PhysProps, is undeniably the most advanced and easiest to use thermodynamic/chemical physical property database and property estimation tool ever developed. The data base is composed of over 6,500 chemical specie names and their synonyms. There are 28 physical properties for each compound in the data base. If a particular compound is not in the database, there are 18 properties which can be estimated from standard techniques.
EngVert is an advanced scientific unit conversion program. EngVert is pre-configured to convert units in 39 major catagories and is user expandable to allow you to add conversions as your needs grow.
PipeDrop is an hydraulic pressure drop calculator for liquids, gases, and 2-phase flow.