[3D File Format APIs for .NET Open Source .NET APIs for 3D Files Create, Read & Modify 3D File Formats via .NET APIs 3D File Format APIs for .NET Include Aspose.3D for .NET A Powerful Computer-Aided-Designing (CAD) API that allows .NET developers to create, manipulate, and export 3D files in a variety of formats. Geometry3Sharp Am Open Source .NET 3D APIs for Working with 3D Bitmap, Mesh Creation & Ray-Casting against the Mesh surface. Math.NET Spatial Open source C# .NET Library for geometric computations in .NET & Mono. It offers various geometry types, such as points, lines, polygons, curves, & surfaces.]