Version 0.2i and earlier:
    Tuukka Toivonen <tt@cgs.fi>
    Vincent Pagel <pagel@loria.fr>
    Takashi Iwai <tiwai@suse.de>
    Davide Moretti <dave@rimini.com>
    Chi Ming HUNG <cmhung@insti.physics.sunysb.edu>
    Riccardo Facchetti <riccardo@cdc8g5.cdc.polimi.it>

TiMidity++:
    Maintained by Masanao Izumo <iz@onicos.co.jp>
    Tomokazu Harada <harada@prince.pe.u-tokyo.ac.jp>
    Keiichirou Yamate <keiich-y@is.aist-nara.ac.jp>
    Masaki Kiryu <mkiryu@usa.net>
    Daisuke Aoki <dai@y7.net>
    Shoji Matsumoto <shom@i.h.kyoto-u.ac.jp>
    Masaaki Koyanagi <koyanagi@okilab.oki.co.jp>
    Kunihiko Imai <imai@leo.ec.t.kanazawa-u.ac.jp>
    Takaya Nogami <t-nogami@happy.email.ne.jp>
    Takanori Watanabe <takawata@shidahara1.planet.kobe-u.ac.jp>
    Hiroshi Takekawa <sian@big.or.jp>
    Daisuke Nagano <breeze.nagano@nifty.ne.jp>
    Kousuke Kinoshita <kino@krhm.jvc-victor.co.jp>
    Norikatsu Shigemura <nork@ninth-nine.com>
    Isaku Yamahata <yamahata@kusm.kyoto-u.ac.jp>
    Yoshishige Arai <ryo2@on.rim.or.jp>
    Glenn Trigg <ggt@netspace.net.au>
    Colour window manager icon by Tim Allen <thristian@usa.net>
    NAS by Michael Haardt <michael@moria.de>
    Eric A. Welsh <ewelsh@ccb.wustl.edu>
    Paolo Bonzini <bonzini@gnu.org>
    Masahiko Kimoto <kimoto@ohnolab.org>
    Takashi Iwai <tiwai@suse.de>
    Saito <saito2@digitalme.com>
    Kentaro Sato <kentaro@ps.catv.ne.jp>
    Shoichi Tamuki <tamuki@linet.gr.jp>
    Shohei Urabe <root@mput.dip.jp>
    Keishi Suenaga <s_keishi@mutt.freemail.ne.jp>
    Windows synthesizer service mode by Koji Suzuki <k@kekyo.net>

and other many people sends information and bug-fix codes.