can somebody give me some hint if there is an existing client
actually, there used to be an icq client, but it hasn’t been updated in a long while and no longer works on the network (joher.com). you can use gaim (windoze.doesntexist.com/qnx/) that have been made.
if you want to know more, there’s a qnxZone article about chatting and the applications that exist (download.qnx.com/contrib/reposit … sitory.qrm in your package installer).
I believe there is also Gaim in that repository support ICQ.