QGIS
QGIS (formerly known as Quantum GIS) is a popular open source GIS software application. QGIS can be downloaded for free.
Pan Sharpen Landsat Imagery in QGIS
Caitlin Dempsey
This QGIS tutorial guides you through pan sharpening Landsat imagery by combining the 15-meter panchromatic band with lower-resolution multispectral bands.
How to Find the URL to an ArcGIS Online Web Map and Add it to QGIS
Caitlin Dempsey
Learn how to find URLs for older feature and map servers hosted on ArcGIS Online so they can be added to QGIS.
How to Use Esri File Geodatabases in QGIS
Caitlin Dempsey
Learn how to load both Esri vector and raster file geodatabases in QGIS.
Little Known QGIS Parlor Tricks
Caitlin Dempsey
The coordinate box in QGIS is one place where you can uncover neat little GIS Easter eggs.
How to Install QGIS on a Mac Computer
Caitlin Dempsey
Follow these step-by-step instructions on how to install QGIS on a Mac.