Started working on a case discussion platform for students around 18 months ago. Mostly for dentistry and medicine, but it's template-based so works well for other purposes (e.g. teachers, social workers, etc.). It's going well and is being used by three universities right now.

On the way, I developed lightweight image editor and 3D model viewer components, which I've open sourced [1].

[1]: https://github.com/kigun-org/