Py4J was originally created in 2009 by Barthelemy Dagenais.

Here is an inevitably incomplete list of MUCH-APPRECIATED CONTRIBUTORS --
people who have submitted patches, reported bugs, and generally made Py4J that
much better:

Peter Abeles <peter.abeles@gmail.com>
Patrick Alt <patrick_alt@ultimatesoftware.com>
Max Bolingbroke <batterseapower@hotmail.com>
Christophe Buffenoir <kujiu@kujiu.org>
Steven Burns <royalstream@hotmail.com>
Jacek Bzdak <jbzdak@gmail.com>
Barthelemy Dagenais <barthelemy@infobart.com>
Frankie Dintino <fdintino@theatlantic.com>
Matthew Farrellee <matt@redhat.com>
Nicholas Gates <nickgatzgates@gmail.com>
Matthew Gerring <matthew.gerring@gmail.com>
Gabe Goodhart <ghart@us.ibm.com>
Jonah Graham <jonah@kichwacoders.com>
Alex Grönholm <alex.gronholm+git@nextday.fi>
David A. Hannasch <David.A.Hannasch@gmail.com>
Hugo <hugovk@users.noreply.github.com>
Hyukjin Kwon <gurwls223@gmail.com>
Chris Kanich <ckanich@uic.edu>
Abdeali Kothari <abdealikothari@gmail.com>
Henrik Lasu <hlasu@thermocalc.se>
Haejoon Lee <haejoon309@gmail.com>
Scott Lewis <scottslewis@gmail.com>
Chetan Narsude <@243826>
Andrii Oriekhov <andriyorehov@gmail.com>
Yann Richet <yann.richet@irsn.fr>
Josh Rosen <rosenville@gmail.com>
Isaac Sánchez Barrera <isaac@isb1009.es>
Alexander Shadchin <alexandr.shadchin@gmail.com>
David C. Sterratt <david.c.sterratt@ed.ac.uk>
tobe <tobeg3oogle@gmail.com>
Marcelo Vanzin <vanzin@cloudera.com>
Greg Warner <gdwarner@gmail.com>
James Westover <westover@uber.com>
Nick White <n.j.white@gmail.com>
Andrey Yanov <ayanov@deloitte.com>
Stefano Zacchiroli <zack@upsilon.cc>
Jiajie Zhong <zhongjiajie955@hotmail.com>
Shixiong Zhu <@zsxwing>
Kun <@kun1996>
Takuya Ueshin <@ueshin>
