It does exactly what we need. It's easy. It's opensource.
Our local theatre company needed a simple DMX lighting controller that also could playback sound effects, and that anyone could learn to use quickly and easily. We couldn't find one anywhere, so I made EasyCue.
Many thanks to the creators of the excellent tools and modules involved in this project:
Sebastian Wiedenroth for Node-DMX
James Simpson for howler.js
Made with Electron