| W3C | World Wide Web Consortium |
| WAR | Web Archive |
| WAS | Web application server |
| WS-Addressing | Web Services Addressing specification |
| WS-Policy | Web Services Policy Framework specification |
| WS-PolicyAssertions | Web Services General Policy Assertions Language specification |
| WS-PolicyAttachment | Web Services Policy Attachment specification |
| WS-SecureConversation | Web Services Secure Conversation Language specification |
| WS-Security | Web Services Security specification |
| WS-SecurityPolicy | Web Services Security Policy Language specification |
| WS-Trust | Web Services Trust Language specification |
| WSDL | Web Services Description Language |
| WWW | World Wide Web |