UPDATE:

Microsoft Message Analyzer

According to TechNet: According to the release blog the main feature of Microsoft Message Analyzer are :

Integrated “live” event and message capture at various system levels and endpointsParsing and validation of protocol messages and sequencesAutomatic parsing of event messages described by ETW manifestsSummarized grid display – top level is “operations”, (requests matched with responses)User-controlled “on the fly” grouping by message attributesAbility to browse for logs of different types (.cap, .etl, .txt) and import them togetherAutomatic re-assembly and ability to render payloadsAbility to import text logs, parsing them into key element/value pairsSupport for “Trace Scenarios” (one or more message providers, filters, and views)

I would say it’s a must-have tool for Network administrators since there is so much you can do. There is a TechNet blog dedicated to Microsoft Message Analyzer.

Microsoft Message Analyzer  Successor to Microsoft Network Monitor - 75