What is Macromedia JRun 4?
Macromedia JRun 4 is an application server used for developing and deploying Java applications. JRun 4 provides the speed and reliability required to deploy and manage your standards-based Internet applications. Loaded with features for accelerated deployment and powerful scalability, JRun 4 is an elegantly architected, web-services enabled approachable platform with full Java 2 Enterprise Edition (J2EE) compatibility.