It is the open-source project under the terms of Apache License 2.0.
It allows you to enjoy all the benefits of JsTestDriver right from the comfort of your IDE. This includes the following features:
Please visit Installation page.
Please visit Getting Started page.
You can find features that we are planning to implement in the future on the Roadmap page.
If you've found a bug, a glitch or anything that doesn't work well, please file an issue in the WebStorm/PhpStorm project issue tracker (select "Plugin: JsTestDriver" subsystem).
Please don't file an issue in the http://code.google.com/p/js-test-driver/issues/list?q=label:IntelliJ. Those bugs are handled normally, but it's an old way.
If you are considering participation in the development of the plugin, or just going to build it yourself, please visit Development page.