One that is not in the web services FAQ, but is recommended in a book on SOA I am reading, is JBoss jBPM:
http://www.jboss.org/jbossjbpm/ Seems to have good documentation and an Eclipse plugin for visual editing of business processes.
BPEL is an XML-based grammar for describing the logic to coordinate and control web services in a business process. The roots of BPEL began in December of 2000, when Microsoft published XLANG. This was followed in March of 2001 when IBM published the Web Services Flow Language or WSFL.
BPEL itself was first released in July of 2002, as BPEL 1.0. BPEL 1.0 merged the flat-graph process definition approach and the structural constructs approach of the previous langauges into BPEL 1.0. In May of 2003, BPEL v1.1 was released with a set of revisions, and that was the version of the specification that was submitted to the OASIS organization.
OASIS standardized the language in April of 2007 and it is now known as formally as WS-BPEL 2.0.
I am having a one more query regarding SOA designing and i am asking in the context of a service consumer making use of a service provided by others .
Why everybody these days are interested in SOA ??
The question i mean to ask is from a Service User Perspective , arent we coding our Application forcefully in the idea of making use of Other Software ??