An integration appliance is a computer system specifically designed to lower the cost of integrating computer systems. Most integration appliances send or receive electronic messages from other computers that are exchanging electronic documents. Most Integration Appliances support XML

XML

Extensible Markup Language is a set of rules for encoding documents in machine-readable form. It is defined in the XML 1.0 Specification produced by the W3C, and several other related specifications, all gratis open standards....

 messaging standards such as SOAP

SOAP

SOAP, originally defined as Simple Object Access Protocol, is a protocol specification for exchanging structured information in the implementation of Web Services in computer networks...

 and Web services are frequently referred to as XML appliance

XML appliance

An XML appliance is a special purpose network device used to secure, manage and mediate XML traffic. They are most popularly implemented in Service Oriented Architectures to control XML based Web Services traffic, and increasingly in cloud oriented computing to help enterprises integrate on premise...

s and perform functions that can be grouped together as XML Enabled Networking.

Vendors providing integration appliances

• Cast Iron Systems iA3000
• DataPower
  DataPower
  DataPower is a product division within IBM that produces XML appliances for processing XML messages as well as any-to-any legacy message transformation...
  
   XI50 — IBM
  IBM
  International Business Machines Corporation or IBM is an American multinational technology and consulting corporation headquartered in Armonk, New York, United States. IBM manufactures and sells computer hardware and software, and it offers infrastructure, hosting and consulting services in areas...
  
  
• Integration Appliance (IntApp)
• Intel SOA Products Division's
  Intel SOA Products Division
  Intel SOA Products Division is a group within Intel which releases XML processing and security software for transforming XML messages. Their primary product line, SOA Expressway, is a family of software and hardware XML Gateways that are used in SOA architectures on-premise or in the cloud...
  
  SOA Expressway
• Meddius Integration Router
• Tervela