[3D File Format APIs for .NET Open Source C# .NET APIs to Create & Process 3D Files A Great Collection of Open Source 3D C# .NET Libraries for Creating, Reading, Editing, Converting, and Processing 3D Manufacturing File Formats via VB.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 An 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.]