Free Downloads


Atlas Atlas aims to produce and display high quality charts of the world for users of FlightGear, an open source flight simulator. This is achieved through two main parts: The map creator and the Atlas viewer. The map creator can also be used as a stand alone program that produces beautiful bitmaps. The Atlas viewing application can be used for browsing your maps but can also connect directly to FlightGear and display your aircrafts current location on a moving map display.
Cosmo Player
Free download to 3D enable your browser. Downloads available for Win95/NT, Win 3.1 and Macintosh (beta).
Graphic software
NCAR Graphics 4.2.2 NCAR Graphics Software is comprised of a library containing Fortran/C utilities for drawing contours, maps, vectors, streamlines, weather maps, surfaces, histograms, X/Y plots, annotations, an ANSI/ISO standard version of GKS, a math library containing a collection of 1,2,3-D interpolators and approximators, applications for displaying, editing, and manipulating graphical output, map databases, many FORTRAN and C examples.
TerraGear Converts a variety of geographic databases into triangle list scenery that is suitable for worldwide 3D viewing. The resulting database can be directly used by the Atlas package.
VTP Virtual Terrain Project, it writes and supports a set of software tools (VTP Toolbox) and an interactive runtime environment (VTP Enviro).  The tools and their source code are freely shared to help accelerate the adoption and development of the necessary technologies. The goal of VTP is to foster the creation of tools for easily constructing any part of the real world in interactive, 3D digital form.
Vis5D is a system for interactive visualization of large 5-D gridded data sets such as those produced by numerical weather models. One can make isosurfaces, contour line slices, colored slices, volume renderings, etc of data in a 3-D grid, then rotate and animate the images in real time. There is also a feature for wind trajectory tracing, a way to make text annotations for publications, support for interactive data analysis, etc. GRASS can import and export Vis5D raster data.
is intended as a central repository for enhanced versions and development work on Vis5d.

Text Editors

Text Pad
Ultra Edit


The fluid flow calculations website  provides online calculations on Flow in pipes, open channels, hydrology, groundwater. Liquid, gas, water, air. Venturi, nozzle, orifice flowmeters. Weirs, flumes. Pipe networks, water hammer. Bernoulli, Manning, Moody. Culvert design, inverted siphon. Pressure, flow, discharge, sizing. Tank volume, unit conversions.


BBBike A route-finder for cyclists in Berlin and Brandenburg (Germany). BBBike can be run as a stand-alone program or as a web based component. Display a map with streets, railways, rivers, parks and other features and find routes between two points. The route-finder can be customized to match the cyclists preferences (fastest or nicest route, keep wind direction and hills into account etc.)

DGPSIP A methodology to send differential GPS correction data over the internet

Grid In Quest  A simple 3D datum transformation from WGS84 (ETES89) to OSGB36 British National Grid.
GPS Manager (GPSMan) is a graphical manager of GPS data that makes possible the preparation, inspection and edition of GPS data in a friendly environment.
GARNIX GARNIX is a communication program that provides data interface between an MS-DOS computer and a GARMIN GPS device. GARNIX interfaces with GEO for coordinate conversion and is configurable for various GARMIN GPS receivers.
GPS3D is a collection of utilities to manipulate a handled GPS device from your PC, and visualize the result in 3D. Even without a GPS device, you can still use gps3d to play interactively with a 3D texture mapped model of earth.
GPSS Global Positioning System Software, “sort of free”  supports a variety of countries and languages
gpsd is a user land daemon acting as a liason between a gps or Loran-C receiver and clients. Operating System: GNU/Linux and other Unices
gpspoint Program to download and upload waypoints, routes, and tracks to and from your GPS device. Upload and download is possible via the GARMIN interface. Current position obtainable via the NMEA Interface, supported by most GPS devices.
The gpsutils package covers some small applications to capture and convert data from a Garmin GPS receiver. These are based on a included more general GPS library (in C).
GPStrans is a program which allows track, route, and waypoint data to be transferred to and from various Garmin GPS. (Orig. site:, old homepage:

JEEPS 0.1.3  is intended as both a library and a development system for GPS and related software. It consists of documented C functions for communication with GARMIN GPS devices and for post-processing of the information received. It also contains functions for conversion of datums using Molodensky and Cartesian methods and mapping functions including transverse mercator projections. The UTM coordinate system is implemented as are other more parochial systems including the UK Ordnance Survey national grid (with map codes). Eighteen map projections and their inverses are given. NMEA data capture routines are included. An application (program) is distributed with the library in order to show the library functionality and how to use it.

