When you mention QGIS, you should also mention GDAL, JTS, udig, geoserver, open stree maps, open scene graph, FWtools etc. Open source GIS has awesome list of projects and people, QGIS being only one of them. It really fascinates me.

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Qem 4 days ago | parent | next [-]

I think it did to GIS what Sagemath did to free/open source mathematical software. It integrated everything in a nice package, freeing the users from the burden of dealing with countless disparate packages.

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larodi 4 days ago | parent | prev | next [-]

and of course the king - PostGIS

and also that qgis installs 1g+ of all these goodies tied together.

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okok3857 4 days ago | parent [-]

Fun fact: QGIS was originally written just to view PostGIS tables.

	▲	tomrod 4 days ago \| parent [-]
		That is a fun fact!

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motorest 4 days ago | parent | prev [-]

> When you mention QGIS, you should also mention GDAL (...)

GDAL should be front and center. It's the xkcd 2347 of earth observation and geographical information systems

	▲	stevage 4 days ago \| parent \| next [-]
		Yeah out of these GDAL is the one I use the most because it's easy to script. I honestly find it easier to use GDAL on the command line than the QGIS GUI which says a lot about the latter.
	▲	nullhole 4 days ago \| parent \| prev [-]
		Also PROJ, the quiet bit closer to the core that does projections. The sqlite db alone that's packaged with PROJ is a pillar of knowledge that one can only marvel at. The most authoritative and wide-ranging collection of projection/datum information I'm aware of. https://www.osgeo.org/projects/proj/