Poly by Google is a library of free 3D objects for augmented and virtual reality apps.
TheoremJS is a mathematical framework that is packed up with tons of useful mathematical functions. It is composed of functions in most mathematical fields such as algebra, number theory, statistics, etc... It was designed to fit your need, whatever you are trying to do.
Scale's 3D API provides all the data you need to build 3D perception using LiDAR, camera, and radar.
Developers can send us the data from all of the sensors of a robot (for example, a self-driving car or drone), and we will have humans label it with very high quality so you can build the AI for 3D perception.