If you're looking for something other than DeepMotion, there are a few other options that show promise.
3D AI Studio is an AI toolkit that can convert text or images into 3D assets like models, animations and textures. It's got tools like Text to 3D, Image to 3D and AI Texturing that can cut hours or days out of your work and save you money. It's designed to be easy to use and fast, so it's a good candidate for game developers, animators and others.
Another contender is Mootion, which is geared for turning your ideas into high-end videos and 3D animations. It's got tools like Mootion Storyteller and Mootion Animator that can handle motion capture without cameras or motion capture suits. It's for content creators who want to accelerate their creative work with AI tools and deliver premium content.
Last is Move AI, which offers markerless motion capture technology to turn 2D video into 3D motion data. It can handle single and multcamera capture, hand and finger tracking, and high-end motion data. Move AI is designed to be scalable and can be used for everything from game development to advertising campaigns, so it's a good DeepMotion alternative.