JUNG was originally created in 2003 by (in alphabetical order):

Danyel Fisher
Joshua O'Madadhain
Scott White

Later contributors have included:

Tom Nelson
Yan-Biao Boey
W. Giordano
Masanori Harada
Nathan Mittler
Jasper Voskuilen
John Yesberg

Sponsoring organizations:
Regents of the University of California
Google, Inc.
