Open Source Desktop Operating Systems Messaging Platforms

BeeBEEP is a free, open-source, peer-to-peer (P2P) desktop LAN chat and office messenger built with end-to-end encryption (Rijndael Algorithm, AES). Designed for local area networks, this free cross-platform messaging app enables instant messaging, group chat, and secure file sharing across your office, home, or intranet—completely serverless and offline. Whether you need a private LAN chat application for your team or a secure office communicator over VPN, BeeBEEP operates without central servers or cloud dependencies. It is a free, serverless chat solution for Windows, Linux, and macOS where privacy, data security, and local network communication are essential.

The gSOAP toolkit is an extensive suite of portable C and C++ software to develop XML Web services with powerful type-safe XML data bindings. Easy-to-use code-generator tools allow you to directly integrate XML data in C and C++. Serializes native application data in XML. Includes WSDL/XSD schema binding and auto-coding tools, stub/skeleton compiler, Web server integration with Apache module and IIS extension, high-performance XML processing with schema validation, fast MIME/MTOM streaming, SOAP and REST Web API development, WS-* protocols (WS-Security, WS-Policy, WS-ReliableMessaging, etc), XML-RPC and JSON. Licensed under GPLv2. Visit the developer center with guides, tutorials, and examples at www.genivia.com/dev.html The documentation of the toolkit, libraries, plugins and more is available at www.genivia.com/docs.html Commercial-use licenses and expert technical support services are available at competitive pricing levels, please visit www.genivia.com/products.html

Ice Messenger is a small Chat, where you talk about something with your friends our other people. Ice Messenger you can allready use at your office and other places. It has written in Java and so you can use it one all platforms which can use Java. Here are a few: Windows, Linux, Unix, Solaris, Macintosh and more. This application is in the first version and so it has much of errors and other bugs! Describe your bugs and errors in the forum.

Simple Peer to Peer instant messenger is a lightweight IM project. By no way is it ready for prime time or atleast useable in everyday situations. It's more of a technical demo, rather than anything of a program.

Underground IM is a free Java Instant Messaging solution. Both a client and a server are available. Underground IM is open source software distributed free of charge under the terms of the GNU General Public License. *Public Server: 64.94.101.216:5632

The BeOS Instant Messaging Kit project aims to create a BeOS-centric, generic instant messaging servuice for workstations. The system will follow the BeOS kits/servers model, and different IM protocols will be supported through add-ons to the im_server,

Java Instant Message (IM) Library, Client and Tools. Flexible framework to design your own. AIM, ICQ, Yahoo, MSN, Jabber, SMS, Nate, GoogleTalk. GUI, spell checking and more. Includes a web interface for remote/cell access. Mac, Win, Linux friendly

An instant messenger for phpNuke web portal systems.

The LanChat Messenger is a series of batch files that interatct together to form a system in which you can communicate with other machines on your network as long as the machine can map a network drive, execute batch files, and change files and folders. The Lanchat Messenger was inspired from another work of messaging, it was extremely simple and easy to use. My messenger works towards the same goals with the advantage of customizable features and adaptable windows.

The PlanetaMessenger.org Libraries project is a set of open source instant messenger libraries used and maintained by PlanetaMessenger.org. You can find protocol implementation for MSN, ICQ, ComVC networks for use on standalone and server applications.

SimplissIM is a simple instant messenger for local networks where people want to chat, not tweak their software settings. Automatic presence, no server needed, no list of contact to maintain (people appear automatically), seamless file sending...

TCSystem provides platform independent c++ framework for streams, templates, threading and networking. It also includes a FOX based MSN Messenger and a file syncronisation program. With version 1.4 an OpenAL based Audio module was started.