Home > Downloads > Open Source Software
Company Products | Data | GIS | GPS | Image Processing | Miscellaneous | Open Source | Photogrammetry | Scripts | Tools & Utilities

Free Open Source Software


The opensource GIS software's mentioned here are arranged in alphabetical order and are amongst the few popular categories that have maintained the standards set by OGC. This list is subjective and not exhaustive.
  • OSSIM Image Processing

  • deegree
    deegree is a free software initiative founded by the GIS and Remote Sensing unit of the Department of Geography, University of Bonn, and lat/lon.

  • GRASS
    Geographic Resources Analysis Support System, commonly known as GRASS, is an open source, free GIS software with many modules for raster and vector data manipulation, rendering images on the monitor or paper, multispectral image geocoding and processing and attribute management.

    The various features of GRASS is developed in a UNIX environment and is supported in many other systems using , Windows, MacOS X, Linux.

  • gvSIG
    gvSIG is a tool oriented to manage geographic information. It is characterized by a user-friendly interface, with a quick access to the most usual raster and vector formats. In the same view it includes local as well as remote data through a WMS, WCS or WFS source.

  • ILWIS
    The Integrated Land and Water Information System (ILWIS) is a PC-based GIS & Remote Sensing software, developed by ITC up to its last release (version 3.3) in 2005. As per July 1st, 2007, ILWIS software is freely available ('as-is' and free of charge) as open source software (binaries and source code) under the 52°North initiative (GPL license). This software version is called ILWIS 3.4 Open.

    ILWIS comprises a complete package of image processing, spatial analysis and digital mapping.

  • JUMP GIS
    The JUMP Unified Mapping Platform (JUMP) is a GUI-based application for viewing and processing spatial data. It includes many functions common to other popular GIS products for the analysis and manipulation of geospatial data. The JUMP also provides a highly extensible framework for the development and execution of custom spatial data processing applications.

  • MapWindow GIS
    The MapWindow application is a free, extensible, geographic information system (GIS) that can be used in many ways:
    • As an alternative desktop GIS
    • To distribute data to others
    • To develop and distribute custom spatial data analyses

  • PostGIS
    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 back end 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.PostGIS has been developed by Refractions Research as a project in open source spatial database technology.

  • Quantum GIS
    Quantum GIS (QGIS) is a user friendly Open Source Geographic Information System (GIS) that runs on Linux, Unix, Mac OSX, and Windows. QGIS supports vector, raster, and database formats. QGIS lets you browse and create map data on your computer. It supports many common spatial data formats (e.g. ESRI Shape File, geotiff). QGIS supports plugins to do things like display tracks from your GPS.

  • SAGA GIS
    SAGA – System for Automated Geoscientific Analyses- is a hybrid GIS software. The first objective of SAGA is to give (geo-)scientists an effective but easy learnable platform for the implementation of geoscientific methods, which is achieved by SAGA's unique Application Programming Interface (API). The second is to make these methods accessible in a user friendly way. This is mainly done by the Graphical User Interface (GUI). Together this results in SAGA's true strength: a fast growing set of geoscientific methods, bundled in exchangeable Module Libraries. The figure shows SAGA's system architecture.

  • Topology Framework .NET (TF.NET)
    TF.NET represents a managed topology manipulation API capable of handling managed objects representation of topological entities based on other popular APIs, exposing it's JTS-based common topology manipulation core to them. Supported external managed APIs include: OSGeo Feature Data Objects (FDO) geometries, OSGeo MapGuide Server (FDO-based) geometries and Autodesk ObjectARX geometries (a.k.a. entities).

    Functions provided include: Spatial predicates (based on the DE-9IM model), Overlay functions (intersection, difference, union, symmetric difference), Buffer, Convex hull, Area and distance functions, Topological validity checking, Coordinate systems manipulation (transformations), Topological graphs manipulation, and more.

    TF.NET libraries are free, licensed under GNU LGPL and available for download from Google Code page: http://code.google.com/p/tf-net/

  • uDig
    The User-friendly Desktop Internet GIS (uDig) is both a GeoSpatial application and a platform through which developers can create new, derived applications. uDig is a core element in an internet aware Geographic Information System.

    This page was updated on 01 August 2007.

    Submit Opensource Software