Zea Engine is a Web-Based (TypeScript) 3D Graphics Engine SDK that's easy to use and supported by a dedicated team of developers. Zea Engine is for software developers and advanced manufacturers in the automotive, aerospace, heavy machinery, and robotics industries who work with large complex 3D CAD assemblies and who are currently dissatisfied with the performance limitations and costs of existing CAD visualization tools. We provide a next-generation 3D web platform to leverage CAD assemblies for downstream applications such as technical publications, part catalogs, interactive client demos, collaboration with external partners, eLearning, and collaborative remote diagnosis. Zea Engine is the only web-based 3D graphics engine capable of rendering huge assemblies, over 20,000 parts, like cars, planes, etc., entirely in the browser at VR framerates. Unlike other tools, we have a 100% secure web-based workflow. With a focus on performance, Zea Engine delivers 10x better compression than glTF file format and 10x better framerates on large assemblies than Three.js. Its open architecture and plugin ecosystem make it ideal for powering the next generation of web applications.