Lunascape 5 Alpha: High-Speed All-in-One Browser (IE7 + Firefox 3 + Google Chrome)
Lunascape 5.0 Alpha Genesis provides a shortcut to jumping between Google Chrome, Internet Explorer and Firefox, without running any of the actual browsers. In all fairness, the Lunascape browser does not deliver Google Chrome Beta, Internet Explorer 8, or Firefox 3.1, but its does manage to bring to the table the next best thing, all the underlying rendering engines used by Google, Microsoft and Mozilla.
Instead of juggling multiple browsers in order to adapt to interoperability issues or to websites optimized for certain browsers, Lunascape 5.0 Alpha Genesis allows the users to seamlessly switch between the Trident, Gecko and WebKit, rendering engines for navigation tasks.
The following is a snapshot of the "Select Rendering Engine" panel that appears when you first install the new browser:
Lunascape 5 Alpha is for developers only and it has its problems. On the other hand, it looks very promising and I might personally shift to it when it proves to be more stable and continue to be the fastest web browser in the world.
Have it all: Lunascape, the browser with three engines (CNET)
Download Google Chrome, IE and Firefox Wrapped into One (Softpedia)