Maintainer and author:
Timo Schulz <twoaday@gmx.net>

Simon Josefsson
 various cleanups and he integrated patches sent
 by other users. Also scripts and changes for
 the autoconf environment and mingw32.

Nikos Mavroyanopoulos
 contributed a lot of smaller patches for
 the autoconf environment and the code.

GPLed code from other people that is used in OpenCDK:

Free Software Foundation
 code based on GnuPG.

Eric S. Raymond
 base64 routines in armor.c.