Converts GIS data from CARIS NTX format into ESRI shapefile format, preserving virtually all features and attributes. Supports points, lines, polygons, text, spot heights and soundings. Includes a batch utility, an API, and an ArcView GIS Extension.
Geodesy based library (geodetic and geocentric functions)
geoStarsLib has functions for dealing with many geodesy-based problems found in positioning, pointing, and surveying situations. It is useful to determine absolute position on the earth, pointing vectors, coordinate transformations, and other functions.
3D Online Content Management System
The NHD Software Project is a collection of the utilities, scripts, APIs, standards, and application extensions used for the quality assurance of stream and river data, conflation/generalisation of hydrographic data, and other hydrologic data maintenance.
A toolbox of open source geospatial essentials