I would like to create a visual DSL (boxes and arrows). I have found that I can create such a DSL using Microsoft's Visualization and modeling SDK (DSL Tools sequel, for VS2010) and there is also a lab on the subject. However, that would require Visual Studio 2010 to host my designer once I have created my DSL.
Is there any way to not require Visual Studio? With Windows Workflow Foundation (WF), it is possible to host a workflow designer in your own application, so it shouldn't be impossible.
Suggestions of other approaches are also welcome.