Here is a list of developers who have committed to the PyPy source code base, ordered by number of commits (which is certainly not a very appropriate measure but it’s something):
Armin Rigo
Maciej Fijalkowski
Carl Friedrich Bolz
Antonio Cuni
Amaury Forgeot d'Arc
Samuele Pedroni
Alex Gaynor
Michael Hudson
David Schneider
Holger Krekel
Christian Tismer
Matti Picus
Hakan Ardo
Benjamin Peterson
Philip Jenvey
Anders Chrigstrom
Brian Kearns
Manuel Jacob
Eric van Riet Paap
Wim Lavrijsen
Richard Emslie
Alexander Schremmer
Dan Villiom Podlaski Christiansen
Ronan Lamy
Lukas Diekmann
Sven Hager
Anders Lehmann
Aurelien Campeas
Niklaus Haldimann
Camillo Bruni
Laura Creighton
Toon Verwaest
Leonardo Santagada
Seo Sanghyeon
Justin Peel
Ronny Pfannschmidt
David Edelsohn
Anders Hammarquist
Jakub Gustak
Romain Guillebert
Guido Wesdorp
Lawrence Oluyede
Remi Meier
Bartosz Skowron
Daniel Roberts
Niko Matsakis
Adrien Di Mascio
Ludovic Aubry
Alexander Hesse
Jacob Hallen
Jason Creighton
Alex Martelli
Michal Bendowski
Jan de Mooij
stian
Michael Foord
Stephan Diehl
Stefan Schwarzer
Valentino Volonghi
Tomek Meka
Patrick Maupin
Bob Ippolito
Bruno Gola
Jean-Paul Calderone
Timo Paulssen
Alexandre Fayolle
Simon Burton
Marius Gedminas
John Witulski
Konstantin Lopuhin
Greg Price
Dario Bertini
Mark Pearse
Simon Cross
Andreas Stührk
Jean-Philippe St. Pierre
Guido van Rossum
Pavel Vinogradov
Paweł Piotr Przeradowski
Paul deGrandis
Ilya Osadchiy
Adrian Kuhn
Boris Feigin
Stefano Rivera
tav
Taavi Burns
Georg Brandl
Bert Freudenberg
Stian Andreassen
Wanja Saatkamp
Gerald Klix
Mike Blume
Oscar Nierstrasz
Stefan H. Muller
Laurence Tratt
Rami Chowdhury
David Malcolm
Eugene Oden
Henry Mason
Preston Timmons
Jeff Terrace
David Ripton
Dusty Phillips
Lukas Renggli
Edd Barrett
Guenter Jantzen
Tobias Oberstein
Ned Batchelder
Amit Regmi
Ben Young
Nicolas Chauvat
Andrew Durdin
Andrew Chambers
Michael Schneider
Nicholas Riley
Jason Chu
Igor Trindade Oliveira
Jeremy Thurgood
Rocco Moretti
Gintautas Miliauskas
Michael Twomey
Lucian Branescu Mihaila
Tim Felgentreff
Tyler Wade
Gabriel Lavoie
Olivier Dormond
Jared Grubb
Karl Bartel
Tobias Pape
Brian Dorsey
Victor Stinner
Andrews Medina
Stuart Williams
Jasper Schulz
Christian Hudon
Toby Watson
Antoine Pitrou
Aaron Iles
Michael Cheng
Justas Sadzevicius
Gasper Zejn
Neil Shepperd
Mikael Schönenberg
Elmo Mäntynen
Jonathan David Riehl
Stanislaw Halik
Anders Qvist
Chirag Jadwani
Beatrice During
Alex Perry
Vincent Legoll
Alan McIntyre
Alexander Sedov
Corbin Simpson
Christopher Pope
Christian Tismer
Dan Stromberg
Stefano Parmesan
Alexis Daboville
Jens-Uwe Mager
Carl Meyer
Karl Ramm
Pieter Zieschang
Gabriel
Andrew Dalke
Sylvain Thenault
Nathan Taylor
Vladimir Kryachko
Jacek Generowicz
Alejandro J. Cura
Jacob Oscarson
Travis Francis Athougies
Kristjan Valur Jonsson
Neil Blakey-Milner
Lutz Paelike
Lucio Torre
Lars Wassermann
Henrik Vendelbo
Dan Buch
Miguel de Val Borro
Artur Lisiecki
Sergey Kishchenko
Ignas Mikalajunas
Christoph Gerum
Martin Blais
Lene Wagner
Tomo Cocoa
roberto@goyle
Yury V. Zaytsev
Anna Katrina Dominguez
William Leslie
Bobby Impollonia
timo@eistee.fritz.box
Andrew Thompson
Yusei Tahara
Ben Darnell
Roberto De Ioris
Juan Francisco Cantero Hurtado
Godefroid Chappelle
Joshua Gilbert
Dan Colish
Christopher Armstrong
Michael Hudson-Doyle
Anders Sigfridsson
Yasir Suhail
Floris Bruynooghe
Akira Li
Gustavo Niemeyer
Stephan Busemann
Rafał Gałczyński
Christian Muirhead
James Lan
shoma hosaka
Daniel Neuhäuser
Buck Golemon
Konrad Delong
Dinu Gherman
Chris Lambacher
coolbutuseless@gmail.com
w31rd0
Jim Baker
Rodrigo Araújo
Armin Ronacher
Brett Cannon
yrttyr
Zooko Wilcox-O Hearn
Tomer Chachamu
Christopher Groskopf
opassembler.py
Antony Lee
Jim Hunziker
Markus Unterwaditzer
Even Wiik Thomassen
jbs
soareschen
Mike Bayer
Flavio Percoco
Kristoffer Kleine
yasirs
Michael Chermside
Anna Ravencroft
Julien Phalip
Dan Loewenherz