This tool can be used to see the Convoy properties associated with any running Orchestration processing messages as a Convoy. Note that this queries critical BizTalk tables. Run with care. This tool works with BizTalk 2004 and BizTalk 2006.
Get more information from the original blog post on this topic: https://www.biztalkgurus.com/blogs/biztalk/archive/2005/02/11/Convoy-Subscription-Viewer-for-BizTalk-Server-2004.aspx