MITCalc is the multi-language mechanical and technical calculation package. It includes solutions for gear, belt and chain drives, springs, beam, shaft, bolt connection, shaft connection and many others. The calculations are compatible with many types of 2D (AutoCAD, IntelliCAD..) and 3D (Inventor, SolidWorks) CAD systems and support both Imperial and Metric units and are processed according to ANSI, ISO, DIN, BS, Japanese and other standards.

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.

Data Master 2003
Free software for automation of professional test and measurement systems, data acquisition, processing and analysis. Especially suitable for scientists who would like to make high-performance, precise measurements in the experimental physics.

MITCalc
This multi-language calculation package includes solutions for gearing, belt, chain, springs, beam, shaft, and many others. MITCalc support 2D and 3D CAD systems, Imperial and Metric units and many international standards (ANSI, ISO, DIN….).

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.

CopanMobile for PocketPC
CopanMobile for PocketPC allows you to COGO (coordinate geometry), process field surveys, adjust map traverses, perform map/deed checks, calc curves and areas/perimeters, transform coords, interface with GPS, and import/export Ascii files. It's free.