Environmental Software Supplement is a supplement to the Directory of Environmental Software in Western Europe (Section 13) of the report "Environmental Software – A Strategic Study of the European Environmental Software Market that is circulated in July 1992. This release presents additional 59 environmental software packages and revisions to three of the packages that are featured in the original report. The first two chapters merely introduce and describe this book. Chapter 3 is the meat of this supplement, presenting the software package indices by application area; one of the indices is just a supplement and the remaining ones are complete. Application areas include agriculture and forestry, air pollution, buildings, climate and meteorology, energy, and hazardous substances. Laboratory, land contamination, noise pollution, risk assessment, survey and planning, transport, waste management, and water pollution application areas are also listed. This book is valuable to those who need a supplement to Directory of Environmental Software, or those who need information on environmental software packages.