Microsoft is publishing many of their “closed” protocols on the internet.
The starting site is: Microsoft Protocol Programs and Open Specifications.
Here is just a small list of available protocol downloads:
- Office File Formats Documentation (containing ppt, doc, xls, …)
- Windows Communication Protocols (MCPP)
- Windows Server Protocols (WSPP)
- Application Services and .NET Framework Protocols
- Microsoft Office Protocols
- SharePoint Products and Technologies Protocols
- Exchange Server Protocols
- Microsoft SQL Server Protocols
- Microsoft Exchange Server Standards
- Microsoft Office Standards Documents