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A Tour of the Web for Geoscientists

Software and Software Sites

The Soft Earth is the second part of Web page of internet resources for Geoscientists. The first is The Virtual Earth which is an introduction to the Web, concentrating on starting points for Web exploration, data searches and special Earth Science connections.

 The Soft Earth aims to be more of a resource listing for Geoscience software available on the Internet.

 As with the Virtual Earth, feel free to peel this document off your browser and modify it to your hearts content. The original can always be obtained by clicking here.

 The Soft Earth is mirrored at Oxford University in the U.K. Other mirrors include Mikael Niklasson's page in Sweden, the University of Zaragoza in Spain, and by Sam Toon in Liverpool.

A significant ammount of data and software is available over the Internet by anonymous ftp as this was one of the first methods for transferring files. Some software is available via gopher. The HTTP protocol is capable of accessing both of these types of servers. More recently, a lot of software is being transferred to HTTP servers, and the inventory being stored in searchable databases.

 What is provided here are the links to the software. The onus is on the user to ensure they can download files with their preferred browser. The software is for various platforms and is of variable quality.



This section includes sites that have an assortment of software of interest to geoscientists, and sites with hotlists to other sites.

 The first link is to Common Internet File Formats page by Eric Perlman and Ian Kallen. This page lists the common file types used on the Internet by Mac and MS-Windows platforms, how to handle them with software links. PC users should see the Multimedia File Formats on the Internet by Allison Zhang, and for all platforms, the Cross-Platform Page by Eric Bennett.

 ArchiePlex is an Archie gateway to the Web, and it can search for and locate files on anonymous ftp servers. This site is a link to all the ArchiePlex servers around the world, both forms based and those without forms.

 The ftp Search is similar to ArchiePlex, being a configurable search engine of ftp servers.

 What was known as the Virtual Software Library from CNet has now moved to Shareware.Com. This is a searchable data base of over 190,000 files from various archive sites. Files are shareware and freeware software for Dos, Windows, Unix, Macintosh, Amiga platforms. Search type include quick search, most popular, new arrivals, power search and archive search. The Oakland Software Repository has a large collection of MSDos, Windows, Macintosh and Unix shareware utility and specific software. The Virtual Software Library Front Desk is the access point to search the OAK repository and other popular archive sites. There is also the Walnut Creek CDROM SimTel Mirror which is the distribution site for MS-DOS, Windows and Windows95 software.

A search for general software using various web searching tools is available from the Software catagory of the All In One Search Engine. This is by William Cross and Albany Net.

 The Harvest PC Software Broker searches the descriptions of over 34,000 PC software distributions from 6 major public archives.

 The Windows Shareware Archive at the CSUSM Technical Services has connections to its ftp server with many execllent shareware programs for MS-Windows. Some of these will be of interest for geoscientists and educators, plus general software. Tucows and its mirrors have assorted Winsock applications for Windows, W4W and Win95.

The Archives of Graphics Software and Databases is a hot-list of graphical software sites by Dan Jacobson from John Hopkins University, BioInformatics server. There is also the Soft Search to search for software. These connections can be flaky and you may need to enter from the home page.

 The IAMG's Web Server has links to the IAMG ftp Site for algorithms and source code of programs published in Computers and Geosciences and Mathematical.

 There is a Searchable Index of the computer programs. Another link is to the Computer Programs and and Data in the book by Jim Carr - "Numerical Analaysis for the Geological Sciences.

 The Center for Global and Regional Environmental Research has an extensive listing of Software Links in assorted categories such as Unix, statistical, mapping, image processing ray tracing and more.

 The Petrotechnical Open Software Corporation, or POSC, is a supplier of standard interfaces for technical Exploration and Production software for the Petroleum Industry. It operates as a Not for Profit membership organisation.


General Geology

The Geotechnical and Geo-environmental Software Directory details several hundred programs, software publishers and suppliers in the field of Geotechnical Engineering, Engineering Geology, Hydrogeology and Geo-environmental Engineering, Data Analysis and Data Visualistaion. It also links other Web pages with related software. It is compiled by Tim Spink. The Archives at COGS, or Computer Orientated Geological Software, has archives of MS Dos and Macintosh software, many include source code. Categories include COGS disks, Geochemistry, Geophysics, Graphics, Hydrology, Landsat, MOSS, Mapping, Mineralogy, Mining, Oil & Gas.

 GeoGopher Archives of Earth Science software at the University of Texas, El Paso has a collection of Dos based software for the geosciences and connections to other sites.

 The Software Page at the Institue of Geology and Paleontology (EISES) has some Dos/Windows software, some of which are mentioned elsewhere. Included are GeoVu (a NGDC Windows GIS/RS data visualisation program), Landscape Explore (Windows program to translate a 2D map into a 3D model) and GeoEAS (EPA's geostatistical software).

 North Dakota State Univerisity Geology Dept's web server has connections to an assortment of geological software, mainly for the Macintosh. Included are: Amphbase, Crystal and Crystal View, Emp-amph, Hornblende-plagioclase geothermometry, Latticemaker, MacMolecule, Ortep, Pcwateq, P-T-t programs and Stereonet.

 The Australian Mining Software Catalog is a directory of information technology resources for exploration and mining, both in Australia and internationally. It is an initiative by the CSIRO Division of Exploration and Mining and maintained by Stephen Henley.

