Links AutoCAD with the journal function in Microsoft Outlook for time and billing.
http://www.autojournal.net/
PhD Thesis and freeware, Tcl based toolkit : Encapsulating Tools into an EDA Framework
http://members.tripod.com/~encapsulate
A basic experimental lab for geometric shape processing, for learning about the mathematical theory and practical maipulation of vairous parametric curves
http://www.pml.co.jp/cvt/index.html
Runs AutoCAD scripts and AutoLISP programs on a defined set of drawings, configurable through a graphical interface.
http://www.angelfire.com/clone/ezscript/
A Windows tray application that allows to define macros for AutoCAD keybord input.
http://www.command-digital.com/autohook.htm
Answers to Frequently asked AutoCAD Questions.
http://www.satelephone.com/~adee/aaa/
AutoCAD standards management and drawing translation software.
http://www.softcosys.com/
Database of tips and tricks for AutoCAD, AutoCAD LT, 3D Studio, Inventor and other products by Autodesk and HP.
http://www.cadforum.cz/