Is there any free usable component for workflow editor/designer?

I am trying to find a .NET component that allows GUI (drag-and-dro开发者_高级运维p) workflow design, and I need it as a part of a bigger software so I prefer it to be a usable component. What I imagine is it is similar to the GUI used to design workflows in Visual Studio 2008 and 2010. Is there any such component? I tried searching for a while and didn't have any luck. The best I could find are these

• http://www.wareprise.com/2009/03/13/list-of-top-open-source-bpm-workflow-solution/
• http://java-source.net/open-source/workflow-engines

but I don't think any of the items in those list are compatible with my requirements. has anyone been looking for this and found a good component? I am looking for a free one, and open source is even better if possible.

---

Workflow designer from Windows workflow foundation can be used as a control (re-hosted) and comes with all the funcatuionality:

http://msdn.microsoft.com/en-us/library/cc835242.aspx

---

You can host the Visual Studio workflow designer in you own application. This article explains how to do it (it's originally in French but Google Translate usually gives a decent translation)

---

Crainiate ERM Diagram is now Open Diagram. It's open sourced under the rather undesirable GPLv2 license.

---

It's not free, but the best you will find is Crainiate ERM Diagram

---

check out http://www.cDevWorkflow.com next generation workflow engine with graphical designer for .net applications and developers