GNU Messenger

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GNU Messenger
Secure messaging system

GNU Messenger is a messaging system that attempts to keep your conversations private from everyone except the intended recipient. It is compatible with existing IM networks and lets you to communicate with other GM users even when you're not using a native server. Features include autoconf support, interoperability with other popular IM networks, separate frontend and backend (which makes it easy to write new clients, a buddy list, and taskbar docking. This project has been decommissioned and is no longer developed.


Developer reference manual available in HTML format from

Heckert gnu.small.png This is a GNU package


version (historical)
released on 1 January 2006

VCS Checkout

cvs -z3 co gm



LicenseVerified byVerified onNotes
License:GPLv2orlaterJanet Casey30 May 2002

Leaders and contributors

Jesse Lovelace Maintainer

Resources and communication

AudienceResource typeURI
DeveloperVCS Repository Webview

Software prerequisites

Required to usemysql
Required to usecrypto++
Required to usewxwindows
Required to useQt

This entry (in part or in whole) was last reviewed on 21 October 2016.


Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.