Uconeer 2.4 Freeware. 397 units in 46 categories. Includes engineering specific categories like enthalpy, heat capacity, heat transfer coefficient, torque and viscosity. Work with feet and inches. Formatting and clipboard features. Excludes archaic units.

ESBUnitConv - Freeware Unit Conversion 6.0.0 User friendly FREE Windows Utility to easily convert between 522 units of measurement in 20 categories.

Component Conversion Utility 0.6 Minimizes the time needed to create skeleton code in a variety of languages. Can generate code from data culled from a friendly GUI, JDBC connection, compiled code or source code. Supports XML, Java, HTML/JavaScript, SQL, EJB, C and ASP/VB .Net.