The following is a list of web service protocols.

• BEEP - Blocks Extensible Exchange Protocol
• CTS - Canonical Text Services Protocol
• E-Business XML
• Hessian
• Internet Open Trading Protocol
• JSON-RPC
• JSON-WSP
• SOAP - outgrowth of XML-RPC, originally an acronym for Simple Object Access Protocol
• Universal Description, Discovery, and Integration (UDDI)
• Web Processing Service (WPS)
• WSCL - Web Services Conversation Language
• WSFL - Web Services Flow Language (superseded by BPEL)
• XINS Standard Calling Convention - HTTP parameters in (GET/POST/HEAD), POX out
• XLANG - XLANG-Specification (superseded by BPEL)
• XML-RPC - XML Remote Procedure Call