QGIS is an open source option for GIS software. There are many benefits to using QGIS including:
- the software is free
- QGIS is easy to learn if users are familiar with ArcGIS
- QGIS can be used on a Mac OS X because the software is multiplatform...QGIS can also be used on Linux, Windows, Berkely Software Distribution (BSD), and Android.
The latest version of QGIS is 2.14 (March 2016) and the software is updated often.