Teigha Viewer
Teigha Viewer incorporates the power and flexibility of Teigha into a single application that can render both .dwg files and .dgn files using a common command interface for both formats. In addition, Teigha Viewer can be used as a test application for the Teigha Xtension (TX) Software Development Kit (SDK). TX developers can load custom TX modules, run custom commands from the console, and customize the Teigha Viewer menus.