Showing 927 open source projects for "messaging"

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  • 1
    LINE Messaging API SDK for Java

    LINE Messaging API SDK for Java

    LINE Messaging API SDK for Java

    The LINE Messaging API SDK for Java makes it easy to develop bots using LINE Messaging API, and you can create a sample bot within minutes.
    Downloads: 0 This Week
    Last Update:
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  • 2
    Telegram Desktop

    Telegram Desktop

    Telegram Desktop messaging app

    Telegram Desktop is the official C++/Qt-based cross-platform client for Telegram, implementing the full Telegram API and MTProto protocol for secure messaging, voice/video calls, file sharing, and chat features. It provides message sync across devices, supports themes, stickers, bots, and is actively maintained.
    Downloads: 509 This Week
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  • 3
    Toxic

    Toxic

    A Tox-based instant messaging and video chat client

    Toxic is a Tox protocol-based command-line messenger for Linux, offering fully encrypted, decentralized, and serverless instant messaging. It includes features such as text messaging, file transfer, and audio calls—all without requiring user accounts or central servers. Toxic is designed for power users who prefer a minimalist interface, operating entirely within a terminal while delivering strong privacy through the Tox peer-to-peer protocol. It’s lightweight, fast, and ideal for use in low-resource or remote systems.
    Downloads: 13 This Week
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  • 4
    Fluxer

    Fluxer

    A free and open source instant messaging and VoIP platform

    ...Fluxer supports typical messaging workflows while also aiming to provide extensibility for plugins and future integrations. Because it is open source, users can inspect, modify, and host their own instance, aligning with privacy-focused and decentralized communication trends.
    Downloads: 15 This Week
    Last Update:
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  • 5
    LINE Messaging API SDK for Python

    LINE Messaging API SDK for Python

    LINE Messaging API SDK for Python

    The LINE Messaging API SDK for Python makes it easy to develop bots using LINE Messaging API, and you can create a sample bot within minutes. You must upload a rich menu image and link the rich menu to a user for the rich menu to be displayed. You can create up to 1000 rich menus for one LINE Official Account with the Messaging API. The LINE Messaging API SDK for Python includes experimental asyncio support.
    Downloads: 0 This Week
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  • 6
    Sideband

    Sideband

    LXMF client for Android, Linux and macOS to communicate with people

    Sideband is a privacy-focused, peer-to-peer mesh messaging protocol and platform that allows users to communicate directly over local networks or the internet without servers. It emphasizes metadata resistance and secure message delivery, working effectively in offline, low-bandwidth, or disaster recovery scenarios. Built-in Rust, Sideband supports encrypted group messaging, file transfers, and network self-discovery.
    Downloads: 11 This Week
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  • 7
    Session Desktop

    Session Desktop

    A Decentralized, Onion Routed, Private Messenger

    Session Desktop is an open-source, privacy-focused messaging application that brings secure, decentralized communication to desktop environments such as Windows, macOS, and Linux, providing users with encrypted text, media, and group chats without requiring phone numbers or email addresses. Built on the Session protocol and the Loki network, it routes messages through a distributed onion-routing network that hides metadata like sender, timing, and location so that conversations are resistant to surveillance and correlation attacks. ...
    Downloads: 34 This Week
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  • 8
    AyuGram Desktop

    AyuGram Desktop

    Desktop Telegram client with good customization and Ghost mode.

    ...Built as a fork of Telegram Desktop, it extends the core experience with advanced features while staying fast and familiar. AyuGram focuses heavily on privacy tools like ghost mode and anti-recall to give users more control over their messaging behavior. The app offers extensive UI and font customization, allowing users to tailor the interface to their personal style. It also includes convenience features such as built-in translation, enhanced media previews, and streamer-friendly options. Available across Windows, macOS, and Linux, AyuGram Desktop is ideal for power users who want a more flexible Telegram experience.
    Downloads: 198 This Week
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  • 9
    WeChatMsg