Mayko maykoball14.gif (595 bytes)map lets you display digitized maps. A connected GPS, will plot your position on the map. This program is for Linux, a UNIX like operating system.
MIT OrthoServer  is a set of components that serve large collections of geo-image libraries online, in a seamless, multi-resolution fashion. This webpage provides you with step-by-step instructions for setting up and customizing your own MITOrthoServer, enabling you to provide your customers with easy access to your geospatial data via the Internet.

PyGarmin is a set of Python classes which implement the protocol used by Garmin GPS receivers to talk to each other and to other machines. It is based on the official protocol specification.

wayp2s A simple C-Program which can read a Waypoint+ file. The data in this file will be converted to shapefile format.

Remote Sensing

Geomatica™ FreeView  the new viewing environment for working with a variety of data, including imagery, vectors, and graphical bitmaps. FreeView allows the viewing, enhancing, and examination of remotely sensed imagery such as LANDSAT, SPOT, RADARSAT, ERS-1, NOAA AVHRR, and aerial photography. Use FreeView to overlay GIS data and view the associated attribute data.
GDAL1.1.5 GDAL is a translator library for raster geospatial data formats. As a library, it presents a single abstract data model to the calling application for all supported formats. A initial skeleton of GDAL has formed, and operates for a few formats.

libgeotiff is a library normally hosted on top of libtiff for reading, and writing GeoTIFF information tags. The library offers a standard C API. An effort to establish a TIFF based interchange format for georeferenced raster imagery.

MB-System MB-System is a package for the processing and display of bathymetry and backscatter imagery data derived from multibeam, interferometry, and sidescan sonars
MITAB MITAB is a C++ library to read and write MapInfo .TAB (binary) and .MIF/MID files. It is based on the OGR library which is an implementation of the Open GIS Consortium Simple Feature specification.

PROJ4.4.3 This package offers commandline tools and a library for performing respective forward and inverse transformation of cartographic data to or from cartesian data with a wide range of selectable projection functions. O.S. :GNU/Linux and other Unices Windows


ArcExplorer   Free GIS Data Viewer. This application allows basic mapping and spatial querying. Environments: Windows 95/98, Windows NT.

FreeLook 3.1
freeware program providing basic image viewing capabilities, by ENVI (available for PC, Macintosh and UNIX environments)
FMaps  user friendly opensource GIS/RS (Geographic Information System/ Remote Sensing) application on the
Linux and Gnome compatible platforms.
FlowMap  application designed to analyze and display flow data. Developed at the Faculty of Geographical Sciences of the Utrecht University in the Netherlands. Platforms: Windows 3.11/95/98/NT/2000
FREEMA A software dedicated to making free digital maps. 

GeoTools Java based mapping toolkit that allows maps to be viewed interactively on web browsers without the need for dedicated server side support
GEO is a scriptable coordinate conversion tool. GEO converts lon/lat, ECEF und TM (Gauss-Krüger) coordinate systems and is fully configurable.
Grid Grid is a perl extension for raster-based GIS work. The tool is developed to support hydrologic and water resources GIS work
GeoConsult and GeoContext  freeware tools for developing GIS projects and distributing them respectively
GMT collection of ~60 UNIX tools that allow users to manipulate (x,y) and (x,y,z) data sets (including filtering, trend fitting, gridding, projecting, etc.) and produce Encapsulated PostScript File (EPS) illustrations ranging from simple x-y plots through contour maps to artificially illuminated surfaces and 3-D perspective views in black and white, gray tone, hachure patterns, and 24-bit color.
  is a raster-based GIS, vector GIS, image processing system, graphics production system, data management system, and spatial
modeling system. Environments: Linux, Sun Solaris, Silicon Graphics Irix, HP-UX, DEC-Alpha, and Windows 95/98/NT

GISToolkit   is a java toolkit for building spatially enabled applications. There is an editor as a demonstration application to help test the capabilities of the toolkit. Works with GNU/Linux and other Unices, Windows, MacOS X
gen2shp is a simple C-Program which can read the format required by the ESRI ArcInfo generate command.
GIS Viewer 3.0 is a web-based Java tool for displaying and manipulating layers of geographical points and vectors, and raster data such as maps and images.

