Browse free open source GIS software and projects below. Use the toggles on the left to filter open source GIS software by OS, license, language, programming language, and project status.

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  • 1
    GeoServer
    GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. Designed for interoperability, it publishes data from any major spatial data source using open standards: WMS, WFS, WCS, WPS and REST
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    4.7 out of 5 stars 30 Reviews
    Downloads: 53,806 This Week
    Last Update:
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  • 2
    SAGA GIS
    SAGA - System for Automated Geoscientific Analyses - is a Geographic Information System (GIS) software with immense capabilities for geodata processing and analysis. SAGA is programmed in the object oriented C++ language and supports the implementation of new functions with a very effective Application Programming Interface (API). Functions are organised as modules in framework independent Module Libraries and can be accessed via SAGA’s Graphical User Interface (GUI) or various scripting environments (shell scripts, Python, R, ...). Please provide the following reference in your work if you are using SAGA: Conrad, O., Bechtel, B., Bock, M., Dietrich, H., Fischer, E., Gerlitz, L., Wehberg, J., Wichmann, V., and Boehner, J. (2015): System for Automated Geoscientific Analyses (SAGA) v. 2.1.4. Geosci. Model Dev., 8, 1991-2007, https://doi.org/10.5194/gmd-8-1991-2015. For more information visit the project homepage and the wiki.
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    4.9 out of 5 stars 43 Reviews
    Downloads: 36,405 This Week
    Last Update:
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  • 3

    GeographicLib

    Geographic library

    GeographicLib is a small C++ library for: geodesic and rhumb line calculations; conversions between geographic, UTM, UPS, MGRS, geocentric, and local cartesian coordinates; gravity (e.g., EGM2008) and geomagnetic field (e.g., WMM2020) calculations.
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    5.0 out of 5 stars 10 Reviews
    Downloads: 26,366 This Week
    Last Update:
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  • 4
    QGIS

    QGIS

    Cross platform (lin/win/mac) geographical information system (GIS)

    Create, edit, visualize, analyze and publish geospatial information on Windows, Mac, Linux, BSD and mobile devices. For your desktop, server, in your web browser and as developer libraries. QGIS is a user-friendly open-source Geographic Information System (GIS) licensed under the GNU General Public License. QGIS is an official project of the Open Source Geospatial Foundation (OSGeo). It runs on Linux, Unix, Mac OSX, Windows and Android and supports numerous vector, raster, and database formats and functionalities. QGIS provides a continously growing number of capabilities provided by core functions and plugins. You can visualize, manage, edit, analyze data, and compose printable maps. We also collect case studies of how people all over the world use QGIS for their GIS work. You can view combinations of vector and raster data (in 2D or 3D) in different formats and projections without conversion to an internal or common format.
    Downloads: 316 This Week
    Last Update:
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  • 5
    GeoTools, the Java GIS toolkit

    GeoTools, the Java GIS toolkit

    Toolkit for working with and mapping geospatial data

    GeoTools is an open source (LGPL) Java code library which provides standards compliant methods for the manipulation of geospatial data. GeoTools is an Open Source Geospatial Foundation project. The GeoTools library data structures are based on Open Geospatial Consortium (OGC) specifications.
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    4.9 out of 5 stars 38 Reviews
    Downloads: 756 This Week
    Last Update:
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  • 6
    OpenJUMP (The JUMP Pilot Project)
    OpenJUMP is a community driven fork of JUMP the "Java Unified Mapping Platform" GIS software. The original JUMP was developed by Vivid Solutions, released under GPL2 in 2003 and discontinued in 2006. During 2004 already some enthusiastic developers joined together to enhance further the features of JUMP. They launched an independent development branch called OpenJUMP. The name gives credit to the original JUMP development, and at the same time describes the objectives of this project to be fully open to anyone wanting to contribute. These days OpenJUMP is developed and maintained by (some few) volunteers around the globe. If you need functionality or even better want to contribute you are very welcome to contact us at our mailing list.
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    5.0 out of 5 stars 15 Reviews
    Downloads: 292 This Week
    Last Update:
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  • 7
    Blender GIS

