The following people have contributed to LeoCAD:

Author, Original Design:
Leonardo Zide <leozide@gmail.com>

Contributions (in alphabetical order):
Christian Höltje <docwhat@gerf.org>
David Paleino <dapal@debian.org>
Hubert Figuiere <hub@figuiere.net>
Joerg Scheurich <rusmufti@helpdesk.bera.rus.uni-stuttgart.de>
Nicolas Guilbert <nicolas@ange.dk>
Nicolas Schodet <nico-leocad@ni.fr.eu.org>
Pat Mahoney <pat7@gmx.net>
Petter Reinholdtsen <pere@hungry.com>
Renaud Breard <renaud@islande.net>
Rodney Rushing <leocad.reg@yenandjen.com>
Torbjörn Söderstedt <torbjrn@gmail.com>

Translations:
Sylvain L. Sauvage <SSauvage@club-internet.fr>
Zezinho <lists.jjorge@free.fr>
