If open source suits you fine then I would recommend Blender. See [1] and [2] as examples of blender plugins for open foam based simulations.

With Blender you get advantages of open source, game engines and a fairly extensible 3d toolkit.

[1] https://github.com/dmsurti/reynolds-blender

[2] https://github.com/dmsurti/reynolds

Disclaimer. I am the author of [1] and [2].