GeographicLib 1.51 can be downloaded from our website for free. The most popular versions of the program 1.5, 1.4 and 1.2. This free program is a product of Charles Karney. GeographicLib belongs to Development Tools.
From the developer:
GeographicLib is a small set of C classes for performing conversions between geographic, UTM, UPS, MGRS, geocentric, and local cartesian coordinates, for gravity (e.g., EGM2008), geoid height, and geomagnetic field (e.g., WMM2010) calculations, and for solving geodesic problems. It is a suitable replacement for the core functionality provided by geotrans.
You may want to check out more software, such as C++ Compiler, Sun Java Toolkit for CDC or MIDletPascal, which might be similar to GeographicLib.