Einstein's Garage
Einstein's Garage (a subsidiary of Fisher Scientific) is a virtual marketplace

for buying, selling or exchanging used or surplus lab supplies and equipment.  It's aim
is to provide economy in high quality materials to small-budget labs. 1/2001
Commerce
http://www.rpi.edu/dept/chem/cheminfo/chemres/chemres_15.html
Renesselaer Commercial Sites on the web
Vogel Scientific Software, Inc.
http://www.vogelscientific.com
Information provided by Vogel Scientific: A small company specializing in software for scientists. Currently introducing two new software programs for chemists. CIARA: a program that assists in planning and calculating chemical reactions and CALACO: a unit conversions program that also estimates boiling points at reduced pressure and performs density calculations. These programs were designed, developed, and tested extensively by organic chemists
SciTrak Buyers Guide
http://www.scitrak.com/
SciTrak is a free, comprehensive buyers guide of laboratory equipment, services, suppliers and information. The site includes scientific discussion, chat room, conference events schedule, as well as a catalogue of science related sites.