It is a system for interactive rendering on clusters of graphics workstation
Editor: Various parallel rendering techniques such as sort-first and sort-last may be implemented with Chromium. Furthermore, Chromium allows filtering and manipulation of OpenGL command streams for non-invasive rendering algorithms.

Chromium runs on Microsoft Windows and several types of Unix such as Linux and IRIX.

Among Chromiums features are

Sort-first (Tiled) rendering - the Frame buffer is subdivided into rectangular tiles which may be rendered in parallel by the hosts of a rendering Cluster.
Sort-last (Z-compositing) rendering - the 3D dataset is Broken into N parts which are rendered in parallel by N processors. The resulting images are composited together according to their Z buffers to form the final image.
Hybrid parallel rendering - sort-first and sort-last rendering may be combined into a hybrid configuration.
OpenGL command stream filtering - OpenGL command streams may be intercepted and modified by a stream processing unit (SPU) to implement non-photorealistic rendering (NPR) effects, etc. Heres an interesting example.
Many OpenGL programs can be used with Chromium without modification.
One can write Chromium-specific applications which perform parallel rendering with the aid of special synchronization primitives.
Chromium runs on Linux, IRIX, AIX, SunOS and Windows-based systems.
Chromium is an open-source project. you can free download Chromium 1.9 now.