A new release of the YAWL (Yet Another Workflow Language) system is
available.

YAWL (Yet Another Workflow Language) is a workflow language/management
system based on a rigorous analysis of existing workflow management
systems and workflow languages. Unlike traditional systems it provides
direct support for most of the workflow patterns
(http://www.workflowpatterns.com). YAWL supports the control-flow
perspective, the data perspective, and is able to interact with web
services declared in WSDL.   It is based on a distributed,
web-friendly infrastructure.

Project: http://www.citi.qut.edu.au/yawl
Documentation: http://www.citi.qut.edu.au/yawl/yawldocs.jsp
Download: http://www.citi.qut.edu.au/yawl/downloads/download.jsp

YAWL is an open source initiative and the key people are:
   Arthur ter Hofstede http://sky.fit.qut.edu.au/~terhofst/
   Wil van der Aalst http://is.tm.tue.nl/staff/wvdaalst/
   Lachlan Aldred http://sky.fit.qut.edu.au/~aldredl/
   Marlon Dumas http://sky.fit.qut.edu.au/~dumas/
   Lindsay Bradford
http://www.citi.qut.edu.au/people/student_pages/bradford_l/index.html