From TeamDev Ltd.:
JxBrowser gives you a possibility to embed a web browser component, that supports cutting-edge web technologies and standards, into your Swing based Java desktop applications. So web documents, inside your application will look like in a web browser that they are designed for. JxBrowser supports integration with Internet Explorer and Mozilla (corresponding FireFox 3).
What's new in this version:
Version 3.4 has added out-of-process implementation for IE in 64-bit environment.