OpenDF.org is a web site where we collect links and documents relating to data flow tools and applications using the CAL actor language.

The CAL actor language was initially designed as part of the Ptolemy II project at UC Berkeley. A first compiler targeting hardware was implemented at Xilinx and this later became the open source project OpenDF. In 2009 CAL was standardized as part of ISO/MPEG for use in the RVC standard. Today there are a number of independent group