I remember a product in the early 90s called Toolbook, from Asymetrix (Paul Allen's company after he left MS). It was almost exactly like HyperCard for Windows

I remember a product in the early 90s called Toolbook, from Asymetrix (Paul Allen's company after he left MS). It was almost exactly like HyperCard for Windows 3.1. According to Wikipedia, it's still in existence, but has evolved to specialize in creating education and training apps, so may not be quite the same as I remember it anymore.