Normal Mapper For AE is a pay what you want GPU accelerated filter plugin that creates normal maps inside Adobe After Effects.
Create normal maps in AE using any bitmap source and use them in your favorite 3D rendering software or engine!
Normal Mapper uses luma values as input, so you can use any AE filters to affect the look of your normal map. Add noise, blur, high pass filter or any other effect of your choice to smooth out or add more crisp to your normal map.

Home page - https://aescripts.com/normal-mapper-for-ae/