Datum Pro
- Windows program which converts between map datums and projections, including Gauss Kruger, TM, UTM, and Lambert Conic grids.
- http://www.geomatix.net/datumpro

Basin and Range Geodetic Network
- It is a collaborative project between the California Institute of Technology Division of Geological and Planetary Sciences and the Harvard-Smithsonian Center for Astrophysics Radio and Geoastronomy Division.
- http://www.gps.caltech.edu/research/bargen/

Geodesy for the Layman
- The publication attempts to develop an appreciation of the scope of geodesy and to generate some understanding of the problems encountered in the science.
- http://www.ngs.noaa.gov/PUBS_LIB/Geodesy4Layman/toc.htm

National Imagery and Mapping Agency Geospatial Sciences Division
- Branch of US military responsible for maintaining satellite geodesy, conducting geodectic survyes, and collecting, processing, and evaluating gravity data (free-air and Bouguer gravity anomalies).
- http://earth-info.nga.mil/GandG/

Land Surveying and Geomatics: Geodesy
- Links to education and government sites.
- http://surveying.mentabolism.org/

Curtin University Geodesy Group
- Overview of the geodetic activities the group, biographies of members and details of recent research projects.
- http://www.cage.curtin.edu.au/~geogrp/

Geodetic Datum Overview
- Introduction to geodetic datums, geometric earth models, global coordinate systems (such as latitude and longitude), datum conversions, and related topics. University of Texas.
- http://www.colorado.edu/geography/gcraft/notes/datum/datum_f.html

Geodesy Laboratory & PANGA Data Analysis Facility
- They are part of a research program with the Department of Geological Sciences, Central Washington University.
- http://www.geodesy.cwu.edu/

James Q. Jacobs - Geodesy Page
- Definitions relating to geodesy, explanations of coordinate systems, and geodesy formulas. Reference ellipsoid defined with derived geometrical constants, equation of the meridional ellipse, and geometry of the meridian section.
- http://www.jqjacobs.net/astro/geodesy.html