- Chris Glass
- Diederik van der Boor
- Charlie Denton
- Jerome Leclanche
- Abel Daniel
- Adam Chainz
- Adam Wentz
- Adam Donaghy
- Andrew Ingram (contributed setup.py)
- Al Johri
- Alex Alvarez
- Andrew Dodd
- Angel Velasquez
- Austin Matsick
- Bastien Vallet
- Ben Konrath
- Bert Constantin
- Bertrand Bordage
- Chad Shryock
- Charles Leifer (python 2.4 compatibility)
- Chris Barna
- Chris Brantley
- Christopher Glass
- David Sanders
- Éric Araujo
- Evan Borgstrom
- Frankie Dintino
- Gavin Wahl
- Germán M. Bravo
- Gonzalo Bustos
- Gregory Avery-Weir
- Hugo Osvaldo Barrera
- Jacob Rief
- James Murty
- Jedediah Smith (proxy models support)
- John Furr
- Jonas Haag
- Jonas Obrist
- Julian Wachholz
- Kamil Bar
- Kelsey Gilmore-Innis
- Kevin Armenat
- Krzysztof Gromadzki
- Krzysztof Nazarewski
- Luis Zárate
- Marius Lueck
- Martin Brochhaus
- Martin Maillard
- Michael Fladischer
- Nick Ward
- Oleg Myltsyn
- Omer Strumpf
- Paweł Adamczak
- Petr Dlouhý
- Sander van Leeuwen
- Sobolev Nikita
- Tadas Dailyda
- Tai Lee
- Tomas Peterka
- Tony Narlock
- Vail Gold
- Bert Constantin 2009/2010 (Original author, disappeared from the internet :( )