FUSE ESB is an enterprise version of Apache ServiceMix – the most popular standards-based open source ESB. FUSE ESB 4.0 continues to provide support for widely adopted integration standards like JBI 1.0 and JMS while also ensuring support for the latest emerging standards like OSGi and JBI 2.0. The new FUSE ESB 4.0 provides a single platform that makes it easy for developers to implement the integration patterns they need with the programming model of their choice.