Case based reasoning (CBR) is receiving increasing attention as a way of developing intelligent advisory systems. Early CBR systems were developed using AI languages. More recently, commercial tools, such as CBR Express, ReMind, and Induce-It have been developed to facilitate the rapid implementation of CBR applications. In this paper, we describe the development of a prototype plant explosion advisory system using Induce-It. We use this experience as a basis for suggesting the strengths and weaknesses of Induce-It and other commercial CBR tools.© (1995) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.