GOWProp calculates gas, oil and water PVT properties based on user selected method: - Gases: Natural Gas, Air and Nitrogen; - Liquids: Oil, Water, Methanol, MEG, DEG and TEG; Gas properties include: Density, Compressibility, Z-factor, Viscosity,Isentropic coefficient, etc. Liquid properties include: Density, Compressibility, Bubble point pressure (oil), Viscosity, Solution Gas-Liquid ratio (oil and water), Specific heat, etc.

ComfortAir HVAC Software
ComfortAir HVAC software is designed to be used by engineers, architects, contractors and energy auditors for calculating and analysing heating and air conditioning hourly loads in commercial buildings. Units can be set to English or Metric.

The GD&T Trainer: Professional Edition
Effective, economical GD and T training on CD-ROM. Contains interactive lessons, technical animations, narration, 3D part drawings, course administration tools. Valuable for designers, engineers, and anyone who uses engineering drawings.

Turbine
Calculate turbine steam consumption and exhaust steam conditions. Built-in steam properties. Wide variety of units of measure included.

OilProp
OilProp is designed to assess the core thermalphysic properties of oil and its derivatives necessary to solve transportation and processing tasks, with the minimum volume of input data.

BeamBoy
BeamBoy is a free engineering utility for calculating stress and deflection of structural beams under load. May also be used for shafts. BeamBoy is menu-driven and intuitive.