Mitsuba Rendered is an open-source project maintained and developed by Wenzel Jakob and integrated to Rhinoceros by TDM Solutions SL. 

To download Mitsuba Rendered source code...

To download Mitsuba Rendered Plugin for Rhinoceros source code...

Mitsuba Rendered Plugin for Rhinoceros is developed using C# and RDK. Do you want to collaborate? You are more than welcome!

Are you interested to download the installer for Rhinoceros?