The intent of this software is to help companies/organizations find alternate chemical mixtures or solvents that still improve their processes but are not as harmful to our environment. The PARIS III database includes more than 4000 solvents commonly used by industry. In the search for replacements, it taps only those that have less environmental impact (greener), mixing them together in different proportions to find mixtures that perform as close as possible to the performance of those currently used by companies. The close replacement mixtures found can then be sorted to choose those mixtures that are least harmful to the environment. This solvent substitution software tool is provided by the EPA for free, and can be effective and efficiently used to help environmentally-conscious individuals find better and greener solvent mixtures for many different common industrial processes.