SOAP

Cetus Links: SOAP
An index of SOAP-related resources.
http://www.cetus-links.org/oo_soap.html

Qt SOAP Manager
A GUI tool for sending SOAP messages that can be used for the development, debugging or exploration of Web Services. [Open source, GPL]
http://qsoapman.sourceforge.net/

SOAP Resource Center
A resource site for SOAP with protocol specs, whitepapers, tutorials, FAQs and software. By SoapRPC.com.
http://www.soaprpc.com/

SOAPAgent.com
An open SOAP directory.
http://soapagent.com/index.html

SOAPClient.com
Contains SOAP testing tools, sample services, free source code and other resources. By SQLData System, Inc.
http://www.soapclient.com/

soapware.org
Directory of SOAP-related resources. By UserLand Software, Inc.
http://www.soapware.org/

The XML Cover Pages: SOAP
Provides description and references for SOAP. By Robin Cover.
http://xml.coverpages.org/soap.html