Tools written in AutoLISP language for AutoCAD and many of its derivative programs. Utilities mainly for structural and geotechnical engineers, but every AutoCAD user can find something useful here.

Special thanks to:

1. Lee Mac http://www.lee-mac.com/index.html
2. kojacek https://kojacek.wordpress.com/
3. kruuger http://forum.cad.pl/member/kruuger/
4. users from AutoLISP forums:
   • http://forum.cad.pl/
   • http://www.cadtutor.net/forum/forum.php
   • https://www.theswamp.org/
   • https://forums.autodesk.com/