Sonar is a trace marker tool that can be dropped onto any desktop; physical, virtual, PC or Mac. When the user experiences a problem they simply click on a button. Sonar sends the marker and logs the event. Sonar can inject a marker into any TCP flow, and even into multiple flows concurrently. And the marker can be found with any of your favorite network trace analyzers including Wireshark, Microsoft Message Analyzer, Viavi Observer Analyzer and Savvius OmniPeek Network Analyzer.