Continuing the discussion from Process Awesome GIS:
Platforms: Linux, Unix, Mac OSX, Windows and Android
Build: C++, Python
Repository: GitHub - qgis/QGIS: QGIS is a free, open source, cross platform (lin/win/mac) geographical information system (GIS)
Function: Geographic Information System, supports numerous vector, raster, and database formats and functionalities.
Packages: DEB, RPM, Flatpak, DMG, EXE?
Initial release: July 2002
Trying the outline from What is a software page?.