GitPython was originally written by Michael Trier.
GitPython 0.2 was partially (re)written by Sebastian Thiel, based on 0.1.6 and git-dulwich.

Contributors are:

-Michael Trier 
-Alan Briolat
-Florian Apolloner 
-David Aguilar 
-Jelmer Vernooij 
-Steve Frcinaux 
-Kai Lautaportti 
-Paul Sowden 
-Sebastian Thiel 
-Jonathan Chu 
-Vincent Driessen 
-Phil Elson 
-Bernard `Guyzmo` Pratz 

Portions derived from other open source works and are clearly marked.