Video: GRASS GIS development visualization from 1999 to 2011
Watch how the community based GRASS GIS software development works! You can see how the individual contributors modify and expand the source code.
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/
I wish I could post a more useful comment, but… THAT IS REALLY COOL!Very nicely done.