Some of the great and useful tools available at codeplex site for biztalk developers. I listed down few of them here. BizTalk Server 2006 Documenter Creates compiled help files for a given BTS 2006 installation. BizTalk Server Pipeline Component Wizard A project meant to ease to development of pipeline components used within a BizTalk Server environment. Supports both C# and VB.NET BizUnit - Framework for Automated Testing of Distributed Systems BizUnit is a test framework that is intended to test ......