High Quality Content by WIKIPEDIA articles! OLI Analyzer is a computer software used for simulating aqueous-based chemical systems. It is a graphical program developed by OLI Systems, Inc.(Morris Plains, NJ, USA) that utilizes a predictive thermodynamic framework for calculating the physical and chemical properties of multi-phase, aqueous-based systems. The thermodynamic framework is applicable to multi-component mixtures of chemicals in water, and is predictive over a wide range of temperature, pressure and concentration of interest. Supported by an in-place databank, the software allows users to predict the chemical and phase behaviour of mixtures of inorganic or organic chemicals in water.