 Russ Jacobson's Software Links is a hotlist to assorted sites and software pertaining to thr Earth Sciences. Another list is the Software Links from ANON at Houston University, and is from Computers and Geosciences.

 Geological Software from Erlangen University has assorted Windows, Dos, Mac and Unix software, including WinTek (analysis of structural data), MudMaster, WinFit (profile analysis of x-ray reflections), WinQ-Fac ("Q" descriptor for mixed layer clays), Atterberg, Centrifuge (calculate settling times), CrossBed (rotating crossbed measurements), regression, TriDraw (ternary plotting), MacGresens, MacDiff, and Quicktrace (digitize source data from cartesian, ternay or polar plots on a Mac.

 Ken Wohletz's geological software include a number of geological applications for volcanism and magmatism. These are freeware and are for Windows (some Dos). They include ERUPT to simulate various volcanic eruption types, HEAT is a 2D heterogeneous heat flow solver (useful for modelling magma chamber evolution), SFT is a graphical application to invert particle size data to find distribution parameters, and MAGMA which calculates the IUGG volcanic rock classification, CIPW norms, viscosity, and density of magmatic silicate liquids from chemical composition and temperature.

 The Geotechnical and Geo-environmental Software Directory details several hundred programs, software publishers and suppliers in the fields of Geotechnical Engineering, Engineering Geology, Hydrogeology, Geo-environmental Engineering, Data Analysis and Data visualisation. It also links other web pages with related software. The Directory was compiled by Tim Spink.

 The Alfred Wegener Institute of Polar and Marine Research have delevoped two packages, PanMap and PanPlot. PanMap is software to produce vectorised worldwide bathymetric maps of high quality. PanPlot is a core or log data plot program to draw very fast multiplots. This Link will access both programs.

 Rainer Petschick has developed some Macintosh Applications such as Mac Diff, SediTools, Log Generator and QuickTrace. Rainer has also made a Software List of Macintosh geological software held on the GPI Frankfurt server.


Terry Gordon from University of Calgary maintains a collection of links pertaining to Thermodynamics and Phase Equilibrium Calculations in Geology. The main sections include Igneous Petrology (MELTS, QUILF), Metamorphic Petrology (GIBBS, T-T-t, TWQ, WEBINVEQ), Aqueous Geochemistry (EQ3/6, MBSSAS, MINEQL+, ALCHEMI). Other sections include Commercial Sites, Web Directories and Programming Tools.

 The Environmental Research Software has a number of Dos software as freeware. Included are MINEQL+, a chemical equilbrium modeling system, ALCHEMI, to calculate the distribution of Aluminium in acid waters, and GRiDS, a Global River Dilution System.

 Crystal and CrystalView are both Crystallography software for the MacIntosh by Thomas Kosel.

 The NewPet Software is a geochemical/igneous petrology data handling program which includes ternary plots. Written by Daryl Clark it is MS-Dos and Shareware. Other software at this site include rose1 (Windows rose plotting program by Thompson and Thompson - shareware) and triplot2 (a ternary plotting program by Baodke and Thompson.

 COGS has both a Mineralogy directory and a Geochemistry directory.

 Sincris in France have a Searchable Database of descriptions and links to software related to crystallography.

 STATPAC is a geochemical statistics package from the USGS. It is available in Dos and Unix versions.

 MELTS is a software package for modeling crystallisation of magmatic systems. It is available for a number of Unix workstations, including DEC/alpha, DEC/RISC, Sun/Sparc, IBM/Risc, Data General, HP and SGI. The software for the various platforms is on their ftp server.

 Athena Mineralogy has links to Dos and Windows programs for mineralogy, petrology and chemistry.

 TriPlot is shareware ternary plotting software for Windows by Steve Baedke at Indiana.

 Bob's Rock Shop includes links to several software sites, including Mineral Mastery (Dos mineral identification), Gemstone, The Mineral Database, and the Minlog System

. Mark Winter from Sheffield University maintains a list of Chemistry Software Sites, some of which may be useful for geochemistry.

 There is a preprint of a C&G note by Daniel Marshall of using spreadsheets to create ternary diagrams, plus an Excel spreadsheet for ternary plots.

 Perple_X is a collection of fortran programs for calculation of petrolgical phase equilibria.

Structural Geology

Stereo v3.0 is a complete stereonet package for Windows. Get the file It is written by Per Ivar Steinsund and is shareware.

 Rick Allmendinger's structural programs for the MacIntosh are quite well regarded. Included are FaultKin, Stereonet, MacStrat, MacStress, MicroStructure and Structure_Movies.

 Johannes Duyster's Stereo-Nett program is freeware for Windows 3.x and Win95. It is a stereo net program to analyse orientation data using different projections, great and small circles, density contouring, rose diagrams. It can also do paleo-stress analysis from fault-slip data sets. Data can be sorted on a number of criteria, including comments.

 Quickplot is a stereonet program for structural geology. It is by van Everdingen and van Gool.

 Another steronet program is StereoPlot, a Macintosh program for plotting and analysing orientation data. It was written by Neil Mancktelow.

 A program for high amplitude folding simulations by Kenneth Cruikshank is avalaible.

 Steven Schimmrich has links to assorted structural geology software in his Structural Geology Page

Marine Geology

Microdem, includes the MGT subset for teaching marine geophysics, is available from the US Naval Academy's ftp server. Also available are a group of programs for oceanography including TS-Plot, Waves, Tides, Duck, beach profiles, and marine geology. 


