The following people have contributed code or other elements to SIPp:

Richard Gayraud
Marc Lamberton
Olivier Jacques
Herve Pellan
David Mansutti
Francois-Xavier Kowalski
Gerard Lyonnaz
Francois Draperi
F. Tarek Rogers
Peter Higginson
Vincent Luba
Shriram Natarajan
Guillaume Teissier
Clement Chen
Wolfgang Beck
Charles P Wright
Martin Van Leeuwen
Andy Aicken
Michael Hirschbichler
Rob Day
Dmitry Semyonov
Jordan Walbesser
Ken Crowell
Peter Lemenkov
Menyus Hegedűs

SIPp also uses code originally by Aaron Turner (send_packets.c) and L Peter
Deutsch (md5.c).

The following people have contributed useful bug reports to SIPp:
Paul Belanger
Jan Stanek
Enrico Hartung
Daniel Swärd
Paul D Smith
Ferenc Wágner