OpenSCAD

An open-source, code-based 3-D computer-aided design (CAD) application that uses a scripting language to define 3-D models through constructive solid geometry operations. Unlike visual modeling tools, OpenSCAD creates models from textual descriptions of geometric primitives and transformations. This text-based approach makes it one of the more accessible 3-D modeling tools for blind and low-vision users, though additional support is needed to help users understand the spatial output of their code.