Environmental Hydrosystems Inc Enviromod ftp server which holds a comprehensive collection of public domain software (Dos, Windows, some Unix) for groundwater, porous media and environmental modeling. They have upgraded to high speed digital lines so connectivity is greatly improved. The main directories of interest for hydrology are: BioPlume II, Chem Flow, GeoPack, Geostat, Graphics, HSSM, HST3D, MOC, ModFlow, Mofat, MT3D, Sutra and Swiftii.

Andrew Piggott looks after the Software for Groundwater Modeling and Analysis pages of connections. There are both non-commercial and commercial sites for hydrology and hydrogeology software sites.

 COGS has a Hydrology directory.

 Richard Winston at Louisiana State University has a collection of executables and source code on various groundwater models. Included are Modflow and related programs (ModflowP, ZoneBudget, ModPath and StreamLink), Sutra (2D finite element groundwater flow model), SutraInv (parameter estimation for Sutra), MOC89 (solute transport and dispersion), PLASM (2D finite Diff. groundwater flow) and TypCurv. Richard also has the MODFLOW Resources Page which has a description of the resources, plus links, for Modflow.

The USA EPA Center for Subsurface Modelling Support have a number of Groundwater and Vadose Zone Models available. Included are BIOPLUME II, BIOSCREEN, CHEMFLOW, GEOPACK, HSSM, MODFLOW, MOFAT, MT3D, RETC, RITZ, STF, UNSODA, VLEACH, WhAEM and WHPA.

UnCert is a public domain geostatistical analysis and graphical user interface for ModFlow abd MT3D. It is a geostatistical uncertainty analysis package applied to groundwater flow and contamination transport modelling. The UnCert Users Guide is also available online.

Steve Owens of the Groundwater Modeling department at Brigham Young Uni has an extensive list/collection of groundwater modelling software, both commercial and freebies. In the Models section can be found IGWMC (source code for USGS models), CEAM from EPA, USGS Geochem models (Phreaqe and WATEQ4F), 2DFlow, PUMPIT, MCFIT plus others. In the Pre and Post Processes can be found links to Femmwater, IRIS Explorer, Flow Analysis Software Toolkit, Khoros, SpyGlass and more.

 The source code for the USGS Groundwater Models is carried at this site.

 Environmental Simulations Inc. has a list of connections to groundwater modeling software sites. Intera Inc. is another commercial site with links to public domain hydological software. They als have an excellent Software Index containing descriptions of over 250 software packages of interest to hydrologists, including groundwater models and geostatistics.

Storm Water Management Model (SWMM) for Dos and (SWMM) for Unix is by the University of Oregon and the EPA. It is a comprehensive water quality simulation model developed primarily for urban areas. It includes single event and continuous simulation for all components of rainfall, runoff and quality cycles for a watershed.

ASCE Software Links to Seepage and Groundwater Modeling Software. Web users can add their own link (with a description) to this page. Links to BOSS International, EarthSoft, DoD Groundwater Modeling Software, EQ3/6, US EPA Groundwater Software Modeling, plus many more.

The University of Manitoba Groundwater FTP Site has a number of shareware programs available.

 Washington State Dept. of Ecology's Environmental Investigations and Laboratory Services Program have developed and made available several Lotus and Excel 5 Spreadsheets for various groundwater water quality and dilution calculations. Included are DOSAG2, IDOD2, NH3FRESH, NH3FRES2, NH3SALT, PHMIX2, RIVPLUM5 and WQBP2.

Richard B. Winston's Home Page has an extensive collection of links to software for groundwater modelling.

 The Earth Environment Science Center, or EESC, maintains a collection of links to assorted hydrology software and models.

 The Hidrosoft home page has links to many water related freeware, shareware and commercial software for hydraulics, hydrology, water resources and environment.

Sedimentary Geology

Sedimentary Geology from Penn State develop and freely distribute some of their own software. The Physical Sedimentary Lab has SSM (simulating clastic sedimentary basins), GOLEM (geophysical lanscape evolution model) and MIDAS (model investigating density and size sorting).

 FUZZIM (stored as a binhexed self extraciting archive) are Macintosh programs for simulating large scale marginal deposition and erosion for long geological time spans. It uses "fuzzy logic" for controlling the distribution of sediment. The idea behind the program came from the Int. Ass. of Mathematical Geology Meeting in Canada in 1994. It was written by Ulf Nordland and Magnus Silfversparre of Uppsala University, Sweden.


Thin Plate Finite Element Code developed by Peter Bird at UCLA since 1976 can be used to model the deformation of the lithosphere, form new tectonic hypotheses, estimate long term seismic hazards and study plate rheology. You should also mail Peter to let him know which files you copied and to be placed on the mail-list for updates. Fortran source code is available.

 PaleoMag software for the MacIntosh by Craig Jones. It supports orthorhombic, equal area and J/J0 diagrams (total and component) of individual sample demagnetisations, least squares fit of lines, planes, circles to parts of demagnetisation curves. Email Craig to be placed on the mailing list for updates. The same software, plus an html-ised manual etc has been placed on a Web Server.

 Seismic CWP/SU Package is geophysical seismic code for Unix machines from the Center for wave Phenomena.

 The World Paeo-Magnetic Database are databases and programs related to paleomagnetism.

 COGS does have a Geophysics directory.

