Astron International, Inc. Custom software development. http://www.astroninc.com

Chempute Computer Software and equipment for the Engineering Industry and for teaching engineering principles http://www.chempute.com/

Computer Toolbox A collection of computing tools for chemical engineering calculations. Examples include Spreadsheets (MS Excel), Maple V, Aspenplus and ASCEND. http://www.eb.uah.edu/che/tools/

G&P Engineering Software: Chemical Engineering, Physical Properties, Property Estimation Chemical physical property data base and property estimation tool. http://gpengineeringsoft.com

Cape Software's VPLink An easy to use simulation package for control testing and operator training needs. VPLink connects to most DCS and PLC systems in place of the real I/O allowing thorough testing of control software before plant start up. The package also provides flexible, low cost operator training simulators. http://www.capesoftware.co.uk

Intelligent Optimization Group Specializes in advanced process control, multivariable predictive control, real-time optimization, expert systems and neural networks for the refining and chemical processes.completed and available training courses. http://intellopt.com

Engineering Process Tools Unique collection of online and free engineering and scientific tools/calculation aids. http://www.processassociates.com/process/tools.htm

AQUAlibrium A software package for predicting the fluid phase equilibria in natural gas-water systems, in particular sour natural gas. http://www.telusplanet.net/public/jcarroll/AQUA.HTM

Free Online Applications for Engineering Design Interactive online engineering applications to assist you in designing, constructing, and maintaining your facility. Current Categories:Liquid & Gas Flow, Pumps, Heat Transfer, Vessels&Tanks, Valve&Piping, Civil/Structural http://www.freecalc.com

Prode Software for chemical engineering and process industries , PPP integrates with Microsoft Excel, Visual Basic, and Lotus 1-23 for quick and rigorous process simulation, PD-Plus is a low cost simulator for petrochemical processes. http://www.prode.com/

Vapor Pressure of Binary Mixture Downloadable spreadsheet to help find the vapor pressure of binary liquid mixtures with minimal inputs.  The spreadsheet is based on Excel 97.  Complete with a comprehensive list of Antoine Equation constants needed for the calculations. http://www.fortunecity.com/campus/german/207/vpmix.html

CACHE Corporation (Computer Aids for Chemical Engineering A not-for-profit organization whose purpose is to promote cooperation among universities, industry and government in the development and distribution of computer-related and/or technology-based educational aids for the chemical engineering profession. http://www.che.utexas.edu/cache/

DataFit 6.1 A science and engineering tool that simplifies the tasks of data plotting, regression analysis (curve fitting) and statistical analysis. A 30 day evaluation copy may be downloaded. http://www.oakdaleengr.com/features.htm

VLECalc, shareware for VLE w/ UNIFAC, NRTL A shareware tool for chemists and engineers who develop manufacturing processes using organic solvents and chemicals. VLECalc can estimate the vapor pressure and boiling point of an organic mixture using UNIFAC or NRTL activity coefficients. It can simulate a simple batch distillation or solvent replacement operation. Requires EXCEL 97 http://www.net-link.net/~wdkovats

CemoS - Chemical exposure model System A model developed for prediction of fate and distribution of hazardous chemicals released to the environment, from the University of Osnabrück. The model is available for download; a textbook is available for order. http://www.usf.uni-osnabrueck.de/projects/CemoS/CemoS.en.html

GTT's Technical Thermochemistry Web Page Source of information on the application of technical thermochemistry. Focuses on software (ChemSage, ChemApp, and ChemSage-Teach) http://gttserv.lth.rwth-aachen.de/~sp/tt/

ChemicaLogic Corporation Thermodynamic Properties of Steam, moist Air, CO2 can be calculated with given software tools and excel add-ons. http://www.chemicalogic.com/

The Web Page of MTB Free Software for the chemical engineering found on the web. Only FREEWARE programs. http://www.geocities.com/manueltb/page8.html

Gaseq Chemical Equilibrium Program A free Windows program for combustion related chemical equilibrium calculations: flame temperatures, compositions, shocks and detonations. http://www.c.morley.ukgateway.net/

HES - Heat Exchanger Simulator Educational software for shell and tube heat exchanger simulations. http://efftech.tripod.com/hes.htm