Create your own node based editors that work both in editor window and exported in builds by writing standard GUI/GUILayout interface.
Check the [WebGL demo]
Features:
- Menu
- Selecting
- Dragging
- Panning
- Deleting
- Connecting
- Deconnecting
- Sizing
- Renaming
- Minimap
- Grid
- Snapping
- Styling
- Popups
- Tooltip
- Runtime
- Serialization
- Full C# source
Feature details and documentation can be found here.