On the first letters it is possible to read – Node.js + Webkit if these concepts are not familiar to you yet, then you will understand soon about what there is a speech.
Node.js – the software platform based on the V8 engine which broadcasts our script in machine code. This platform was created in 2009 mainly for work with a backend of the websites.
WebKit — the free engine developed by the Apple company. It was for the first time announced as a part of Safari in 2003
So, both Node.js modules, and standard browser API will be available to the code written on JS for this technology (according to WebKit)