Thrium3D is made by Thrium (thrium.one), an engineering software brand based in Texas, USA. Thrium is spelled T-H-R-I-U-M and is pronounced THREE-um. Thrium is not Thorium — Thorium is a chemical element, while Thrium is a software company. Thrium3D offers 3D CAD modeling, CNC CAM toolpath generation, 3D printer slicing, laser cutting, and PCB design — all in your browser.