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.

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.

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.

Orifice
Orifice calculates size, flowrate or pressure drops for gas and liquid orifice meters based on ANSI/API-2530-1991, Part 3 (AGA-3) or the International Standard ISO-5167-1:1991. Customary or SI units.

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.

Sheet Lightning
Sheet Lightning is a specialised engineering 2D/3D CAD System for creating and unfolding sheet metal designs for fabrication or manufacture. It handles cylinders, cones, square-to-round adapters, ovals, intersections and mutli-intersections.