Some alternatives are (since I'm fine with JVisulaVM I haven't tried them yet):
- JRockit Mission Control (will be added as Java Mission Control to some upcoming Oracle JDK)
- Argus JMX Browser
- MC4J JMX Console
- eclipse-jmx
- jManage
- JMiniX
- hawtio or something else based on Jolokia
- JMX Console Tools