looks way more advanced, and being written in pure C should make it much easier to embed. I'll definitely give it a try when I have time to look at that project again. That said, the TinyJS code is extremely simple, so it makes a potentially good starting point for extending, if you want something JS-like rather than a pure JavaScript engine.