I have run this free version in the GameObject frame, it works very well. Because of the ECS is new, so some components are not supported yet. I want to make a game with Unity ECS, can this pathfinding and local avoidance work in ECS?
There is nothing specific for ECS in this package. However as long as you can still communicate with normal monobehaviors then everything should work well. Pathfinding can even be done without monobehaviors (technically local avoidance too since the RVOController component is just a thin wrapper for another class which not coupled to a monobehavior).