S
WApache ActiveMQ
WApache QpidA
WApache Synapse
WAxway SoftwareB
WEnterprise Integration Patterns
WEnterprise service busC
WErply
WGuaraná DSLD
WInformatica
WInformation siloE
WLibrary Oriented Architecture
WPetals ESBF
WTryton
WVirtuoso Universal Server