 The IRIS Software Exchange Library has geophysical software for various platforms, including IBM pc's, Sun unix workstations and Macs. Under pc's is SEISMIC (to display hypocenters of earthquakes for various map views from 1966 to the present) and SUDS (Seismic Unfied Data System). Under Sun are SUDS, Seismo_Display, css2sac, evt2sac, evalresp, focmec, neic2tf and relish.

 Gordon Cooper has made available is Geophysical Software as freeware. Software is for Dos, and is useful for teaching. The arj program is required for de-archiving. Software includes mag2dc (magnetics forward modeling), grav2dc (gravity forward modeling), geomodel (simultaneous magnetics and gravity forward modeling), VES (Schlumberger resistivity and modeling), signproc (profile data filtering), pfproc (map filtering - strike filters, derivatives etc) and gravmap (map data filtering - continuation, polynomial surface fits etc).

 Dan O'Connell of the Seismotectonics Group of the U.S. Bureau of Reclamation has written and made available his Epic3 software. This is Unix software to read the event CD-ROMS (version3) from NEIC (hypocenter associated data and the NEIC event catalog).

 WinQuake by Larry Cochrane is a program to view and analyse Public Seismic Network and SAC binary files. It uses Jeffreys-Bullen table for travel times and depth. Both Windows and Win95/Win-NT versions available.

 Seismic Duck is a high performance graphical seismic simulation and game. It displays sound waves travelling underground. It is freeware by Arch Robison. It requires a PowerPC Macintosh with 256 colors, 4Mb free RAM and MacOS 7.1 or later.


The following numerical models for oceanography are all for Unix workstations:

 Princeton On-Line Model or POM is a sigma coordinate free surface, primitive equation ocean model for Unix. It is distributed free to tertiary institutions for research purposes. The code is available from the ftp server.

 The Modular Ocean Model, or MOM, is a primitive equation general ocean circulation model for exploring ocean and coupled air-sea applications over a wide range of space and time scales. The MOM 2 source code and documentation is available.

 The Semi-Spectral Primitive Equation Model, or SPEM, is a 3D ocean circulation model for a variety of studies. It uses horizontal boundary-fitted orthogonal coordinates, a vertical bathymetry following sigma coordinate and solves 3D primitive equations. Source code is available.

The University of British Colombia has links to assorted numerical models (including the above) for oceanography. Look for the sections On-Line Numerical Models and Source Code for Models Not Mentioned Above. Model include FRAM, ECOM-si, POP, Spectral Element Shallow Water Equation Model, Box Basin and Massively Parallel versions of Miami Isopycnic Coordinate Ocean Model, MOMA, OCCAM/NWO and MICOM.

 LinkWinds version 2.1, (Linked Windows Interactive Data System) is a visual data exploration system which runs on SGI platforms under IRIX 4 and 5, and Sun under Solaris 2.4/

 XTide is a Harmonic Tide Clock and Tide Predictor software by David Flater, witten for unix (x-windows) and is freeware. You do need to supply harmonic constants if your locale is not on David's list.

 Then Ocean Color web site is a section of the GSFC DAAC. They have software which uses data from visible light bands from satellites and aircrafts to measure ocean features. Two main parts, CZCS and SeaWiFS. Included are: Coastal Zone Color Scanner, or CZCS, related software includes SEAPAK, the data processing software, plus software to read DSP, CRTT and HDF files, and a collection of user contributed tools, and SeaWiFS related software includes SEADAS processing and image analysis software for HDF data, and SEATRAK - orbit prediction software.

 Map Ocean Data, or MOD, is Windows based freeware to view oceanic data in a geographic context. Get the file You will also need vbrun300.dll.

 Phil Morgan has developed the SeaWater library of MatLab routines for calculating the properties of seawater. They run on all computers that support MATLAB and is freeware.


Geostatistics software at the Inst. of Mineralogy at the University of Lausanne, carries the US EPA GeoEAS geostatistical program (Dos), a geostatistical tool box (Dos) and VarioWin, a windows set of programs for 2D spatial data analsysis.

 The StatLib Archives has an extensive collection of statistical software and algorithms. It is divided into a number of catagories based upon the resources origin, eg apstat is for algorithms from Applied Statistics, cmlib is the Core Mathematics Library from NIST which has fortran code for lots of statistical and numerical procedures, griffiths-hill has applied statistics algorithms contained in the book by Griffith Hill, multi has an annotated directory and selected algorithms on multi-variate analysis and clustering.

 The Netlib Archives repository at UTK and ORNL carry a very extensive collection of mathematical software. Some of the categories include image, linpak, voronoi, fftpack, scilib, graphics and gnu. It is also possible to do an Attribute/Value Data Base Search of the Netlib repository.

 Numerical Recipes for Pascal are available from the Garbo archive. Get the file Be warned, this is over 300 Kb compressed and 772 Kb uncompressed. The code is an early version with over 400 routines, but they still work, and can be converted easily to C or Fortran.

 Software for Mathematical Geology is located at Houston University.

 The Sibyl Database is a searchable database of information on statistical software.

 The geostatistics directory from the Hydrosystems ftp server has assorted geostatistical software.

 The Anon Web Site at the University of Houston, Texas, is directed at those with an interest in mathematics, computing and geosciences. They have a great list of Software and Modeling Resources page.

 GSLIB is fortran code of geostatistical software from Stanford University. It is written by C.V Deutsche and A.G. Journel. This is a .tar.Z file.

