You can download Quantum GIS 3.2.1 for Mac from our software library for free. The current installer available for download occupies 234.7 MB on disk. The application lies within Education Tools, more precisely Science. This Mac download was scanned by our antivirus and was rated as safe.
From the developer:
QGIS is a professional GIS application that is built on top of and proud to be itself Free and Open Source Software (FOSS).
You may want to check out more software for Mac, such as spatialite-gis, Quantum FX or Quantum Bound States, which might be similar to Quantum GIS.