    WeChatMsg

    Project aimed at extracting, exporting, and analyzing chat records

    WeChatMsg repository hosts an open-source project aimed at extracting, exporting, and analyzing chat records from the WeChat messaging platform. It provides tools that read local WeChat database files and allow users to convert chat data into readable formats such as HTML, Word, and CSV, making it possible to inspect conversations outside the mobile app environment. Beyond simple export, the project includes mechanisms for analyzing chat histories and generating annual reports or visual summaries about messaging trends, interaction patterns, and more. ...
    Downloads: 129 This Week
    Last Update:
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  • 10
    Bitchat

    Bitchat

    Bluetooth mesh chat, IRC vibes

    BitChat is a decentralized, peer-to-peer encrypted messaging app built by Jack Dorsey’s Permissionless Tech. It uses Bluetooth Low Energy mesh networking to relay messages without internet, servers, accounts, or phone numbers. Messages are end-to-end encrypted (Curve25519 + AES‑GCM) and the app includes a panic mode to erase data quickly.
    Downloads: 11 This Week
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  • 11
    Franz 5

    Franz 5

    Franz is a free messaging app for services like WhatsApp, Slack, etc,

    Franz is your messaging app for WhatsApp, Facebook Messenger, Slack, Telegram and many many more. Franz supports a great variety of business and private messaging & chat services like Slack, WhatsApp, WeChat, Messenger, Telegram, Google Hangouts, Skype, Zendesk and many more. It does not matter if you just want to keep in touch with your friends or are managing a multi-seat customer care team.
    Downloads: 7 This Week
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  • 12
    SimpleX

    SimpleX

    The first messaging platform operating without user identifiers

    ...Many communication platforms are vulnerable to MITM attacks by servers or network providers. To prevent it SimpleX apps pass one-time keys out-of-band when you share an address as a link or a QR code. Double-ratchet protocol. OTR messaging with perfect forward secrecy and break-in recovery. NaCL cryptobox in each queue to prevent traffic correlation between message queues if TLS is compromised.
    Downloads: 26 This Week
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  • 13
    Tox

    Tox

    A New Kind of Instant Messaging

    ...It also has no central servers that can be raided, shut down, or forced to turn over data. There are no corporate interests, no hidden agendas-- just simple, secure and easy to use messaging.
    Downloads: 5 This Week
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  • 14
    OpenACP

    OpenACP

    Self-hosted bridge that lets you interact with AI coding agents

    ...OpenACP emphasizes user ownership, since the bridge runs on the user’s machine with the user’s keys and codebase. Its main value is turning messaging apps into practical control surfaces for remote, visible, and multi-agent software development.
    Downloads: 20 This Week
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  • 15
    CIM

    CIM

    Distributed instant messaging system for developers

    CIM(CROSS-IM)A developer-oriented system, provides components to help developers build their own distributed instant messaging system that can be a horizontal scaling IM. CIM is an IM Instant messaging system, can be applied as a message push middleware. IOT Message transparent transmission middleware in massive connection scenarios. Provides flexible horizontal expansion and contraction according to the actual situation. The server automatically removes offline clients. ...
    Downloads: 0 This Week
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  • 16
    Eclipse Mosquitto

    Eclipse Mosquitto

    Eclipse Mosquitto - An open source MQTT broker

    ...Its main value is providing a mature, lightweight, widely adopted MQTT implementation for reliable messaging in constrained and production environments.
    Downloads: 16 This Week
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  • 17
    Apache RocketMQ

    Apache RocketMQ

    Distributed messaging and streaming platform with low latency

    Apache RocketMQ is a distributed messaging and streaming platform with low latency, high performance and reliability, trillion-level capacity and flexible scalability. Messaging patterns including publish/subscribe, request/reply and streaming. Financial grade transactional message. Built-in fault tolerance and high availability configuration options base on DLedger. A variety of cross language clients, such as Java, C/C++, Python, Go.
    Downloads: 1 This Week
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  • 18
    Nicotine+

