The CTK Workbench is a powerful rapid prototyping environment for OpenCL kernels. New kernels can be created by entering the OpenCL source code and defining inputs and outputs. These kernels can easily be connected to data sources and data viewers. Images, video streams, binary data and audio streams are supported. Sharing textures between OpenGL and OpenCL makes it possible to instantly display the results of OpenCL kernels operations. All results are visible in real time. Both Windows and Linux is supported.