YAWL (Yet Another Workflow Language) is a workflow language based on workflow patterns. It is supported by a software system that includes an execution engine, a graphical editor and a worklist handler. It is available as open-source software under the LGPL license.
Production-level implementations of YAWL include deployment by first:utility and first:telecom in the UK to automate frontend service processes, and by the Australian film television and radio school to coordinate film shooting processes. It has also been used for teaching in more than 20 universities.[1]