I-QGIS iwuhlelo lokusebenza lwamahhala nomthombo ovulekile lwe-cross-platform desktop geographic information system (GIS) olusekela ukubuka, ukuhlela, ukuphrinta, nokuhlaziywa kwedatha ye-geospatial.

I-QGIS isebenza njengesofthiwe yesistimu yolwazi lwendawo (GIS), evumela abasebenzisi ukuthi bahlaziye futhi bahlele ulwazi lwendawo, ngaphezu kokwenza nokuthekelisa amamephu ezithombe. I-QGIS isekela izendlalelo ze-raster, vector kanye ne-mesh. Idatha yeVector igcinwa njengephoyinti, umugqa, noma izici ze-polygon. Amafomethi amaningi ezithombe ze-raster asekelwa, futhi isofthiwe ingaba nezithombe ze-georeference.

I-QGIS isekela amafomu, ama-geodatabase yomuntu siqu, i-dxf, i-MapInfo, i-PostGIS, namanye amafomethi asezingeni lomkhakha. Amasevisi ewebhu, okuhlanganisa Isevisi Yemephu Yewebhu kanye Nesevisi Yesici Sewebhu, nazo ziyasekelwa ukuvumela ukusetshenziswa kwedatha evela emithonjeni yangaphandle.

I-QGIS ihlanganisa namanye amaphakheji e-GIS anomthombo ovulekile, okuhlanganisa i-PostGIS, i-GRSS GIS, ne-MapServer.[4] Ama-plugin abhalwe nge-Python noma nge-C++ andisa amakhono e-QGIS. Ama-plugin angakwazi ukwenza i-geocode esebenzisa i-Google Geocoding API, enze imisebenzi ye-geoprocessing efana naleyo yamathuluzi avamile atholakala ku-ArcGIS, futhi axhumane nesizindalwazi se-PostgreSQL/PostGIS, SpatiaLite kanye ne-MySQL.

I-QGIS ingasetshenziswa ne-SAGA GIS ne-Kosmo.