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Open Source ArcGIS Alternatives

The best open source alternative to ArcGIS is QGIS. If that doesn't suit you, our users have ranked more than 25 alternatives to ArcGIS and 12 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to ArcGIS are R (programming language), GRASS GIS, PostGIS and OpenLayers.

ArcGIS alternatives are mainly GIS Software but may also be Map Services or Programming Languages. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of ArcGIS.
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  1. QGIS icon

    QGIS

    • Mac
    • Windows
    • Linux
    • Android
    • BSD
    46 alternatives to QGIS 

    QGIS, formerly Quantum GIS, is a user friendly open source Geographic Information System (GIS) licensed under the GNU General Public License that runs on Linux, Unix, Mac OSX, and Windows and supports numerous vector, raster, and database formats and functionalities.

    QGIS main window while editing a project
    QGIS main window while editing a project
    QGIS with Open Street Map data
    QGIS vs ArcGIS opinions
    Almost everyone thinks QGIS is a great alternative to ArcGIS.
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    Guest

    powerfull, stable, userfriendly, beautiful rendering and free.

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    Guest

    u can do everything in qgis what u can do in ArcGIS but also in QGIS u have full acces to the source code and all is free

    Top positive comment ago
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    Guest

    The GUI is pretty simple and intuitive and it runs decent on windows (at least as fast as ArcMap), but on GNU/Linux it flies. And since the license is GPL you can use it for different purposes (from educational to research or commercial) without worrying for a sue.

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    caiocco

    QGIS runs on multiple platforms, has a strong community and is becoming more and more mature. You can do almost everything using QGIS and it integrates very well with GRASS and SAGA for additional power.

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    Guest

    yes. because for linux this is the only option available.

    Positive comment ago
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    Guest

    Closest in terms of UI, and gets a lot of extra power from integration with other packages like Grass and orfeo.

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    Guest

    Free with same functionality.

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  2. R (programming language) icon

    R (programming language)

    • Mac
    • Windows
    • Linux
    • BSD
    95 alternatives to R (programming language) 

    R is a free software environment for statistical computing and graphics. It is a GNU project which is similar to the S language and environment which was developed at Bell Laboratories (formerly AT&T, now Lucent Technologies) by John Chambers and colleagues. R can be consider.

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    Features
    1.  Support for scriptingR (programming language) supports scripts and macros to automate or customize tasks.
    Screenshot
    On Unix
    On Mac
    R (programming language) vs ArcGIS opinions
    pros, cons and recent comments
    chtfn

    Even though this programming language is not specific to spatial data, the vast collection of R packages available for importing, processing, analysing, converting and visualising spatial makes it an excellent alternative that can create fully reproducible processes. Searching "R Spatial" online will bring up a wealth of books, tutorials and resources.

    Positive comment ago
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  3. GRASS GIS icon

    GRASS GIS

    • Mac
    • Windows
    • Linux
    36 alternatives to GRASS GIS 

    GRASS GIS (Geographic Resources Analysis Support System) is an open source, free software (FOSS) Geographical Information System (GIS) with raster, topological, vector, image processing, and visualization functionality.

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    This app doesn't have any features at the moment.
    Attribute table manager under the Tcl/Tk GUI
    GRASS GIS vs ArcGIS opinions
    Almost everyone thinks GRASS GIS is a great alternative to ArcGIS.
  4. PostGIS icon

    PostGIS

    • Mac
    • Windows
    • Linux
    • BSD
    18 alternatives to 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 backend spatial database for geographic information systems (GIS), much like ESRIs SDE...

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    This app doesn't have any features at the moment.
    Preview in DB Manager
    PostGIS vs ArcGIS opinions
    Some users think PostGIS is a great alternative to ArcGIS, some don't.
    Guest

    While PostGIS can collect GIS data, its primary functionality is that of a database and doesn't provide most of the feature set that ArcGIS has.

    Negative comment ago
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    4
  5. OpenLayers icon

    OpenLayers

    • Online
    • Self-Hosted
    20 alternatives to OpenLayers 

    OpenLayers is a high-performance, feature-packed library for all your mapping needs.

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    This app doesn't have any features at the moment.
    Screenshot


  6. SAGA GIS icon

    SAGA GIS

    • Mac
    • Windows
    • Linux
    31 alternatives to 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...

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    Screenshot
  7. Mapserver icon

    Mapserver

    • Mac
    • Windows
    • Linux
    35 alternatives to Mapserver 

    MapServer is an Open Source platform for publishing spatial data and interactive mapping applications to the web. Originally developed in the mid-1990’s at the University of Minnesota, MapServer is released under an MIT-style license, and runs on all major platforms (Windows...

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    This app doesn't have any features at the moment.
  8. MapWindow GIS icon

    MapWindow GIS

    21 alternatives to MapWindow GIS 

    MapWindow is a fully free and open source geographic information system project. It includes an open source programming component, MapWinGIS ActiveX, and an extensible desktop application that supports plug-ins written in .NET (C# and VB.NET).

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    This app doesn't have any features at the moment.
    Main UI
  9. uDig icon

    uDig

    • Windows
    34 alternatives to uDig 

    uDig is a GIS software program produced by a community led by Canadian-based consulting company Refractions Research. It is based on the Eclipse platform and features full layered open source GIS. It is written in Java and released under GNU Lesser General Public License.

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    This app doesn't have any features at the moment.
    Taaka, developed using uDig by Arbonaut for Finnish Forest and Park Services
  10. OpenJUMP GIS icon

    OpenJUMP GIS

    • Mac
    • Windows
    • Linux
    11 alternatives to OpenJUMP GIS 

    OpenJUMP is an open source Geographic Information System (GIS) written in the Java programming language. It is developed and maintained by a group of volunteers from around the globe.

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    Features
    1.  PortableOpenJUMP GIS can be used from a USB stick or similar with no prior installation.
      Screenshot
      Screenshot
    Showing 10 of 12 alternatives
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