DESC: Macromedia 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. Currently used in production at over ten thousand companies worldwide, JRun is the proven solution for reducing the time and cost associated with developing and deploying applications.