Original code:

  Timo Sirainen <cras@irssi.org>

Irssi staff (current maintainers) <staff@irssi.org>:

  Valentin Batz (senneth, vb)
  Wouter Coekaerts (coekie)
  Jochen Eisinger (c0ffee)
  Geert Hauwaerts (Geert)
  Jilles Tjoelker (jilles)
  Alexander Færøy (ahf)
  Jase Thew (bazerka)
  dequis (dx)
  Ailin Nemui (Nei)
  Giuseppe (TheLemonMan, lemonboy)

Former developers:

  Emanuele Giaquinta (exg)

Large feature patches by:

  David Leadbeater (dg, dgl) : isupport
  vjt@users.sf.net : SSL support
  Joel Eriksson : SSL certs
  Heikki Orsila : DCC SEND queueing
  Mark Trumbull : DCC SERVER
  Francesco Fracassi : Passive DCC
  Uli Meis : OTR support
  David Goulet : OTR support

Other patches (grep for "patch" in ChangeLog) by:

  Toby Peterson
  Soren Jacobsen
  Kuang-che Wu
  Joost Vunderink (Garion)
  Wang WenRui
  Jean-Yves Lefort (decadix)
  Joel Eriksson
  Maarten van der Zwaart
  Noah Levitt
  Krzysztof Kowalik (Borys)
  Peder Stray
  mls@suse.de
  nix@suhs.nu
  Marcin Kowalczyk (Qrczak)
  Petr Baudis
  Bjoern Krombholz (fuchs)
  aldem-irssi@aldem.net
  BC-bd
  Juerd
  Han
  pv2b
  Tommi Komulainen (tommik)
  mike@po.cs.msu.su
  zinx@magenet.net
  yathen@web.de
  paul@raade.org
  Leszek Matok
  tygrys@moo.pl
  manoj@io.com
  cph@cph.demon.co.uk
  ganesh@earth.li
  Jakub Jankowski (shasta)
  vanilla@freebsd.org
  Tinuk
  Mark Glines
  Kjetil Ødegaard
  Chris Moore
  ComradeP
  Lauri Nurmi
  Mikko Rauhala
  loafier
  Nicolas Collignon
  Daniel Koning
  Yi-Hsuan Hsin
  Jon Mayo
  Johan Kiviniemi
  JasonX
  Lukas Mai (mauke)
  Ismael Luceno
  Thomas Karpiniec
  Svante Kvarnström
  Tom Feist (shabble)
  Sebastian Thorarensen (Sebban)
  Hans Nielsen
  Jari Matilainen (vague)
  Thibault B (isundil)
  kyak
  Vesa Pirila (Lohhari)
  Haw Loeung
  François Revol (mmuman)
  blha303
  Guillaume Brogi (guiniol)
  Adam-
  Robert C Jensen
  Paul Johnson
  KindOne
  Fabian Kurz
  Todd Pratt
  xavierog