 Dave Watson's home page has descriptions of Delauny triangulation, contouring and other related matters. C source code for delauny tessellations and access to Time Series Prediction software (Dynamical Data Determinsitic Detector).

 Scientific Applications on Linux, or SAL, has links to assorted mathematical, statistical, graphical software packages and libraries.

 The Numerical Methods links by Tomasz Plewa has an extensive list of links to assorted packages, libraries, centers and other sites.

 The software supplements for Numerical Methods for Mathematics, Science and Engineering by John Mathews contains the fortran code. Read the readme.for file for copyright and permission notice.

 Phil Ingram has made available a number of his statistical programs for Dos machines. Included are USTAT which is a collection of procedures for uni and bivariate analysis of data; MSTAT which is a collection of multivariate procedures; KSTAT which has geostatistical procedures (variograms and block kriging) for grade/tonnage calcluations of ore deposits; and finally SSTAT which is a collection of procedures for the generation and analysis of gridded data.

 Dubois Gregoire maintains the Geostats Software FAQ. It is a description of the freeware and commercial software for Dos and Unix commonly used for spatial data analysis, plus links.

 Assorted Fortran Libraries for various mathematical procedures of potential use for earth sciences is available at U. Car's ftp server. Includes such things as minpack, linpack, lapack, spherepack, fftpack, fitpack.

 Geostatistical Software for the PC has links to VarioWin, plus the VarioWin FAQ, GeoEAS by the EPA and Roland Froidevaux's Geostatistical Toolbox. There is also a link to the Unix version of GeoEAS. The OnLine Documentation for Unix GeoEas is available from the U. of Toronto.


AgriMensor is a tool for the processing and displaying of DEM's under MS Windows. It is aimed at geophysicists and archaeologists.

GIS and Mapping

Sections 6.3, 6.4 and 6.5 mainly deal with specialised mapping and GIS techniques and software, of which I know very little. Consequently, I took the reference to these sites from Bill Thoen's ORES, figuring that his judgement will be better than mine on these subjects.


An assortment of Dos software for GIS and mapping, cartographic transformations, raster to vector conversions and so on. It includes programs like skmoss (replaces 4 programs in pcmoss), gctpc (Dos version of general cartographic transformations), las (land analysis system), pcglis (pc version of glis), dcw2dxf (dcw to dxf conversions) topo and xglis. The site is maintained by Sol Katz.

 Shareware for GIS software links are provided by the University of Waterloo. This includes links to a number of freeware and share software related to GIS.

 The Generic Mapping Tools is Unix software developed at the School of Ocean and Earth Science and Technology at the University of Hawaii by Paul Wessel and Walter H. F. Smith. It contains about 50 tools for map projections, spatial interpolation, contouring, 3-D perspective views, and data manipulation. Source code is in Kernihan & Richie C is designed for Unix machines. The latest version is 3.0. The GMT page gives details on obtaining it from one ofe several sites.

 Topographic Analysis is fortran source code.

 VPFView 1.1 is Unix software to view DCW data from the DMA's Digital Chart of the World CD-ROM data set.

 GRASS GIS is a public domain GIS and image processing system for Unix developed by the US Army Corps of Engineers.

 MAPGEN/PLOTGEN is the code for a public domain graphics system. The files are compressed-tar source files. Files include: graphics-?.?.tar.Z: device independent vector graphics system employed by the Mapgen/Plotgen system; mapgen.?.?.tar.Z is the mapgen/plotgen system for plotting geographic and other data (requires pre-installed 'proj' and 'graphics'); xzoom.?.?.tar.Z is the previewer of mapgen/plotgen graphic data.

 The National Geophysical Data Center ftp server has a number of Dos based generic data analysis, display, compression, archival and retrieval tools. Software includes FREEFORM, GeoVu and GeoDas.

 The USGS Cartographic Software by the National Mapping Division of the USGS provide data and supporting software for the national series of base cartographic data. The software are for a variety of platforms.

 The Software Archive from Institute of Biogeography has descriptions and links to Windows based GIS software (shareware and freeware). Included are GeoVu, Oz GIS 4 Windows, IDRISI Modules, Fragstats, Surface Interpolator, US 3D Atlas, Landscape Explorer, Map Make and GADS.

 COGS has a number of directories relevelant for GIS and Mapping, including Landsat, MOSS and Mapping directories.

 Maynard Riley maintains the software links in the Land Surveying and Geomatics Page. This has links to assorted software related to surveying, mapping, coordinate conversions, DEMs.

 The Geography and GIS section of Thoen and Smith's ORES resource has a page on data and software for GIS. Also at this site is the Map Info Support Page with access to free files, the FAQ etc.

 ESRI have made available ArcView 1.0 for Windows on their ftp server. Be sure to read the license agreement.

 The SSEC Visualisation Project at the University of Wisconsin-Madison has developed and made available two visualisation software. These are Vis5D and VisAD. Both are for unix workstations and execuatbles for a number of workstations and source code is available. The software would be useful for atmospheric and ocean models.

The GIS Software at the USGS has the catagories of Geologic Visualisation for the PC, General Cartographic Transformation Package and the Mapping Science Software from the National Mapping Division. This has links to Cartographic Applications Software, GLIS client access software, ATSys (Aero-Triangulation System Software), RevPG (Digital Line Graph editing, Symbolized Display and Plotting Software), and finally public domain software for use with the USGS Digital Geospatial Data, which includes IMDISP, DLGVIEW, DLGTODXF and CHOP.

