Workflow Engine .NET  1.5
Workflow Engine .NET Documentation

WorkflowEngine.NET - component that adds workflow in your application. It can be fully integrated into your application, or be in the form of a specific service (such as a web service).

The benefits of using WorkflowEngine.NET:

Terms of wokflow

WorkflowEngine.NET is perfect for:

Press release: link

PDF-version: link

Web-site project: http://workflowenginenet.com

Codeplex: http://workflowengine.codeplex.com

GitHub: https://github.com/optimajet/WorkflowEngine.NET