Watch how the community based GRASS GIS software development works! You can see how the individual contributors modify and expand the source code.

GRASS GIS 6.4 development visualization from 1999 to 2011 with Gource

The corresponding timeline is available at https://grass.osgeo.org/devel/grasshist.html

Download the high resolution version from https://grass.fsv.cvut.cz/video/