MultiSpec is an image processing system for interactively analysing multispectral data such as Landsat or hyperspectral data from AVIRIS Imaging Spectrometer. It is wirtten for the Macintosh and Power Mac by Larry Biehl and the Laboratory for Applications in Remote Sensing at Purdue University.

GSNAKE API are software tools for Unix for contour modeling, extraction, detection and classification based on the Generalised Contour Model. It was developed by Information Technology Institute and the School of Applied Science, NTU, Singapore. There is also an alternative site.

 Surface2 is gridding/contouring/3D surfaces software for Windows. It is written by John Coulthard and is shareware.

 NIH-Image is really good public domain image analysis software for the Macintosh.

 TMap21 is shareware Win95 and WinNT software by Yiping Song. It is designed for terrain surface modelling, taking spatial data, contour data or grid data and generating 3D spatial models. Three models are supported: Triangulated Irregular Networks (TIN); Contour Model; and Digital Elevation Models (grid model).

QuikGrid QuikGrid v3.1 is a Windows 3.1 shareware program by John Coulthard. It will read in a set of x-y-z surface points, generate a regular grid and display the surface as a contour map or as a grid. The display may be zoomed, printed, output to a DXF file or in the ER Mapper raster format. It will generate a 125x125 grid from 16,000 data points. It is also available at SimTels FTP mirror site.

Remote Sensing Software section of Bill Corner's RS Resources on the Web has links to various commercial and public domain Remote Sensing related software.

Scott Loomer has made available his MicrCAM software for Windows.

 AGIS 16-bit and AGIS 32-bit are shareware applications for Windows 3.x and Win95/NT. AGIS is a mapping and simple GIS application. A large number of map and data layers are possible, new symbols can be added, a number of projections are supported and more.

Cartographic Converters and Transformations

The Map Projection Software Page has links to many map projection software.

 The General Cartographic Transformation Package is the c code for various various cartographic conversions such as Lat/Long<-->UTM. The C code was originally written for Unix. An older version in Fortran 77 is also available, and this is GCTP-II. Another site for UTM<-->Lat/Long conversion software is at NOAA. This software supposedly allows for batch processing.

 PROJ.4 is a Dos and Unix program for various cartographic projections and conversions, including geographic or grid databetween Nth American Datum 27 and 83 plus SPCS & UTM coord systems for the US regions. Included here is the source distribution for for the programs PROJ, GEOD and NAD2NAD (for Unix, but adaptable for Dos), the Dos executable for Version 4.3.3, other sundry files, plus the PD.projections.FAQ. Get the README file for a description of what's there. The EPA's DBF Utility Package, (v5.5), is a set of programs for converting between INFO and DBF as well as INFO and ASCII, DBF to point coverage. They are programs tested on a number of Unix platforms, and run with Arc/Info 6.1.1 or 7.0.2. The complete source code is also available.

 John Banta's SeisSoft Co. has a shareware coordinate transform package for Windows. It will convert between Lat/Long and X/Y anywhere in the northern hemisphere using the U.T.M. projection, and anywhere in the U.S. using the US State Plane projections.

 SPCS83 is a PC program written by the National Geodetic Survey for converting from Lat/Long to State Plane Coordinates (and back). Fortran source code is here. Another subdirectory is UTMS which has source and exectuable to converts GPS to Universal Transverse Mercator coordinates and vice versa for the NAD27 and NAD83 Datum.

Wizvax Communications ftp server has assorted Dos based programs for various conversions involving Lat/Longs, UTM grid coordinates and the like. Included are inverse, direct, rule2ll, ll2rule and utm2ll. All are zip files.

 TLCPack is a fortran library of 8 programs for transferring values between 1, 2, 3 and 4D arrays. They can be used on uniform and non-uniform orthogonal grids for doing a 're-gridding' procedure. Linear and cubic interpolation can be selected independently in each dimension.

 Another freeware UTM-lat/long converter is UTMCON by Malcom Drury. This is in ZIP format.

 Gencoord is free coordinate and data transformation software for Windows 95.

Arc/Info AML Code

Various AML codes for ARC/INFO can be found at the following sites: AMLs for ARC/INFO 5.0, 6.11, AMLs for GIRAS data and yet another AML site, plus an AML for PC Arc/Info.

 ESRI's ftp server also contains AMLs and SMLs.

Digital Elevation Models (DEMs)

MicroDEM, Pascal programs to do things with DEM data (shareware).

 Spalt at Indianna or Spat an NIC. SPLAT is contouring software. Get the file SPLATSFX.EXE which is a self-extracting archive.

 GRIDPAK 4 is 3D gridding software. Written in C, it has more makefiles and uses mud2 version 2. Other applications include XCOAST2 for drawing grid boundaries on the (?US) coastline, based on xfig. There are fine and coarse resolution coastlines for xcoast. Also etopo5, bathymetry/topography data.

Specialised GIS/Mapping/Imaging Techniques

GeoTIFF v 1.0 is a new file format and specification. It represents a collaborative effort by various remote-sensing and cartographic raster data providers and software vendors (Arc/Info, Erdass, USGS, SPOT, MapInfo, JPL/NASA) to establish a standard for geographically orientated raster format data interchange using standard TIFF tag extensions. Beta GeoTIFF software using the public domain LIBTIFF package is also available for testing.