    Blender GIS

    Blender addons to make the bridge between Blender and geographic data

    Import in Blender most commons GIS data format, Shapefile vector, raster image, geotiff DEM, OpenStreetMap XML. There are a lot of possibilities to create a 3D terrain from geographic data with BlenderGIS, check the Flowchart to have an overview. Display dynamics web maps inside Blender 3d view, requests for OpenStreetMap data (buildings, roads, etc.), get true elevation data from the NASA SRTM mission. Manage georeferencing information of a scene, compute a terrain mesh by Delaunay triangulation, drop objects on a terrain mesh, make terrain analysis using shader nodes, set up new cameras from geotagged photos, set up a camera to render with Blender a new georeferenced raster.
    Downloads: 60 This Week
    Last Update:
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  • 8
    Viking GPS data editor and analyzer

    Viking GPS data editor and analyzer

    Viking is a free/open source program to manage GPS data

    Viking is a free/open source program to manage GPS data. You can import, plot and create tracks, routes and waypoints, show OSM, Bing Aerial and other maps, geotag images, create routes using OSRM, see real-time GPS position (not in Windows), make maps using Mapnik (not in Windows), control items, etc. It is written in mostly in C (with some C++) & the GTK+3 toolkit. Viking is currently dual managed - with a corresponding Github presence at: https://github.com/viking-gps/viking Where you may find it easier to view the code and raise issues there too.
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    4.7 out of 5 stars 30 Reviews
    Downloads: 221 This Week
    Last Update:
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  • 9
    Yet Another APRS Client
    Client software for users of the Automatic Packet Reporting System amateur radio network.
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    5.0 out of 5 stars 3 Reviews
    Downloads: 347 This Week
    Last Update:
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  • 10
    NASA World Wind is a graphically rich 3D virtual globe for use on desktop computers running Windows. It combines NASA imagery generated from satellites that have produced Blue Marble, Landsat 7, SRTM, MODIS and more.
    4.7 out of 5 stars 28 Reviews
    Downloads: 106 This Week
    Last Update:
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  • 11
    OffRoad

    OffRoad

    Offline vector map display ported from OsmAnd

    An offline map viewer for the Desktop based on OsmAnd.
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    4.5 out of 5 stars 6 Reviews
    Downloads: 114 This Week
    Last Update:
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  • 12
    The Java RTree project aims to maintain an Java version of the RTree spatial indexing algorithm. See http://jsi.sourceforge.net for more information, and http://github.com/aled/jsi for latest development code.
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    5.0 out of 5 stars 4 Reviews
    Downloads: 123 This Week
    Last Update:
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  • 13
    GeoNetwork opensource - Metadata Catalog
    A web based Metadata Catalog Server for data description and discovery. Supports both generic and geospatial data discovery. It implements international standards (e.g. ISO19115/19139/19119, ISO19115-3, DCAT-AP, CSW 2.0, OGC API Records). It originates from the United Nations and is used by many governments as geoportal software. Active development and discussion takes place on GitHub and OSGeo Discourse. You can also connect directly with the companies supporting the development. Source code available on github https://github.com/geonetwork/
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    Downloads: 371 This Week
    Last Update:
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  • 14
    S-GeMS is a software for 3D geostatistical modeling. It implements many of the classical geostatistics algorithms, as well as new developments made at Stanford University. See http://sgems.sourceforge.net
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    4.0 out of 5 stars 1 Review
    Downloads: 205 This Week
    Last Update:
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  • 15
    GPX Editor
    Load, modify and save your GPX 1.1 files. Add and remove waypoints, edit track and routes, simplify tracks (reducing file's size), clean recorded data, add and edit GPX metadata, edit waypoint, route and track properties, all with real-time preview.
    3.9 out of 5 stars 48 Reviews
    Downloads: 77 This Week
    Last Update:
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  • 16
    Navit
    Modular, touch screen friendly navigation system with GPS tracking, realtime routing engine and support for various vector map formats. Works on a wide range of devices, from computers to smartphones.
    4.9 out of 5 stars 28 Reviews
    Downloads: 50 This Week
    Last Update:
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  • 17
    OpenCPN: A concise ChartPlotter/Navigator. A cross-platform ship-borne GUI application supporting * GPS/GPDS Postition Input * BSB Raster Chart Display * S57 Vector ENChart Display * AIS Input Decoding * Waypoint Autopilot Navigation
    4.9 out of 5 stars 47 Reviews
    Downloads: 34 This Week
    Last Update:
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  • 18
    NAVeGIS

