Java Messaging Platforms

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Browse free open source Java Messaging Platforms and projects below. Use the toggles on the left to filter open source Java Messaging Platforms by OS, license, language, programming language, and project status.

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  • 1
    Telegram for Android

    Telegram for Android

    Telegram messenger for Android

    Telegram is a wonderful and private messaging app that offers simple, fast, secure and synced messaging for all your devices. It delivers messages faster than any other application; cloud-based so you can access your messages from any device; and very secure, with messages heavily encrypted and could even self-destruct. Telegram is simple and fun to use, with powerful photo and video editing tools as well as an open sticker/GIF platform to let you express yourself fully. It’s also incredibly powerful. Whether you’re setting up a group chat for up to 200,000 members or sharing large videos or documents, Telegram is up to the task. Best of all it’s completely free and open source, with no ads or subscription fees.
    Downloads: 6 This Week
    Last Update:
    See Project
  • 2
    QKSMS

    QKSMS

    A beautiful SMS messenger for Android

    Fall in love with texting all over again with QKSMS! QKSMS is a beautiful, simple and customizable open source replacement to the stock messaging app on Android. It's got a clean, clutter-free intuitive design that lets you focus on what matters, plus millions of colors to choose from to make the theme of the entire app truly your own. QKSMS has some powerful features, including photo sharing, group chat, conversation blocking, message backup and restore and more. It's got everything you need from a text messaging app, plus all the fun features that make for a great text messaging experience. Simply put, QKSMS makes texting magical again, just the way it should be!
    Downloads: 4 This Week
    Last Update:
    See Project
  • 3
    Signal Server

    Signal Server

    Server supporting the Signal Private Messenger applications on Android

    Signal Server is the official backend server component that supports the Signal Private Messenger ecosystem on Android, iOS, and desktop platforms, serving as the trusted message relay, contact discovery, and push notification hub while the clients handle end-to-end encryption. Built in Java and licensed under the AGPL-3.0 license, this server software handles protocols for delivering encrypted messages, synchronizing user metadata like public keys and push tokens, and providing REST and service APIs for the client apps to interact with. Although cryptographic operations and message confidentiality are managed by the client side using the Signal Protocol, the server ensures message routing, user registration, and group updates without having access to the decrypted contents. Its codebase is public to ensure transparency and auditability for a security-focused community willing to inspect how message metadata and delivery mechanisms are implemented.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 4
    Kraken XMPP IM Gateway
    Kraken is a continuation of the Openfire IM Gateway plugin, but in a way that works for any XMPP server. It provides a way for XMPP users to log into, and communicate through, their legacy IM accounts such as AIM, ICQ, MSN, Yahoo, and friends.
    Downloads: 2 This Week
    Last Update:
    See Project
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  • 5
    GOIM is a Jabber client with special features targeted at gamers. It is based on the eclipse rcp and will include all major jabber features in addition to displaying who in the roster is playing which game on which server and other game related features.
    Downloads: 9 This Week
    Last Update:
    See Project
  • 6
    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.
    Downloads: 9 This Week
    Last Update:
    See Project
  • 7
    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.
    Downloads: 8 This Week
    Last Update:
    See Project
  • 8
    Underground IM - Java Instant Messenger

    Underground IM - Java Instant Messenger

    Underground IM is a free Java Instant Messaging solution.

    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
    Downloads: 8 This Week
    Last Update:
    See Project
  • 9
    Hanasu

    Hanasu

    A P2P Messenger which uses JXTA. It provides secure RSA/AES end-to-end

    Does not work because there is no master server! A P2P Messenger which uses JXTA. It provides secure RSA/AES end-to-end encryption and VoIP-Capabilities.
    Downloads: 7 This Week
    Last Update:
    See Project
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  • 10
    This project provides a basic Java implementation of the OSCAR protocol, used by ICQ and AIM clients. Commonly used features such as messaging, status and server buddy lists are supported, making it easy for developers to use this in their own work.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 11
    GO Social
    All in one social network browser app provides easy access to all social networks and other useful applications in one application which makes it easy to share your most recently used apps. It includes applications such as G Mail, Messenger, Whats App, Google Drive, Google Slides, Google Duo and much more. Simultaneously it lets you access all the application. Disclaimer:- All websites featured in the app have gone through a permission process.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 12
    Smoke Crypto Chat Messenger for Android

    Smoke Crypto Chat Messenger for Android

    Smoke: Android Crypto Chat Messenger

    Smoke is an encrypting chat messenger for Android written in Java. Please read the Web site for more information: https://textbrowser.github.io/smoke/ (original, current) https://www.amazon.com/dp/3752691999/ https://smokeappope.sourceforge.io/ (old, third party archive) Smoke App OPE - Open Personal Encryption Download Android APK Installer: https://sourceforge.net/projects/smokeappope/files/ Smoke Source: https://github.com/textbrowser/smoke SmokeStack Source: https://github.com/textbrowser/smokestack (Android) https://github.com/textbrowser/spot-on (Desktop) Smoke appears to be one of the first projects with an open source mobile encrypting chat server., an decentralized and easily-configurable chat server. Smoke is known as the first mobile McEliece Messenger: https://tarnkappe.info/artikel/english/mceliece-messaging-smoke-crypto-chat-the-first-mobile-mceliece-messenger-published-as-a-stable-prototype-worldwide-279847.html
    Downloads: 5 This Week
    Last Update:
    See Project
  • 13
    OpenYMSG
    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.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 14
    An open-sourced all-in-one messenging client. The client includes AOL OSCAR, IRC, MSN Messenger, Yahoo! Messenger, and ICQ (OSCAR). Written in Java for cross-platform support.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 15
    Instant Messenger compatible with ICQ and gadu-gadu ---- written in Java ---- user interface based on WingS component set
    Downloads: 3 This Week
    Last Update:
    See Project
  • 16
    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.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 17
    Java YMSG instant messenger using the JYMSG API. Works on both Windows and Linux.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 18
    This web service developped in Java provides WebForum services on the IMAP4/POP3 protocol : you don't need database, and common messaging tool like Netscape Messenger or Outlook permits to create/delete new forum and to moderate messages.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 19
    ZIM-Pro - A P2P Instant Messenger based on Jxta Technology. Its features: Search for users by key words and location and add to contact list. Secure Messaging, Chatting, and File sharing, Invite offline users through E-mail, Message archiving, etc...
    Downloads: 2 This Week
    Last Update:
    See Project
  • 20

    Ciphero

    Secure communication software

    Securely cipher your message or file, share it, safely de-cipher it.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 21

    Facebook Chat IM

    Facebook Chat Desktop Messenger

    Facebook Chat IM is a Desktop Messenger for Facebook. With it you can chat with all your Facebook friends directly from your Desktop. It has a simple and easy to use interface and offers many great features such as emoticon, status update notification, sound alerts, chat history and much more. It’s written in Java and released under the GNU LGPL.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 22
    Jabber JIM - Java Instant Messenger
    This project is no longer active...
    Downloads: 1 This Week
    Last Update:
    See Project
  • 23
    A server-free chat for local networks.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 24

    SKIM

    An instant messenger completely written in Java

    SKIM is an easy-to-use instant messenger completely written in Java. SKIM is open source and published under the GNU General Public License (GPL).
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    A simple an easy to use Instant Messenger application to use on networked computers. Minimal to no setup required.
    Downloads: 0 This Week
    Last Update:
    See Project
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