There are several ways to view content in MSMQ, both free and paid.
Visual Studio
The queues on the local machine can be listed using Server Explorer in Visual Studio:
If there is a message in one of the queues, select it and view the properties of the message in the property panel (press F4 to open) in Visual Studio:
The BodyStream property shows the contents of the message:
Windows native tools
The MSMQ MMC snap-in can be used to manage queues.
Use one of the following based on Windows operating system version:
Start > Run > compmgmt.msc > Features > Message Queuing
or
Start > Run > compmgmt.msc > Services and Applications > Message Queuing
QueueExplorer
QueueExplorer is a commercial third-party product for managing MSMQ.
QueueExplorer can do much more than the built-in management console, such as copy, move or delete messages, save and load, stress test, and view and edit full message bodies (with special support for .NET serialized objects).
Mqueue Viewer
Mqueue Viewer is a fast and free tool to manage MSMQ messages and queues. More advanced features are available in the paid version.
Mqueue Viewer is a fast and simple tool to manage MSMQ queues, view, edit, add, delete messages. It works with multiple machines/servers.
Service Bus MQ Manager
A free application to view and manage MSMQ messages.
https://github.com/danielHalan/ServiceBusMQManager
