Allright Rig is a plugin for automatic creation of character rigs and working with character animation in Unreal Engine 4. The main goal is to create a possibility of creation and editing character animation, which will help to make games, previsualization, cinematics and animation movies in Unreal Engine 4.
This is an early access for those users who need the system to continue working on their projects. I still have some work to do on documentation, optimization and business setup. So in order to not be disappointed, that you do not understand something, I would rather suggest you to wait for the marketplace release, which will happen early fall 2018.
Allright Rig 2.0.5 supports 4.18, 4.19, 4.20 engine versions for windows and mac. If you buy current Early Access version you will have all future plugin updates.