Custom#Menu v1.91, AutoCAD menu editor
  and customizing utility. It works from
  within the AutoCAD drawing editor with
  AutoCAD release 9 thru 12. Pop, Screen,
  Tablet and Button menus can be created
  and modified. CMenu provides support for
  user commands, point picks, load and run
  AutoLISP and ADS programs, block insert,
  user edit, and "learn" mode to record
  commands in as you enter them. <ASP>

  ELF is a fast, flexable library of 193
  functions and 17 commands for AutoCAD
  and AutoLISP. Includes ASCII file browse
  and editor, video, window, math, entity
  creation, keyboard, file, menus, list
  handling, string handling, sound, and
  debugging functions. (ASP) Jerry Workman

  PC-BLOX v1.0 - Virtual Reality 3D CAD solid
  modeling system for kids and adults.
  Just like playing with toy building blocks!
  Dozens of shapes to build with. Make cars,
  castles, spaceships - anything you can
  imagine! Has CAD features like rotate, flip,
  copy and extrude. Prints and saves models.
  Easy, fun, educational. The author sponsors
  a design contest. CGA and up. Mouse optional.
  From Vic Slade Software. Shareware, $27

  TabPro v2.0 AutoCAD interface to
  spreadsheet data. Paste tables and
  other tabular text and numerical
  data into your AutoCAD drawing.
  TabPro reads Lotus and Excel files
  directly, and runs from  within the
  AutoCAD drawing editor. <ASP>

  TommySoftware CAD/Draw v1.10 - File 1 of 4
  Powerful CAD and drawing application for
  Windows 3.x. Features are:
   - Associative dimensioning,
   - User defined hatchings,
   - Library mamangement,
   - Context sensitive help.
  Please do first unpack the first archive,
  it contains a SETUP.BAT and a README.TXT!
  By TommySoftware.

  TommySoftware CAD/Draw v1.10 - File 2 of 4
  Powerful CAD and drawing application for
  Windows 3.x. Features are:
   - Associative dimensioning,
   - User defined hatchings,
   - Library mamangement,
   - Context sensitive help.
  Please do first unpack the first archive,
  it contains a SETUP.BAT and a README.TXT!
  By TommySoftware.

  TommySoftware CAD/Draw v1.10 - File 3 of 4
  Powerful CAD and drawing application for
  Windows 3.x. Features are:
   - Associative dimensioning,
   - User defined hatchings,
   - Library mamangement,
   - Context sensitive help.
  Please do first unpack the first archive,
  it contains a SETUP.BAT and a README.TXT!
  By TommySoftware.