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Showing 1627 open source projects for "messaging"

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    Tinode Instant Messaging Server

    Tinode Instant Messaging Server

    Instant messaging platform

    Instant messaging server. Backend in pure Go (license GPL 3.0), client-side binding in Java, Javascript, and Swift, as well as gRPC client support for C++, C#, Go, Java, Node, PHP, Python, Ruby, Objective-C, etc. (license Apache 2.0). Wire transport is JSON over websocket (long polling is also available) for custom bindings, or protobuf with gRPC.
    Downloads: 1 This Week
    Last Update:
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  • 2
    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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  • 3
    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: 761 This Week
    Last Update:
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  • 4
    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: 55 This Week
    Last Update:
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  • 5
    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: 25 This Week
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  • 6
    OneSignal-iOS-SDK

    OneSignal-iOS-SDK

    OneSignal is a free push notification service for mobile apps

    OneSignal iOS SDK is a leading solution for implementing push notifications, in-app messaging, and customer engagement features in iOS apps. It offers a rich set of tools for targeted messaging, user segmentation, and analytics. OneSignal is widely used for improving user retention and delivering personalized content directly to users.
    Downloads: 52 This Week
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  • 7
    Signal

    Signal

    A private messenger for Android

    Signal-Android is the official open-source Android client for Signal, a secure messaging app focused on end-to-end encryption and privacy. Developed by the Signal Foundation, it enables private messaging, voice, and video calls, without storing user data. Signal uses the Signal Protocol for encryption and does not collect metadata, making it one of the most privacy-focused communication platforms available.
    Downloads: 14 This Week
    Last Update:
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  • 8
    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: 78 This Week
    Last Update:
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  • 9
    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: 11 This Week
    Last Update:
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  • 10
    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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  • 11
    Session for Android

    Session for Android

    A Decentralized, Onion Routed, Private Messenger

    Session Android is the official mobile client for Session, a privacy-first messaging protocol that enables secure, anonymous messaging without requiring phone numbers, email addresses, or centralized user accounts. Built natively for Android, the app lets users send and receive end-to-end encrypted text messages, voice notes, images, and attachments in both one-on-one and group chats, all while routing data through a decentralized onion-routing network designed to protect not just message content but also metadata like sender ID, timing, and network location. ...
    Downloads: 31 This Week
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  • 12
    pulse-sms-desktop

    pulse-sms-desktop

    The official MacOS, Windows, and Linux clients for Pulse SMS

    ...Desktop notifications alert users to incoming messages without keeping a browser tab open. Additional settings include private conversations, notification snoozing, and customizable messaging preferences. Built with Electron, the client supports Windows, macOS, and Linux. Its GitHub repository distributes application releases, while the source code is maintained separately.
    Downloads: 3 This Week
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  • 13
    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: 262 This Week
    Last Update:
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  • 14
    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: 42 This Week
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  • 15
    Ricochet Refresh

    Ricochet Refresh

    Anonymous peer-to-peer instant messaging

    Ricochet Refresh is an anonymous instant messaging application that uses the Tor network to establish direct connections between users. It is designed to reduce exposure of personal identities, IP addresses, and communication metadata. Each user operates a Tor onion service that other contacts can connect to. Conversations take place through peer-to-peer connections rather than a centralized messaging server.
    Downloads: 4 This Week
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  • 16
    Status Desktop

    Status Desktop

    Status Desktop client made in Nim & QML

    Status Desktop is a client application developed in Nim and QML, providing a secure and private communication platform that integrates messaging, cryptocurrency wallet, and Web3 browser functionalities.
    Downloads: 63 This Week
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  • 17
    BlueBubbles

    BlueBubbles

    A cross-platform app ecosystem, bringing iMessage to Android, PC

    ...Optional private API integration enables additional capabilities, including typing indicators, message effects, and advanced group management. Users can personalize the interface with themes and different visual styles. Built with Flutter, BlueBubbles provides cross-platform messaging while retaining the Mac-based infrastructure required for iMessage connectivity.
    Downloads: 6 This Week
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  • 18
    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: 114 This Week
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  • 19
    Commet

    Commet

    Your space to connect

    Commet is a free, open-source Matrix messaging client designed for private, secure, and accessible communication. It combines a straightforward interface with modern messaging capabilities. Users can connect multiple Matrix accounts and organize conversations through rooms and Spaces. End-to-end encryption protects message contents, while emoji verification and cross-signing help establish trusted devices.
    Downloads: 2 This Week
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    See Project
  • 20
    FluffyChat

    FluffyChat

    The cutest instant messenger in the [matrix]

    FluffyChat is a free, open-source instant messaging application built on the decentralized Matrix communication protocol. Developed with Flutter, it provides a modern messaging experience across mobile, desktop, and web platforms. Users can exchange text messages, images, documents, voice recordings, and other media through private or group conversations. The application supports end-to-end encryption to protect message contents and provides encrypted chat backups.
    Downloads: 3 This Week
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    See Project
  • 21
    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: 9 This Week
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    See Project
  • 22
    qaul.net

    qaul.net

    Internet Independent Wireless Mesh Communication App

    qaul.net is a decentralized communication platform designed to function independently of traditional internet infrastructure. It facilitates peer-to-peer messaging and file sharing over wireless mesh networks, making it ideal for scenarios where internet access is unreliable or unavailable. By leveraging mesh networking, qaul.net ensures that users can maintain communication even in isolated or disrupted environments.​
    Downloads: 122 This Week
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  • 23
    Mixin Messenger

    Mixin Messenger

    Mixin Messenger desktop app for macOS, iPadOS, Linux, and Windows

    ...The application also provides message delivery indicators, contact management, and sticker sharing. Unlike the mobile wallet, the desktop version focuses on encrypted messaging rather than cryptocurrency management.
    Downloads: 10 This Week
    Last Update:
    See Project
  • 24
    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: 42 This Week
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    See Project
  • 25
    deltachat-desktop

    deltachat-desktop

    Decentralized private messenger with chat-shared tools and games

    deltachat-desktop is an open-source, decentralized messaging application that enables private communication through email-based messaging infrastructure. It provides a familiar instant messaging interface while using interoperable standards instead of relying on a centralized messaging platform. Conversations are protected with end-to-end encryption designed to safeguard messages against unauthorized access.
    Downloads: 1 This Week
    Last Update:
    See Project
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