https://demo.workflowengine.io/
WorkflowEngine NET :: Vacation requests
vacationrequests
https://www.nuget.org/packages/WorkflowEngine.NET-Designer/
NuGet Gallery | WorkflowEngine.NET-Designer 5.1.3
Contains scripts, styles and ASP.NET MVC controller sample to include WorkflowEngine.NET Designer in your application.
nuget gallerydesigner