    NAVeGIS

    GPS navigation software for Windows Mobile & WinCE devices.

    NAVeGIS is a WinCE/Windows Mobile navigation application.
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    5.0 out of 5 stars 2 Reviews
    Downloads: 64 This Week
    Last Update:
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  • 19
    GeOxygene
    GeOxygene aims at providing an open framework which implements OGC/ISO specifications for the development and deployment of geographic (GIS) applications. It is a open source contribution of the COGIT lab. at the IGN (the French National Mapping Agency).
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    5.0 out of 5 stars 1 Review
    Downloads: 78 This Week
    Last Update:
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  • 20
    GeoServer

    GeoServer

    GeoServer repository

    GeoServer is an open-source software server written in Java that allows users to share and edit geospatial data. Designed for interoperability, it publishes data from any major spatial data source using open standards. Being a community-driven project, GeoServer is developed, tested, and supported by a diverse group of individuals and organizations from around the world. GeoServer is the reference implementation of the Open Geospatial Consortium (OGC) Web Feature Service (WFS) and Web Coverage Service (WCS) standards, as well as a high-performance certified compliant Web Map Service (WMS), compliant Catalog Service for the Web (CSW) and implementing Web Processing Service (WPS). GeoServer forms a core component of the Geospatial Web.
    Downloads: 5 This Week
    Last Update:
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  • 21
    opencpnplugins

    opencpnplugins

    Plugins for OpenCPN

    This project hosts various plugins for the OpenCPN chart plotter, which are not bundled with the core package. OpenCPN is a free software (GPLv2) project to create a concise chart plotter and navigation software, for use underway or as a planning tool. OpenCPN is developed by a team of active sailors using real world conditions for program testing and refinement.
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    5.0 out of 5 stars 1 Review
    Downloads: 59 This Week
    Last Update:
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  • 22
    GeoWebCache

    GeoWebCache

    GWC is a tile server and caching proxy written in Java

    GeoWebCache is a WMS tile cache that lets you serve cached map data to WMS clients, Goole Earth, Google Maps and MS Virtual Earth. The system is pluggable on both ends and does automatic matching to the best available tile. It is very fast and scalable.
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    Downloads: 85 This Week
    Last Update:
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  • 23
    Automatically geocode pictures from your camera and a GPS track log. Following Google code closure the only official webpage is (doc, support, code) : https://github.com/notfrancois/GPicSync
    5.0 out of 5 stars 6 Reviews
    Downloads: 18 This Week
    Last Update:
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  • 24

    GPSBabel

    GPSBabel converts and transfers data like waypoints, tracks & routes.

    ** This site is of historical interest only. The project is active on www.gpsbabel.org and github. Some of the county/state files remain active, but no version of GPSBabel should be downloaded from this site. ** GPSBabel reads, writes, and manipulates GPS waypoints in a variety of formats. Over 100 supported formats include GPX, GeoJSON and Garmin serial and USB protocols, Geocaching Pocket Queries and *.loc and more! For Windows, Linux, Mac.
    3.7 out of 5 stars 6 Reviews
    Downloads: 35 This Week
    Last Update:
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  • 25
    gpsfeed+

    gpsfeed+

    A software gps simulator

    A software gps simulator, providing TCP/IP, UDP, http and serial port connectivity in NMEA 0183, XML or user defined output format. Usable for testing all kinds of GPS applications. Can playback pre-recorded GPS files with NMEA output.
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    4.6 out of 5 stars 5 Reviews
    Downloads: 18 This Week
    Last Update:
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