Copan

Copan for Windows is a very functional and easy-to-use geomatics engineering tool for computing and managing plane land survey coordinates.
It does numerous coordinate geometry (COGO) calculations, processes and adjusts field survey data, computes and adjusts map traverse data, performs map checks, calculates areas and perimeters, performs coordinate transformations, and imports/exports Ascii files.
It supports quadrant and whole-circle bearings, south-based and north-based circle bearings, and gons (or grads) as well as degrees-minutes-seconds. It supports Geodimeter, Leica, Wild, Nikon and TDS total station formats.