The WS-I is an industry standards organization that provides basic profiles to help foster interoperability among solutions based on XML and Web services industry standards.

OASIS is an industry standards organization that has developed a number of important technology specifications, including WS-BPEL and UDDI.

The W3C is a standards organization that has developed a number of important technology specifications, including SOAP, WSDL, and WS-Addressing.

The OAS-C is an industry standards organization that has developed a number of important technology specifications, including WS-Security and XML