Albeit using QGIS for most of my GIS tasks, I still use ArcMap for final map production. I am curious and would like to test out EDN. According to Esri the annual subscription is $1,500. I'm not sure I'm ready to invest that much money into it as I'm not sure I'll even use it.
Do I have any options to develop on the ArcGIS platform without subscribing to EDN?