    Nicotine+

    Graphical client for the Soulseek peer-to-peer network

    ...Built in Python with a Qt-based GUI, Nicotine+ offers a lightweight yet feature-rich experience for users looking to share and discover files in a decentralized, user-governed environment. It includes search capabilities, bandwidth throttling, chat rooms, and user-to-user messaging, supporting a vibrant community of digital collectors and music lovers.
    Downloads: 53 This Week
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  • 19
    MobileIMSDK

    MobileIMSDK

    The original full-platform IM communication layer framework

    ...It has been developed and refined over many years, making it a mature option for teams building custom messaging systems. MobileIMSDK focuses on the communication layer rather than a complete consumer chat app, so developers can build their own user interface and business logic on top of it. It is useful for mobile apps, web apps, enterprise messaging, live communication features, and custom push systems.
    Downloads: 0 This Week
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  • 20
    Signal Desktop

    Signal Desktop

    Private messenger for Windows, Mac, and Linux

    Say "hello" to a different messaging experience. An unexpected focus on privacy, combined with all of the features you expect. State-of-the-art end-to-end encryption (powered by the open source Signal Protocol) keeps your conversations secure. We can't read your messages or listen to your calls, and no one else can either. Privacy isn’t an optional mode, it’s just the way that Signal works.
    Downloads: 28 This Week
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  • 21
    Atomic Chat

    Atomic Chat

    Atomic-Chat is an open source alternative to ChatGPT

    ...The system is designed to go beyond traditional chatbots by allowing the assistant to take real actions across connected tools such as email, calendars, browsers, and file systems, effectively functioning as a task-executing agent rather than a passive responder. It integrates with multiple messaging platforms and communication channels, allowing users to interact with the assistant from environments like web interfaces, messaging apps, or desktop clients. The architecture supports multi-model AI usage, meaning users can choose between different large language models depending on their needs, including cloud-based or local deployments.
    Downloads: 12 This Week
    Last Update:
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  • 22
    Orion Store

    Orion Store

    The ultimate home for modded apps

    ...The platform is built with practicality in mind, giving power users a way to manage app variants and dependents without extra verification steps or tracking. It also integrates with native Android sharing tools so that links and installations can be passed through messaging and share menus seamlessly. While not aimed at novice users, the store helps enthusiasts and testers handle a variety of builds with minimal interruption.
    Downloads: 2,766 This Week
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  • 23
    DiscordChatExporter

    DiscordChatExporter

    Saves Discord chat logs to a file

    DiscordChatExporter is a cross-platform utility that allows users to export Discord chat histories into structured files for archival, analysis, or backup purposes. The tool connects to Discord accounts and retrieves message history from servers, channels, or direct messages, then converts the data into formats such as HTML or JSON. It is designed to preserve message structure, timestamps, attachments, and formatting so exported conversations remain easy to navigate and review. The project...
    Downloads: 55 This Week
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  • 24
    SimpleXMQ

    SimpleXMQ

    A reference implementation of the SimpleX Messaging Protocol

    A reference implementation of the SimpleX Messaging Protocol for simplex queues over public networks. SimpleXMQ is a message broker for managing message queues and sending messages over a public network. It consists of an SMP server, SMP client library, and SMP agent that implements SMP protocol for client-server communication and SMP agent protocol to manage duplex connections via simplex queues on multiple SMP servers.
    Downloads: 0 This Week
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  • 25
    Botonic

    Botonic

    Build chatbots and conversational experiences using React

    Botonic is a full-stack Javascript framework to create chatbots and modern conversational apps that work on multiple platforms, web, mobile and messaging apps (Messenger, Whatsapp, Telegram, etc). Building modern applications on top of messaging apps like Whatsapp or Messenger is much more than creating simple text-based chatbots. Botonic is a full-stack serverless framework that combines the power of React and Tensorflow.js to create amazing experiences at the intersection of text and graphical interfaces. ...
    Downloads: 3 This Week
    Last Update:
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