CadLib is A .NET DXF file manipulation library with 2D and 3D support that also handles export to image formats and PDF.

Object oriented 2D/3D graphics libraries with AutoCAD file format support, as well as a web-based version.

Develops, markets and supports software components for 3D modeling, visualization, and interoperability, such as the ACIS solid modelling kernel.

AutoCAD DXF tools for developers. ABViewer for Windows Commander and Far Manager. 3d DXF viewing and printing with C++, VB, and Delphi.

A 3D modeling kernel that consists of reusable C++ object libraries that are available as Open Source.

Provides a variational geometric solver for CAD, scheduling, planning and other intellectual solutions, using proprietary constraint-based technologies.

Offers components for CAD/CAM software, such as the 3D Core CAD-engine, the SmartFit 3D best-fitting application, and related functionality.

The VeCAD 2D vector graphics library can be used to create CAD applications.

Offers libraries for geometric solvers, trimmed surfaces, and polygon optimization, including visualization features.

Offers CADE, a CAD ActiveX control to view and edit 2D vector graphic, with web and DXF support.