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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.
GeoSolid3D produces 3D geologic solid models, incorporated into the aquifer and confining units of the USGS ground water models, Modflow and Sutra. Uses GIS data of DEMs, geologic maps, and maps of river, watershed, recharge, and aquifer parameters.
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.
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.
This project produces an Extension and VBA module that allows ESRIs ArcMap (v8.x) product to access Open Source Postgresql/PostGIS spatial data tables. Includes importing tables and exporting/updating back to the database. Currently using Postgresql OD