Hugo is a moving map software for Unix platforms. It can view maps in simple raster (XPM), vector, and TIFF formats.

iGMT (Interactive Mapping of Geoscientific Datasets) provides a graphical user interface for generic mapping tools (GMT) and is written in the Tcl/Tk computer language.  iGMT comes with built-in support for many different geoscientific data sets, such as topography, gravity, seafloor age, hypocenter catalogs, plate boundary files, hotspot lists, CMT solutions etc.
InovaGIS for Visual Basic GIS applications (from InovaGIS web site who develops free Geographic Information interoperable technology).

kdem is a program for displaying United States Geological Survey (USGS) Digital Elevation Models (DEMs). It offers a number if interesting features.

MapIt !  is a web-application that lets you navigate raster-maps through your web-browser and lets you zoom in and out and select objects and object classes that are identified on the map. MapIt! can be used as a CGI-Application and should work with all HTTP-servers.
MapObjects   a 90-day evaluation version. It is a FREE JavaBeans software component for viewing spatial data from ESRI.
MapInfo  Their  "Free" area contains an extensive portfolio of various software application demonstrations and resources. Visit Demos to get a quick view of MapInfo Products
MapInfo ProViewer  MapInfo's easy viewing tool designed to let you share your MapInfo Professional maps and analyses
with clients and co-workers.

MapView  with more analytical and editing power than most viewers, MapView qualifies as a GIS
magvar computes magnetic variation anywhere on (or above) the earth's surface, using either the WMM or IGRF reference models. Operating System: GNU/Linux and other Unices
MapServer3.3.011 The heart of MapServer is a CGI-based application for delivering dynamic GIS and image processing content via the World-Wide Web. The package also contains a number of stand alone applications for building maps, scalebars and legends offline.
MapServer Workbench0.3 MapServer Workbench is a suite of cooperative tools to build MapServer applications. The tools are written in Tcl/Tk, and use the Mapscript/Tcl interface.
MITAB is a C++ library to read and write MapInfo .TAB (binary) and .MIF/MID files. It is based on the OGR library which is an implementation of the Open GIS Consortium Simple Feature specification.

OpenEV is a library, and reference application for viewing and analyzing raster and vector geospatial data. Downloadable for  Windows 98/NT/2000, Linux, Irix or Solaris
OSSIM (Open Source Software Image Map) leverages existing open source algorithms, tools, and packages to construct an integrated tool for remote sensing, image-processing, and Geographical Information Sciences (GIS) analysis
OpenMap is a JavaBeans software component for viewing spatial data. JavaBeans is a component specification for software written in the Java language
OGR The OGR Simple Features Library is a C++ open source library (and commandline tools) providing read (and sometimes write) access to a variety of vector file formats including ESRI Shapefiles, and Mapinfo mid/mif and TAB formats.

PanMap from Pangaea in Germany, Windows and Mac

rmap generates images of the earth from a distance or fairly zoomed in. The code is a small C binary that reads a datafile of vectors to generate the image. The actual image is generated from the libgd library, which will either generate a gif, png,or jpeg based on the version of libgd and auxiliary libs you have

SDTS DEM  ArcView Grid Conversion Utility
sdts2dem This program dumps SDTS DEM modules to a data file which is supposed to reconstruct the original dem source file. OS needed are GNU/Linux and other Unices Windows
SPRING is a state-of-the-art GIS and Remote Sensing Image Processing system with an object-oriented data model. Provides integration of raster and vector data representations in a single environment. Platform : Windows95/NT, Linux, Solaris, HPUX, IRIX and AIX.
SADA(Spatial Analysis and Decision Assistance) free software that incorporates tools from environmental assessment fields into an effective problem solving environment

TARDEM A suite of programs for the Analysis of Digital Elevation Data. Download executables and open source code for Windows 95/98 and NT
TNTLite MicroImages, Inc. provides TNTlite as a free version of TNTmips , the professional software for geospatial data analysis. Product has all the features of the professional version, except TNTlite limits the size of Project File objects, and TNTlite enables data sharing only with other copies of TNTlite (export processes are disabled). Can either be downloaded or ordered on CD. Free hands-on, introductory training provided. Platforms: Windows 95/98, Windows NT.

vhclmaps 0.7  is a package of map viewers and spatial data servers that work with map databases

WHEAT   Windows-based Hydrogeologic Exploration and Appraisal Toolkit, is a suite of public-domain, user-friendly programs for computer-based mapping for natural resource investigations
World Map Data FREE World dataset in both ESRI shapefile format (including comprehensive attributes in dBase (DBF) format) and MapInfo file format  by BlueMarble Geographics co. images/new23x11.jpg (576 bytes)

Xplanet Xplanet was inspired by Xearth, which renders an image of the earth into the X root window. Azimuthal, Mercator, Mollweide, orthographic, or rectangular projections can be shown as well as a window with a globe the user can rotate interactively using OpenGL or Mesa. The other planets and some satellites may also be displayed.

zipdy for calculating the distance between two zip codes and finding all the records in a RDBMS with a zip code with x miles of another zip code


DEM2GeoEG is a program to convert USGS Digital Elevation Model (DEM) data into a VRML .wrl file that uses the GeoVRML 1.0 GeoElevationGrid.

