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Updated listing of free GIS mapping software. Download free GIS software and free GIS shapefiles to create your own GIS maps.
NRDB (Natural Resources Database) is a free database and mapping application for developing and distributing environmental databases. Its aim is to provide people in developing countries with a powerful yet simple tool to assist in the managing of their own resources.
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.
OpenDMTP, is a protocol and framework that allows bi-directional data communications between servers and devices (clients) over the Internet and similar networks. OpenDMTP is particularly geared towards Location-based information (LBS) such as GPS, as well as temperature and other data collected in remote-monitoring devices.
OpenEV is a software library and application for viewing and analysing raster and vector geospatial data. OpenEV is used by private companies, universities, governments and non-profit organizations around the world.
OpenGTS - The "Open GPS Tracking System" is the first available open source project designed specifically to provide web-based GPS tracking services for a "fleet" of vehicles.
OpenMap is a Java Beans based toolkit for building applications and applets needing geographic information. Using OpenMap components, you can access data from legacy applications, in-place, in a distributed setting. At its core, OpenMap is a set of Swing components that understand geographic coordinates.
Orbit EOS Lite Free GIS Map Server - EOS is the scalable, extenable Orbit Server system, used for corporate and internet GIS data sharing. EOS supports most popular data formats, and can be extended with functionalities such as geoprocessing or gis-data related database access and transaction control.
Orbit Explorer GIS Freeware - Orbit Geospatial Technologies presents Orbit Explorer Freeware 4.4 for Windows 32 and 64bit, 4.1 for Linux and Unix 32 and 64bit, and 4.3 for Mac OSX systems on G4, G5 and Intel Dual Core machines. The Orbit Explorer Desktop solution now comes with full OGC WMS supportover 50 new and improved functionalities.
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 spatial database for geographic information systems (GIS), much like ESRI's SDE or Oracle's Spatial extension. PostGIS follows the OpenGIS "Simple Features Specification for SQL" and has been certified as compliant with the "Types and Functions" profile.
Practical Map Server (PMS) is a geospatial software package that delivers
geographic content to web browsers and other compatible clients. PMS is written in Java. One source archive is temporarily available from the FreeGIS ftp
PrimaGIS is a mapping solution meant primarily as a spatial extension for Archetypes based objects. The idea is to allow existing Archetypes based objects to be presented on predefined maps and allow users to easily access this spatial information in relation to the primary information of the objects. PrimaGIS is not a standalone application, but builds on top of Mapserver, Python Cartographic Library (PCL) and Cartographic Objects for Zope (ZCO).
PROJ - 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.
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