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Three Free GIS Softwares You Might Be Interested In

Free GIS Software
QGIS
Known as Quantum GIS supported by Plugins easily available and frequently used world wide.
Downloading Link: http://qgis.org/en/site/     

Whitebox GAT
Whitebox GAT Website says "The Whitebox GAT project began in 2009 and was conceived as a replacement for the "Terrain Analysis System (TAS)".

gVSIG
Claim to be largest online free Geomatics Professional software.
Downloading Link:  http://www.gvsig.com/en
Image by Mudassar Iqbal from Pixabay 




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