OOONEIDA - FBench

This is an open-source development, managed and documented at sourceforge.net/projects/oooneida-fbench

From their homepage:

<<The FBench is the ongoing development of an open-source graphical software tool for embedded automation components and systems based on the IEC 61499 standard. The project originates from the OOONEIDA Workbench pioneered by Dr. James Christensen in 2005. >>

Last version is beta 2, uploaded on 2009-03-19

It supports:

• Development of IEC 61499 Function Blocks with separated Event- and Dataflow in form of Java classes
• Programming of Algorithms in FBS, Ladder Logic, ST, Java
• Assignment of Algorithms in the Execution Control Chart (ECC)