Epi Info 2000  designed for the global community of public health practitioners and researchers. Both provide for easy form and database construction, data entry, and analysis with epidemiological statistics, maps, and graphs.

Geo-EAS 1.2.1  
is a DOS package that was developed by the US Environmental Protection Agency.
Geological Modeling and Reservoir Characterization Software
GEOSTAT Software

geoR & geoS Software for geostatistical analysis using R and S-PLUS©.
GEOTRANS2.0.1 (Geographic Translator) is an application program which allows users to easily convert geographic coordinates among a wide variety of coordinate systems, map projections, and datums. GEOTRANS runs in both Microsoft Windows (95/98/NT) and UNIX Motif environments.
Gstat Gstat is a program for the modelling, prediction and simulation of geostatistical data in one, two or three dimensions.

Isatis offers geologists and mining engineers a wide range of tools for mining data analysis, estimation and simulations of deposits.
ImageReg point and click image registration tool. It creates   World Tiff file sets suitable for import into any GIS that supports the format.

Plurigaussian simulations
for Sun Solaris, Windows and Linux version.

retep Graph Little Java library to create on screen and printed maps using vector based data. Primarily astronomically biased but can be used for any maps.

OGDI an application programming interface (API) that uses a standardized access methods to work in conjunction with GIS software packages (the application) and various geospatial data products. OGDI uses a client/server architecture to facilitate the dissemination of geospatial data products over any TCP/IP network, and a driver-oriented approach to facilitate access to several geospatial data products/formats.

Simbool boolean simulations (Sun Solaris version).
Simple Registration   Excel spread sheet that generates image registration data for your .tiff files.
Spherekit an integrated toolkit for spatial interpolation and comparison of spatial interpolation algorithms. It is UNIX-based and includes a complete graphical user interface (GUI). It uses Generic Mapping Tools (GMT) for display of interpolated fields.
SDTS++ is a C++ toolkit that programmers can use to write applications that can read or write SDTS datasets. Application developers can use SDTS++ library classes to work with the logical structure of these datasets without having to worry about the physical details of each dataset.

Spatial Statistics Toolbox for Matlab 1.1, 2.0images/new23x11.jpg (576 bytes)

The Geostokos Toolkit is a software application for the analysis of sample data which is located in two or three dimensional space. A demonstration Toolkit is available on request. The software is currently available in IBM PC (NT/95/98 and 2000) and will run under other systems with minor modifications.
an interactive height field generation and manipulation program, giving you the ability to generate random terrain and transform it
tsmApi The (Tile Set Manager (TSM) Application Programming Interface (API)) is an Open Source library of high level C functions for reading, writing, and processing the terrain data used by the TerraVision terrain visualization application.
tkgeomap is a set of Xlib extensions to Tcl/Tk for drawing and interacting with geographic maps.  

VARIOWIN: Software for Spatial Data Analysis in 2 D

WinCorpsCon  A coordinate conversion program from the Army Corps of Engineers.   (Windows Version.)

Avenue Scripts

ArcView 3.2 Avenue bugs Oregon (ODF) State Forests GIS Tool
ArcView 3.0a Avenue bugs
Oregon (ODF) State Forests GIS Tool
Arc Scripts/Extension
from ESRI
ARC/INFO Coverage for use in ER Mapper.
Functions Pack Extension for ArcView 3.2
ArcView Extensions 
The Minnesota Department of Natural Resources (MNDNR)
Autodesk MapGuide R5 Viewer
is an intelligent client that enables nontechnical users throughout your enterprise to interact with simple or complex maps
AutoSave AVX
is an ANSI C library that makes Arc/Info binary coverage's appear as ASCII E00. It can be used to read existing binary coverage's or create new ones. The library has been designed in a way that it can be easily plugged into an existing E00 translator that you want to extend to support binary coverage's. A OpenGIS WMS compilant web mapping server built around gnu/linux, python, apache and netpbm.

Columbia Mapping Extensions
Coulter Mapping Solutions
  (Water/Sewer/Storm Water/Gas GIS Editor, Electrical GIS Editor)
Comparison of ArcInfo Overlay Functions to XTools Overlay Functions Oregon (ODF) State Forests GIS Tool

DGNLib is a simple C library for reading vector data from Microstation DGN files (also sometimes known as ISFF format).

