Open source BPEL4WS and WS-BPEL 2.0 engine.  Packaged as a war and a JBI component for Apache ServiceMix.

This product includes software used under license from ActiveBPEL, LLC, but it is not an ActiveBPEL product and has not been tested, endorsed, or approved by ActiveBPEL, LLC. bpel-g is "Powered by ActiveBPEL"

The source code is taken from the 5.0.2 release of ActiveBPEL with some additions to bring it up to JDK 1.6, support for JBI, JMX, and XSLT 2.0. The source code is hosted on Google Code and the JBI deployment files use the same layout as Apace ODE.  

Petals Link, European open source SOA engineering company, provides open source SOA integration solutions, the Petals software suite.

Its flagship product is the open source Enterprise Services Bus Petals ESB.

Petals ESB brings SOA-compliant integration of applications – therefore improving flexibility and rationalization of the infrastructure, by exposing applications as reusable and freely combinable services.

SOA Governance is the key to a successful adoption of Service-Oriented
Architecture. It is the process of establishing a desired outcome for
your efforts, and then leveraging people, policies, and processes to
make that outcome a reality. This includes technical policies and
standards that guide your design-time activities, policies and
processes that impact your project selection and funding decisions, and
finally run-time policies that impact your operational management
activities.

BPEL2oWFN translates a web service expressed in WS-BPEL into a Petri net model.

The model can be used for computer-aided verification (model checking). Furthermore, the model can be used to

Intalio|BPMS is a complete business process management suite that uses the Apache Foundation's excellent Orchestration Director Engine (a.k.a. ODE) to process BPEL passed onto it.

BPMN is used to model processes in Intalio|BPMS Designer, which you can deploy to Intalio|BPMS Server to generate a model-driven application.

Ease of use was in mind when writing Intalio|BPMS, and therefore the model to application step has been simplified to a single click, "Deploy".