Open Source Java Messaging Platforms - Page 3

The Java (All-in-one) Instant Messenger

Java Instant Messenger (or JIM) is an application to allow instant messaging over a network. JIM does not have a centralized server. Instead, users run the server on one of the computers on the network and other users connect to that server.

a java based LAN messenger CHECK OUT AND SUPPORT MY LATEST ANDROID PROJECTS IN HERE: https://play.google.com/store/apps/developer?id=Deepak+PK

Our project is an instant messenger developed in Java, using Jabber protocol. It´s being made as a project for Software Engineering at the Universidad Complutense de Madrid by 20 students.

Instant Messenger compatible with ICQ and gadu-gadu ---- written in Java ---- user interface based on WingS component set

Low Bit-Rate Instant Messenger for Voice and Text using SIP and XMPP.

This is a instant messenger written by java, based on OSGi.It use another project ----Mxl-OSGi, a XMPP lib

KDIM is a lightweight instant messaging program with client and server capabilities that is written in Java.

LameMessenger is a multiple-protocol Instant Messenger client written in Java.

A CrossPlattform Instant Messenger written in Java, brings its own small Server and allows people to communicate in a LAN with static IP-Adresses. Current release has support for ICQ and AIM, more will follow. Want to contribute? Mailto project admin.

Lightweight Mobile Instant Messenger is a Java platform-independent software to allow instant messaging between Mobile Phones and PCs. Specifically designed graphic-poor and with a low-bandwidth usage for use on a Internet WAP/GPRS connection.

This is a Instant Messenger for mobile(j2me enabled), Currently Supporting Jabber protocol.

MulticastCommunicator is a multicast-based peer-to-peer instant messenger, which allows rapid file distribution, text chat and data exchange within a multicast group, e.g. a LAN. It is written in Java and uses an easily-extensible message chain concept.

Nestor is a chat client that allows all the standard functionality of most instant messaging software. However, it also determines words in the conversation that the user may not completely understand, perhaps before the user realizes their confusion

Novel Insight Inner Circle is a message and file encryption tool for Windows. The software is developed in Java and requires 64bit Java JRE. The encryption uses AES-256 twice so it is harder to crack than the industry standard pure AES 256bit implementation (theoretical key size is 512 bit). The software writes encrypted data in ASCII text format which can be cut'n'pasted to messaging apps or to emails and back to Inner Circle when decrypting data. IMPORTANT: The software requires new OpenJDK 16 (Not Oracle's J2RE 1.8) to run. Install, for example, AdoptOpenJDK for Windows. NOTE: By using encryption twice the implementation is (in theory) vulnerable to Meet-In-The-Middle attack reducing key size to 256bit but the attack still requires 2^256 bytes of memory making it impossible in practice.

OpenYMSG is an open source Yahoo Messenger API implementation. It began as a fork of jYMSG, primarily to upgrade the API. It is intended to get you up and running with a simple Yahoo Messenger client in very little time.

Send XMPP (Gtalk/Google Talk also supported) messages (thanks to Jabber) within a single line of PL/SQL code, get buddies list and status in relational tables (or xml) on Oracle 11g.

A Peer to Peer Instant Messenger written in Java. Multicasting is used to communicate without a server and all messages are sent directly from client to client.

P2PChat is a instant messenger based on Java, JavaFX and direct IP connections.

Multi platform, good looking Instant Messenger Client.

PlanetaMessenger.org is a Instant Messenger with support to all well known instant messenger networks including ICQ,MSN,AIM,Yahoo! and Jabber through a powerfull plugin engine. PlanetaMessenger.org support multiples look and feels, plugins and profiles.

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.

IPTalk is a LAN messenger for Windows and Linux OS. It allows users to chat, transfer files over LAN. Main Features are: Threaded message broadcasts Chat logging Fast file transfer A great UI

RTalk is an instant messenger chat client based on Rediff Bol protocol. This client is written in Java, so as to run on platforms where the official client is not supported. This project is not affiliated with Rediff.com.

Riot Android is the original Android client for the Matrix network — a decentralized, secure communication protocol — that enables users to send end-to-end encrypted messages, join rooms, conduct voice and video calls, and interact across federated communities without relying on centralized servers. As the predecessor to Element X, Riot Android laid the groundwork for mobile access to Matrix while providing advanced features like threaded replies, rich media handling, room moderation, and custom notification controls. It integrates tightly with Android’s native platform capabilities, offering background sync, push notifications, and account management while keeping user cryptographic keys secure on the device for privacy. Users appreciate Riot’s ability to join public or private communities hosted across different Matrix servers, making it useful for both personal and organizational communication with interoperability at its core.