CAD X11

CAD X11是一款2D制图、3D线框建模和曲面设计的软件，支持OpenGL。数据交换可以使用IGES、DXF格式，2D制图满足ANSI和JIS规范，CAD X11     有免费版和专业版。
CAD X11 Free is a general CAD system ideally suited for drafting (strengths in mechanical drafting) and light wireframe and surfacing modeling on Windows。

Standard features

CAD X11 Free include 3-D wireframe modeling, surfacing, DXF import, 2-D drafting with ANSI, ISO and JIS dimensioning, geometric tolerancing, TrueType Font support, undo/redo, dynamic rotations, multiple views, data verification, geometric analysis, crosshatching, Windows printer support and PDF output.