Free GIS Software & Resources
GIS Software and Resources are listed in alphabetical order on the following pages.
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Comprehensive collection of GIS programs and tools that is updated daily. Most are either freeware or open-source. They are organized in alphabetical order.
gen2shp is a simple C-Progam which can read the format required by the ESRI ArcInfo generate command.
Gen2shp - 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 ... more
Generic Mapping Tools (GMT) is a collection of about 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. GMT supports 30 common map projections plus linear, log and power scaling, and comes with support data such as coastlines, rivers, and political boundaries ... more
GEO/Garnix free coordinate conversion and GPS communication tools ... more
Geocoding - Map Channels offers free single address and batch geocoding ... more
Geodetic software developed by the National Geodetic Survey (NCS). Free downloads - dozens of programs ... more
Geographic Foundation Class (GFC)Library 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. GFC also features abstractions of timestamps and time series which are useful in capturing the dynamics of spatiotemporal data. The R-tree spatial indexing is supported through the GRtree and related classes. 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.
GEOS (Geometry Engine - Open Source) is a C++ port of the Java Topology Suite (JTS).
GeoServer - GeoServer is an Open Source server that connects your information to the Geospatial Web. You can publish and edit data using open standards. Your information is made available in a large variety of formats as maps/images or actual geospatial data..
Geospatial Explorer has been written to enable geologists, environmental scientists, and engineers to apply innovative science and technology to enhance and expedite the reduction of risk to human health and the environment. Geospatial Explorer permits the user to identify, understand, and solve complex environmental problems better, faster, and cheaper.
Geographic Translator (GEOTRANS) 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.
geos (Geometry Engine Open Source (GEOS)) is a C++ port of the Java Topology Suite (JTS). As such, it aims to contain the complete functionality of JTS in C++. This includes all the OpenGIS "Simple Features for SQL" spatial predicate functions and spatial operators, as well as specific JTS topology functions such as IsValid().
Geospatial Data Abstraction Library (GDAL) - 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.
Geostatistics and Spatial Statistics
Geostatistical Analysis package that compliments Geospatial Explorer by providing an interface to the SAGE 2005 variogram reports and GSLIB 2.0 kriging and simulation executables.
Geo Tools is an open source (LGPL) Java code library which provides standards compliant methods for the manipulation of geospatial data, for example to implement Geographic Information Systems (GIS).
GeoTools is Java code library which provides standards compliant methods for the manipulation of geospatial data, for example to implement Geographic Information Systems. The GeoTools library implements OGC specifications as they are developed, in close collaboration with the GeoAPI and GeoWidgets projects.
GIS ObjectLand is a universal Geographic Information System for Windows. Free non-commercial license.
Geographic Translator (GEOTRANS) is an application program which allows you to easily convert geographic coordinates among a wide variety of coordinate systems, map projections, and datums. GEOTRANS runs in Microsoft Windows (95 and NT) and UNIX Motif environments.
<-- Free GIS Mapping Data.
<-- Free GIS Tutorials.
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