Alint: script-checker for BoA by Khoth, which I'm hosting for him.
Dialog Editor: a dialogue editor by Niemand.
Avernum 2 Template: outdoor sections from A2, re-created by Clint Peters.
Custom Objects Script Base: a starting point for your own custom objects scripts, using all the unused graphics available in the default graphics files.
Death at Chapman's
A scenario by Erik Westra. The Empire's most famous school of magery has mysteriously shut down. You must enter and find out why.
The BoA Editor Cookbook
A guide to some of the basic tasks of scenario-making. By Erik Westra.
The Mac 3D Scenario Editor
The 3D Editor. By Niemand.