http://ccflow.codeplex.com/
http://nginn.codeplex.com/
https://github.com/lafar6502/NGinnBPM
http://ringleflow.codeplex.com/
http://bpm2.codeplex.com/
https://workflowengine.codeplex.com/
https://github.com/optimajet/WorkflowEngine.NET
http://objectflow.codeplex.com/
https://sourceforge.net/projects/fiebase-ecm/?source=directory
引用：Microsoft.QualityTools.Testing.Fakes.dll
C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\PublicAssemblies\Microsoft.QualityTools.Testing.Fakes.dll
https://wfmvc.codeplex.com/
csharp:workflow and bpm(Business Process Management)
原文：http://www.cnblogs.com/geovindu/p/5809865.html