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Like the ModelBuilder of ArcGIS for Desktop to run simultaneous geoprocessing tools, is there any model builder available in QGIS or any other open source GIS software?

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Sextante is a geoprocessing library that can be used from several GIS applications. I recommend you to use it from gvSIG as i think that it has the best integration. Sextante also allows (if you configure it properly) use algorithms from SAGA and GRASS.

Here you can see a video that shows how the modeler works.

Update: From March, qgis also has a Sextante plugin that works really well.

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Sextante plugin is now core in the recent versions of QGIS and is called "Processing" – Alexandre Neto Feb 3 at 23:24

GRASS has a model builder that works pretty well (don't know how it compares to the Arc* one).

Victor Olaya, the developer of Sextante is currently working on Sextante for QGIS. It's work-in-progress and not yet ready for production use so use with care. You can watch a short demonstration of the Sextante model builder here:

Update Nov 2012: Sextante for QGIS is developing very well, as you can see eg. in this new case study:

Update Jan 2016: Sextante is now a core plugin in QGIS recent versions, and it's called Processing. Check more information about in the QGIS Users Manual - QGIS processing framework. You can also get information about how to use the Graphical Modeler in here.

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Publishing such models as Web Processing Services (WPS) would also be good to have in the QGIS RoadMap if it is not there already. – PolyGeo Feb 15 '12 at 11:54
QGIS offers a WPS client extension. See also – markusN Feb 16 '12 at 10:06
See here for the GRASS GIS Model builder: – markusN Feb 16 '12 at 10:06

Though this is a bit late answer, it might be of help to others.

Now you can access a model builder in QGIS from the:

Processing menu -> Graphical modeler

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I am glad to inform that we are currently working on SEXTANTE for QGIS. It should be ready soon, and it will include the modeler, which is what you are asking for.


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Can we ask who exactly is "we"? "The community", you, your company? Just curios. Is there any wiki talking about the development? I think the QGIS community would be very interested! – RyanDalton Mar 6 '12 at 19:51
Is this still being worked on? It looks like the Sextante plugin is deprecated. – Brideau Nov 10 '15 at 15:18

You may also consider some basic Python scripting to run multiple commands in series.

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Thanks. I am pretty new to QGIS and scripting. All I need to get done is .. enter a value for a polygon and which give me the list of all polygon values adjoining ...Kind of proximity analysis.Any ideas on this... – SNT Feb 15 '12 at 16:56
IN GRASS (and so in QGIS trough the QGIS/GRASS plugin) you can do proximity analysis, but this does mean you need a model builder. – Giovanni Manghi Feb 15 '12 at 17:43

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