 The Spatial Data Transfer Standard, or SDTS, is a a robust way of transferring earth-referenced spatial data between dissimilar computer systems.

 The Graphics File Formats Home Page has descriptions of just about every graphics file format known. Some code is also available. The archives and the FAQ can be searched.

 The SaGA Toolbox is a collection of Spatial and Geometric Analysis tools for MatLab by Kirill Pankratov. The loolbox deals with geometry and planar, spherical, three dimensional and multidimensional data.

 Point in Polygon, Fastest Point on Polygon test by Eric Haines, in Ray Tracing News, v5, no.3, Sept, 1992.

 Voroni Tesselations source code in article Spatial Data and the Voroni Tesselations in Dr. Dobbs Journal, Dec. 1992.

 Linear Time Algorithm Program, the DOS executable of the code published in IJGIS, 1993, Vol. 7, No. 6. Retrieve the file CHITVD.ZIP. Documentation in CHITVD.DOC.

 Theissen Polygons, C source code for calculating the vectors for Theissen Polygons.

 s.voroni: the GRASS module.

 MinMaxer from NCSA is a triangulation method that does the Delauny Triangulation.

 QUAD.ASC is source code for image processing using quadtrees. It includes unpublished source code and input data which accompany's Ray Dash's article using quadtrees for raster-image processing.

 ImgStar is a suite of image processing tools. It is intended to be used in conjunction with Jef Poskanzer's pbmplus toolkit of conversions. ImgStar is written in c for Unix by Simon Winder.

 Wm. Randolph Franklin has on the Web the Fortran source code for a Point Inclusion in Polygon Test. This is an expansion of his answer in the FAQ (question 17).

 Triangle<.a> is freeware by Jonathan Shewchuk. It is a 2D quality mesh generator and Delauny triangulator. It is capable of generating exact, constrained and quality forming Delauny triangles. If your interested in this, then you should also visit NetLib's index for Voronoi and Delauny Triangles


Xerox's ftp site is described by Bill Thoen as a goldmine for Map Datasets for DEM, DTM, TIGER data exchange for all kinds of public domain map data.

 The EROS Data Center has 1:100,000 and 1:2,000,000 Digital Line Graph land use/land cover and 1:250,000 Digital Elevation Models of the U.S.A. There are also numerous Arc/Info coverages and AML's.


The Plot Directory at Oakland (or the Plot Directory Web Site) of the Simtel.Net OAK Repository, has plotting programs for geoscientists. Included are: - Graphica scientific graphing program is great; For piper and ternary plot programs get the files and Try searching for these at Oakland's Web server (see above).

 A general binary and ternary plotting program for Dos is available as

 The Software for Graphics and Data Analysis is a collection of links to software and tools collected by S. Baum of texas A&M University. It is biased towards the Linux operating system. The main links are to: Graphics, numerical analysis, Data Formats and Commercial Packages. It also has links to Symbolic Mathematics, GUI development systems, wavelet software/information and spectral analysis.


Rockware Inc. web page has a Products Catalogue and price list of geoscience software they market.

 Watermark Computing web page has a description of its PEST software suite for model-independent non-linear parameter estimation.

 Jim Nelson has been developing his Basin Delineation software since 1990. It runs under Unix or MS-Windows. There is a free demo version as well.

 ADEPT is a program for aquifer data evaluation by C.H.E.S.S. Inc. Information can be obtained from this site. There are also links to other hydology servers.

 Silverplatter Products on the Internet. Silverplatter produce and market a number of data-bases on CD-ROM. One of these, Geo Ref, is of interest to geoscientists. You can download a trial version or obtain a guest account.

 Statistical Analysis of Natural Resources, or SAND, concentrates on geostatistical analysis in reservoir delineation and evaluation. Software includes CONTSIM, HAVANAH, SEQUENCE and HORIZON. They also have links to other sites for geostatistics, statistics and stochostic models.

 Strategic Mapping Inc. develops and markets the Atlas range of GIS software products for Dos and Windows. A demo copy of the Windows version is available. Info on the AGIS-L, Atlas GIS user group, plus other internet GIS connections.

 Oliver Weatherbee at Uni of Delaware has a GIS Software Listing of Commercial Packages. There are also some shareware links as well.

 A visualisation package apparently used alot by oceanographers is MatLab by Mathworks. This site has product description plus News and Notes, FAQ on MatLab, technical questions and user contibuted M/MEX files.

 Kovach Computing Services develops and markets geoscience statistical software for Dos and Windose. Shareware versions are available. Included are Oriana (circular statistics, rose diagrams), MVSP (multivariate statistics) plus others.

 IntelliGIS provides GIS Unix and Dos products for the petroleum industry.

 Digital Land Systems Research specialise in raster PC based GIS software. They develope the SAGE GIS system which includes Sage GIS, Capture, Cartographer. Software also imports/exports to/from many popular packages. Demo software is available.

 Lynx Geosystems develop and market for PC and Unix mine planning software and the Lynx Geoscience Modeling System.

 Petroway Inc develops software for the petroleum industry. They have made available demo copies of two of their products, Automate for Windows which is well test interpretation software, and WinBOAST, black-oil simulation software.

 The ECGL at Brigham Young University market other software besides the GMS. Included are WMS (a Wateshed Modeling System), FastTABS (hydrodynamic modeling system), FastSEEP (automatic seepage modeling) and Surface-Water Modeling.