EDBS_extra is a ANSI-C program to process EDBS orders with ATKIS data. All data are stored in a "readable" format. EDBS is an exchange format primarily used in Germany.
is an ANSI C library that reads and writes Arc/Info compressed E00 files. Both "PARTIAL" and "FULL" compression levels are supported.

Forestry Tools   by Forest Resources Systems Institute (FORS)

Geographic Explorer It extends the Windows 95, 98, 2000 and NT Explorer to view and find map files. The Geographic Explorer provides
a number of powerful utilities. You can explore map files directly on your desktop with the Geographic Explorer!

Geographic Tracker AVX
Geographic Transformer AVX
GeoMedia Viewer
helps in Viewing and Analyzing data in either Microsoft Access or Arc/View Shape format, Load a Raster image and easily manipulate your map with zoom-in, zoom-out capability, and creates Thematic Maps.
Implemented in Avenue, can be directly incorporated into AV projects. Converts 2D or 3D ASCII data from one or more generate format text files to one or more (multi-part) shapefiles. Available as Extension or just Scripts. images/new23x11.jpg (576 bytes)
GFC is a set of C++ classes defining basic geographic data types, including points, lines, rectangles, circles, polylines, rings, complex polygons, rasters, and other atomic data types such as integer, real, varchar.  Several commonly used map projections are also provided in this library. A number of utility classes such as GXMLProcessor (for parsing XML files which are well-suited for transfering spatial meta data) and ESRI Shapefile reader are very useful for writing GIS applications. images/new23x11.jpg (576 bytes)

IMAGINE® Image Extension

JShape - Java GIS (software download and features)    

Land Tools
LIDAR Loader Extension

Microsoft Sitebuilder
MapInfo Raster Handler

PMAT    Pipeline Mapping and Analysis Tools
Production Surveillance
Projector ol
an ODF-developed ArcView Extension that allows the projection of spatial data between the Oregon Lambert projection
PMS Practical Map Server delivers geographic content to web browsers and other compatible clients. PMS is written in Java.
PostGIS adds support for geographic objects to the PostgreSQL object-relational database. In effect, PostGIS "spatially enables" the PostgreSQL server, allowing it to be used as a backend for geographic information systems (GIS).

Quantdec Extensions


Shape File to ERV Avenue Script  
ArcView Avenue script to export the active theme to ER  Mapper .erv vector format
Seismic Import System
Seismic Location Database System
Shape Projector AVX
SDTS DEM to ArcView Grid
Seminole County Extensions  
(GeoJPEG Extension, Image to Map Transformer Utility, Additional CAD File Utilities, View Tools Extension, ED Tools Extension, Linked Tables Identify Display Tool, Xtools View Extension)
Spatial Online
is a script that can be run from within the ESRI desktop GIS product ArcView to export a views contents to Scaleable Vector Graphic format.
is a simple C API for reading and writing ESRI ArcView Shapefiles. Simple sample tools are included. Python and Perl bindings are available.  

TerraSolutions Algorithm Tool A tool which makes it easy to export ER Mapper algorithms to ArcView. Available from TerraSolutions.
TerraExplorer: Version 2.06 for Win. 95/98/2000 (937K)
The Engine for ArcView
ThemeBooks AVX
The SW Modeler
extension for hydrologic modeling needs of Wyoming's surface coal mines and regulatory agencies.
The APR to JSHAPE extension

USGS Extensions (animal movements, spatial tools)

ViewPoint AVCatalog
ViewPoint Transporter
ViewPoint Retriever
ViewPoint TurboMap
ViewPoint Label Stacker
ViewPoint Route Labeler
Seismic Location Database System, ViewPoint AVCatalog, ViewPoint Route Labeler and much more, 30 days trail only.

Virtual Network Computing
Wessex / BLR Data
Windows Shape File Converter 
ArcView shape file to ER Mapper .erv vector file conversion utility for NT4 or Win95.
World Wide Web Access to ARC/INFO Databases
A simple C-Program which can read a Waypoint+ file. The data in this file will be converted to shapefile format. images/new23x11.jpg (576 bytes)

XTools Oregon (ODF) State Forests GIS Tool
Xtools Description
Oregon (ODF) State Forests GIS Tool
XToolsmh download.
Oregon (ODF) State Forests GIS Tool
XTools (zip file).
Oregon (ODF) State Forests GIS Tool