• Apache AXIS 1.0 Tutorial:
  Beginner's introduction to Apache AXIS.
  tutorial
   
• AXIS: The New Incarnation of Apache SOAP:
  An in-depth examination of AXIS architecture and features
  whitepaper

• Mac OS X: Making XML-RPC and SOAP Requests with AppleScript:
  Describes how to use the Apple Script and Apple Event Manager in Mac OS X to make RPC calls using SOAP and XML-RPC
  tutorial

• WebLogic Workshop e-docs:
  Collection of articles that introduce BEA's web services visual development environment.
  homepage | software

• The Knowledge Kit:
  Introduces PushToTest's web services testing system; includes a tutorial on BEA WebLogic Workshop
  package
   
• The Encoding Kit:
  Explores the scalability differences between SOAP encoding styles
  package
   
• The Performance Kit:
  A comprehensive overview of web service performance factors
  package

• Choreology Cohesions 1.0 Preview Package:
  Preview package for Cohesions 1.0, a management platform for web services transactions.  Includes live demonstration of  web service transactions using OASIS BTP (Business Transaction Protocol).
  package | BTP demo

• Collaxa BPEL4WS Tutorial:
  Implement a real-world BPEL4WS business flow with Collaxa's orchestration server
  tutorial | application
   
• Collaxa WSOS 2.0: An Introduction:
  Whitepaper introducing Collaxa's Web Service Orchestration Server. 
  whitepaper  | software

• IONA XMLBus:
  Shows how to transform a java application to a web service using IONA's XMLBus product
  tutorial | software

• Mail Application Server with WebServices:
  Using IVORY, shows how to access WebServices via emails.
  tutorial | whitepaper | whitepaper

• VB.NET: Write a Simple Web Service by Using Visual Basic .NET:
  Building a web service using MS VB.NET
  tutorial

• Oracle 9i Web Services Tutorials:
  Collection of tutorials showing how to use the Oracle 9i web services platform / tools.  Recent updates include a tutorial on Web Services Dynamic Invocation and a tutorial on Web Services Security.
  tutorials | fbs example

• Getting Started with SOAP::Lite:
  Simple tutorial for SOAP::Lite, the widely used SOAP stack for Perl
  tutorial

• Using SOAP Client:
  Tutorial introducing SOAP Client, a C++ Client library for the Windows platform
  tutorial

• Creating a Web Service in 30Minutes:
  Tutorial, published as an article on the Server Side, showing the development of a web service using the Systinet platform.
  tutorial

• Getting Started with GLUE:
  Simple tutorial for The Mind Electric's GLUE web services platform
  tutorial

• TierBroker Easy SOAP Now:
  Whitepaper walking through UDICo's TierBroker web services platform; includes a tutorial on using TierBroker to create web services.
  whitepaper

• webMethods Tutorials:
  Collection of tutorials on using the webMethods platform to create web services.
  homepage | software

XML Web Services Toolkits

• XML Web Services Developer Center Downloads
• GotDotNet Web Service Tools
• Apache Axis
• PocketSOAP
• Iona's XMLBus
• Cape Clear
• Systinet
• SOAP::Lite
• IBM's Web Service Tools
• The Mind Electric's GLUE
• A more complete list of SOAP implementations, maintained by XMethods

Journals

• Web Services Architect
• O'Reilly xml.com
• <?xmlhack?>
• Web Services Journal
• Dr. Dobb's Journal
• MSDN Magazine
• xml.org
• The XML Coverpages
• Application Development Trends

Organizations

• Internet Engineering Taskforce (IETF)
• W3C, World Wide Web Consortium
• WS-I, Web Service Interoperability Organization
• UDDI, The Universal Description, Discovery, and Integration Project
• OASIS, Organization for the Advancement of Structured Information Standards

Professional Services

• XMethods Registry of Deployed Web Services
• DevelopMentor Training
• DevXPert Training and Consulting
• Deep Training

Other XML and Web Service Resources

• W3C Workshop on Web Services Papers, April 2001
• New Intelligence
• WebServices.org
• SOAP Web Services
• SoapRPC.com
• WS Index
• Web Services Mall
• SAL Central
• XMethods Catalog of Web Services
• Cape Science
• XML Section of MSDN Library
• .NET Architecture Center
• DevX
• IBM Developerworks
• Aaron Skonnard's XML Links
• DevelopMentor's XML Information
• Learn XML Web Services Development
• Oakleaf Systems Web Services Examples
• PerfectXML
• TopXML
• .NET XML Web Services Repertory