Ashlar Vellum is a CAD package for mechanical engineers and designers, that includes the ability to intelligently predict where the user wants to connect the next object. There were both "2D" and "3D" versions.
| Download name | Version | Language | Architecture | File size | Downloads | 
|---|---|---|---|---|---|
|  Ashlar Vellum 1.01 for Windows (3.5-720k) | 1.01 for Windows | English |   | 2MB | 2 |