Apache Camel - Apache Camel is a versatile open-source integration framework based on known enterprise integration patterns.
Software AG webMethods - Software AG’s webMethods enables you to quickly integrate systems, partners, data, devices and SaaS applications
IBM App Connect - IBM App Connect is the all-in-one integration tool for connecting apps, integrating data, building APIs and acting on events
WSO2 Enterprise Service Bus - WSO2 ESB enables enterprises to be more agile in delivering new digital products and services, both internally as well as across digital ecosystems.
Peregrine Connect - The only enterprise integration product built on Microsoft .NET. Peregrine enables you to quickly and easily connect your line-of-business systems.
RabbitMQ - RabbitMQ is an open source message broker software.