It's a software which handles API consistent with Java Messaging service.
My Notes Keeper
Manage your notes and information in rich-text format inside encrypted files.
Access your email accounts and chat with your contacts from desktop.
An ActionBible module featuring King James version of the Bible.
An ActionBible module featuring Young's literal translation of the Bible.
It adds a new Action/ZipMail Compression menu to your Lotus Notes Client.
FewClix Retro is integrated as an additional “TAB” in the Lotus Notes client.
HealthLink SIX Client Software is a HealthLink Messaging client..
LookingGlass Viewer Project
The LookingGlass Viewer provides a modular framework for a client viewer.
Pandion is an instant messaging client designed for XMPP networks.
Rare Ideas, LLC
Pidgin instant messaging client packaged as a portable app.
Is a independent platform instant messaging client for Windows Live Messenger.
You can use the PC messaging client software to send SMS, WAP, MMS messages.
Miranda NG Team
Miranda NG is a multi-protocol instant messaging client for Windows.
DBabble is a chat, discussion, and instant messaging server and client.