VR Gesture Tracker is a plugin for the Unity Game Engine that works with SteamVR / Vive as well as Oculus with Oculus Touch Controllers. You can purchase it here: UNITY ASSET STORE LINK
VR Gesture Tracker uses the power of neural networks to track your gestures in VR. It's an incredibly flexible plugin.
We provide integration with Playmaker so no need to program. Or if you like, you can integrate into your code using C# events.