MuJS is developed and maintained by Artifex Software. It was originally developed for use with the MuPDF viewer, but is designed to be useful as an independent component.
The primary meeting place for the MuJS community is the #mupdf IRC channel on freenode.
With MuJS you can bring this power to your application as well!
MuJS is written in portable C and can be built by compiling a single C file using any standard C compiler. There is no need for configuration or fancy build systems. MuJS runs on all flavors of Unix and Windows, on mobile devices (such as Android and iOS), embedded microprocessors (such as the Beagle board and Raspberry Pi), etc.
MuJS is a simple language engine with a small footprint that you can easily embed into your application. The API is simple and well documented and allows strong integration with code written in other languages. You don't need to work with byzantine C++ templating mechanisms, or manually manage garbage collection roots. It is easy to extend MuJS with libraries written in other languages. It is also easy to extend programs written in other languages with MuJS.
It is a bytecode interpreter with a very fast mechanism to call-out to C. The default build is sandboxed with very restricted access to resources.
MuJS is free open source software distributed under the ISC license.