CapeScience - Training, examples and chatroom for web services software developers using UDDI, WSDL and SOAP. - http://capescience.capeclear.com/
Iona SOA Solutions - Products that support Web services standards and service-oriented architectures, including Artix and CXF. - http://www.iona.com/solutions/soa/
SDO - An open source toolkit for developing fast and secure connected systems. By Noemax. - http://www.noemax.com/
Frameworx - An open source service-oriented infrastructure for ISVs and other producers of enterprise-class applications. - http://frameworx.tigris.org/
ServiceOrientation.org - Separates and describes the fundamental service-orientation principles, and discusses how they support and affect each other. - http://www.serviceorientation.org/