Showing 173 open source projects for "messenger"

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  • 1
    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. ...
    Downloads: 5 This Week
    Last Update:
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  • 2
    signal-cli

    signal-cli

    signal-cli provides a commandline, dbus and JSON-RPC interface

    signal-cli is a command line interface for the Signal messenger. It supports registering, verifying, sending and receiving messages. signal-cli uses a patched libsignal-service-java, extracted from the Signal-Android source code. For registering you need a phone number where you can receive SMS or incoming calls. signal-cli is primarily intended to be used on servers to notify admins of important events.
    Downloads: 22 This Week
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  • 3
    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...
    Downloads: 15 This Week
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  • 4
    Atmosphere

    Atmosphere

    Real-time transport layer for Java AI agents

    ...A single agent can be exposed over WebSocket, Server-Sent Events, long polling, gRPC, and WebTransport over HTTP/3 depending on the modules included. It also supports agent-facing protocols such as MCP, A2A, and AG-UI, along with external messaging channels such as Slack, Telegram, Discord, WhatsApp, and Messenger. The project is built for teams that need AI agents to behave like production services instead of simple chat demos. It is useful for JVM developers who want portable, observable, real-time AI agent endpoints across multiple clients and protocols.
    Downloads: 4 This Week
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  • 5
    Facebook SDK for Android

    Facebook SDK for Android

    Used to integrate Android apps with Facebook Platform

    This open-source library allows you to integrate Facebook into your Android app. Integrate your Android app with Facebook to build engaging social apps by using the Facebook SDK for Android. To learn more about using Facebook development tools. The current version of the Facebook SDK for Android is version 11.2.0 and requires the Android API 15. Code and samples for the Facebook SDK for Android are available on GitHub. A secure and convenient way for people to log into your app or website by...
    Downloads: 9 This Week
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  • 6
    Chat4Us-Creator

    Chat4Us-Creator

    A lightweight intelligent chatbots creator platform.

    Chat4Us-Creator is a lightweight open-source cross-platform chatbots creator that handle Q/A and AI-driven conversations. Escalate to human agents when needed through a messenger app. Chatbots can be created using the graphic nodes editor from basic to advanced chat flows with the ability to connect them either to local/offline LLMs using GPT4All/Ollama or external API providers like OpenAI, DeepSeek or Groq. Requires Java (JRE) 21 or higher installed. Default authentication password: a123456/*
    Downloads: 0 This Week
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  • 7
    Smoke Crypto Chat Messenger for Android

    Smoke Crypto Chat Messenger for Android

    Smoke: Android Crypto Chat Messenger

    ...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
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    Downloads: 5 This Week
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  • 8
    KryptEY

    KryptEY

    Android keyboard for secure E2EE communication

    KryptEY is a secure, privacy‑focused Android keyboard that implements the Signal Protocol (X3DH + Double Ratchet) directly in the keyboard layer. It enables end-to-end encrypted messaging within any app—without relying on external servers—ensuring that key exchanges and message encryption happen locally, maintaining Signal-level security across platforms.
    Downloads: 7 This Week
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  • 9
    Business Bot Platform

    Business Bot Platform

    Chatbot platform for various instant messenger

    The Business Bot Platform (BBP) - Community Edition is a chatbot platform for private and professional chatbots. It provides support for Facebook Messenger, Signal, Slack, Telegram, Microsoft Skype for Business, Threema and XMPP. The Business Bot Platform Community Edition provides a software solution for chatbot applications developed with Java. It is designed to be easy to use (pluggable chatbots) and extensible as well as integrate in your chatbot application without knowledge about various instant messenger APIs. ...
    Downloads: 0 This Week
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  • 10
    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...
    Downloads: 3 This Week
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  • 11
    IXSF Messenger

    IXSF Messenger

    IXSF Messenger is a java-based messenger

    IXSF Messenger is a java-based messenger with file transfer option. Java Runtime Environment (JRE) 1.4 or higher is required. This application is built in two parts - server and client. Server part serves client's requests.
    Downloads: 0 This Week
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  • 12
    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: 0 This Week
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  • 13
    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: 1 This Week
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  • 14
    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.
    Downloads: 0 This Week
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  • 15
    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: 2 This Week
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  • 16
    This is a java based LAN messenger with file transfer support, chat and even a simple LAN game
    Downloads: 0 This Week
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  • 17
    MEMZIT :: advanced messages

    MEMZIT :: advanced messages

    modifiable, predefined selection lists 4 clarity, efficacy, efficiency

    ...D) The system recognizes modifications immediately, and asks for "use once & discard" or "use & add to the list" E) This "communication-system" shall be made available for all major information-transmitting channels, like - email - whats up & other instant messenger
    Downloads: 0 This Week
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  • 18
    Project-Connect

    Project-Connect

    Just another LAN messenger

    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
    Downloads: 0 This Week
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  • 19
    EZ Intranet Messenger is designed to work within a LAN segment, without the presence of centralized server. Its primary goal is to provide instant messaging service, along with online status notification, file transmission, and real time public chat.
    Downloads: 3 This Week
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  • 20
    Agilo™

    Agilo™

    Agilo™ - The Agile Enforcement Office Suite

    When it comes to Agile Project Management, some high performing tools are acting a vital role for projects success. AGILO is pretend to be one of the best agile tools present in the market which intends to manage all the project related activities like (user stories, iteration, burn down charts, resource load, standup meetings, backlog etc.) performed in an Agile project Development. It allows you to plan and track the progress of your development cycle on the fly by giving you the...
    Downloads: 0 This Week
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  • 21
    Client for Game Masters (of a RPG) to control a Game session using Y! Messenger Protocol. This allows GM to talk to the whole group, a sub-group (or individual), etc. and helps her to have a centralized GUI, while players can connect normally to Y! Msgr.
    Downloads: 0 This Week
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  • 22
    Chatna Messenger

    Chatna Messenger

    Chat Messenger written in Java

    Chat Messenger written in Java using sockets, contains a server-side app and a client-side app connecting to a SQLite DBMS Programmed by a group of Egyptian ITIians from Intake 33 * Sherif Mosa * Yosrah Ibrahim * Mostafa Magdy * Yasmin Abd Elhameed
    Downloads: 0 This Week
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  • 23
    JClaim
    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
    Downloads: 0 This Week
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  • 24

    Azonto Messenger

    Cross-Platform Mobile Messaging Application

    Azonto is a Cross-Platform Mobile Messaging Application that allows users to share images, songs, videos, create and add each other to groups. It is for the trendy who wants to be on top of the mobile messaging game.
    Downloads: 0 This Week
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  • 25
    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: 0 This Week
    Last Update:
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