1. Text Align : Ever wanted to place DTEXT that is aligned to a line instead of having to specify the text rotation, well use this lisp routine to do just that. 
2. Viewcut : Cut those viewports with ease, Simply window the area want in model space, specify the zoom scale (always 1:xx) then place the viewport in Pspace.
3. AecMem : For the ADT user, here is a routine to assist in creating custom structural members from your polyline shape.
4. PipeMem : For the ADT user, here is a routine to assist in creating custom structural hollow members from your polyline shapes.
5. Steel Sections : For the structural drafty, replace your steel section block library with this steel shape section generator (Warning : Australian Standards) 
6. Caps Locker : Do you tire of forgetting to switch on caps lock when adding DTEXT, fear no more as this resolves the issue once and for all 
7. Terrain : Creat 3D terrain by importing points data from a text file, you'll be able to creat 3D contour, solid, 3d surface of the terrain.
8. Save Manager : Saves your drawing every 10 minutes religiously as your working, it's based on command usage such line, move Ect.
9. Clearview : Hide entities instead of have to fiddle with layers, has faciltites to UNHIDE specific objects or add to current hidden entities