V-RayBlender

V-Ray/Blender consists of 2 components: exporter and custom Blender build. V-Ray / Blender is an open source (GPLv2) project of V-Ray integration to Blender.You need V-Ray Standalone (or V-Ray For Maya Demo if you want just to try V-Ray). V-Ray Standalone is a separate product, and is also included in V-Ray For Maya.