Microsoft Workflow Foundation
From Richard's Wiki
- Windows Communication Foundation (WCF) and Windows Workflow Foundation (WF) Samples for .NET Framework 4 (Microsoft download)
- Windows Workflow Foundation (WF4) - Introduction to State Machine Hands On Lab (MSDN)
- Windows Workflow Foundation on MSDN
- Hands On Lab: Introduction to Windows Workflow Foundation (WF4)
- WWF - Using, Activating, and Persisting Workflows