 Able Software Co. produces tools for GIS and mapping. R2V for Windows is a raster to vector conversion package for GIS and mapping applications. A demo copy is available, plus a link to their discussion list.

 ConSolve Inc develops advanced software products for scientists and engineers. SiteView is a Windows 3D visualisation of spatial data. Demos are available.

 Golden Software Inc develop Surfer, Grapher and Mapviewer for Dos and Windows. Demo versions of their software is available.

 Landmark Graphics Corp is a supplier of exploration and production info-systems and services (Unix and PC's) for the Petroleum industry (seismic, well logging etc). The FTP Archive Index Page is product support for their customers.

 Pangaea Scientific is a software devoloper for the Earth Sciences. Its products, mainly for Dos and Windows, include SpheriStat (orientation analysis), GMM (geological map maker), Quake (earth quake modeling), Parallax 3D (3D modeling), MetPet (metamorphic composition and reaction calculation.

 The National Center for Atmospheric Research (NCAR) have developed and sell a graphics/mapping program for 2D and 3D visualisations called NCAR Graphics. It is for for Unix boxes. For more information on the various versions, see: for Version 4.0 and for Version 3.2.1/.

TCI Software develops software which caters specifically for Autocad Map makers. AutoCad Mappers is a hot list of other sites of interest to Autocad map makers.

 Geosoft a computerised mapping company in the UK. They produce a suite of toolkits for mapping application development in MS Windows.

 MathSoft produce the S-Plus Spatial Statistics software suite. It is designed to analyse Erath Science data in areas such as the environment, mining, petroleum engineering, geography and demography.

 WASY Ltd have developed, amongst other software, FEFLOW which is a finite element subsurface flow system for Sun and Silicone Graphics workstations.

 Wolfram Research are the makers of the mathematical library Mathematica. There is a demo version, plus a scientific visualisation gallery.

 Stephan's Technical Thermochemistry Web Page has links to the ChemSage family of software, including ChemGeo for geochemsists and geophysicists engaged in studying a wide range of environmental problems, and can handle a wide range of compositions from ambient to high temperatures and pressures. Free demo versions are available.

 ER Mapper is a powerful image processoing and mapping package now available for Windows 95 and Unix.

 PAZ Software sells assorted geological and paleontogical software for the Macintosh. Included are Counter, Well Plot plus others. GridStat is a 3D reservoir characterisation packed by Texaco Exploration and Production Technology.

 ViewLog Systems develop and market Dos and Windows software for geophysical data processing and groundwater modelling. Products include ViewLog (well log analysis), ViewSeis (seismic refraction system), ModView (a finite element model pre and post processor for USGS' ModFlow software), GridManager (a finite element modelling system) and a 1 D Analytical Contaminant Transport Model.

Applied Global Technologies develop and market the WinCAT GIS software for Windows. A freeware version of WinCat is available. This can display the USGS DRG and DOQ imagery files.

QUADConvert by Intermountain Digital Imgaging will take the 28 quadrant images for an LTWG Quad Lands scene and stitch them together into 7 fast format image arrays, complete with Rev.b header, in under 5 minutes.

 Water Resouces Consulting Services markets to HEC Software by the US Army Corps of Engineers. They also have links to various free software such as Desert, CePipe, TR-55, SWMM, and more. John G. Davis is an independent consultant specialising in computer applications in mining and geology, particularly software for exploration, resource evaluation, geostatistics and customisation and bespoke programming. Some products include GeoBASys (geological borehole analysis software), Vario96 (semi-variogram modelling), GridORE (block/grid ore reserve estimation), PolyORE (polygonal ore reserve estimation).

Some companies have setup software supermarkets on the net. In the States you can visit Software Center and in Australia there is Professional Software Systems. Both sites have an extensive range of software, many with eductational prices.

GTGS provide software for the geotechnical industry. Their main product is an integrated database and presentation graphics system.

 Scientific Software Group is a distributor of hydrology, hydrogeology and geology software. Software includes USGS, EPA and privately developed models for ground water, surface water, parameter estimation, coastal area, geochemical, watershed, risk assessment and geostatistical.

Boss International develops and markets a wide range of civil and environmental engineering software.

Prosoft specialises in CASD tools for RISC-UNIX, Intel-NT/Unix/Win/Dos, and AVPC for Sun, SGI and NT. It also has an extensive range of software for academic purposes. Boss International is a recognised world leader in the field of civil and environmental engineering software, with products for hydraulics, hydrology, water resources, groundwater modelling and surface modelling.

 Visual Explorer is a landscape visualisation system with capabilities of wire frames to virtual reality, QuickTimeVR to VRML, GIS to Terraforming. Digital terrain data can be imported from ASCII, USGS DEM, UK Ordnance Survey NTF, Japanese SEM, Vistapro DEM, and generic xyz formats. Exports to ASCII, Autocad DXF, Greyscale BMP, and PGM, NTF, Polygon optimised TIN and VRML2, Vistapro DEM and generic xyz formats, plus more.

 Harmonic Software has released SPT, a Signal Processing Toolbox or O-Matrix. It provides a broad, extensible set of functions and utilities that expands the capabilities of O-Matrix in digital signal processing.

 StereoPro is a stereographic projections package for Win95/NT. It has a spreadsheet like multi-document interface. Steregraphic options include Wulff and Lambert nets with both polar and equatorial representations. It was developed by Dr. Martin Walters.

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