Showing 51 open source projects for "cross-platform"

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  • 1
    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: 1,159 This Week
    Last Update:
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  • 2
    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. ...
    Downloads: 100 This Week
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  • 3
    MobileIMSDK

    MobileIMSDK

    The original full-platform IM communication layer framework

    MobileIMSDK is a lightweight cross-platform instant messaging communication framework designed for real-time chat and push-style communication. It supports multiple client platforms, including iOS, Android, Java, HTML5, mini programs, UniApp, and HarmonyOS Next, with a Netty-based server side. The framework is notable for supporting UDP, TCP, and WebSocket protocols in the same open-source IM communication layer.
    Downloads: 0 This Week
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  • 4
    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: 10 This Week
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  • 5
    Caprine

    Caprine

    Elegant Facebook Messenger desktop app

    Caprine is an unofficial and privacy-focused Facebook Messenger app with many useful features. Caprine is feature complete. However, we welcome contributions for improvements and bug fixes. Dark theme, Vibrant theme, privacy-focused, keyboard shortcuts, menu bar mode, work chat support, code blocks, touch bar support, and custom styles. macOS 10.10+, Linux, and Windows 7+ are supported (64-bit only). For taskbar notification badges to work on Windows 10, you'll need to enable them in Taskbar...
    Downloads: 13 This Week
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  • 6
    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: 1 This Week
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  • 7
    Fluxer

    Fluxer

    A free and open source instant messaging and VoIP platform

    Fluxer is a free and open-source instant messaging and VoIP platform designed to provide communities, friend groups, and teams with a self-hostable communication alternative. The project combines real-time chat, voice calling, and community features into a unified system that can be deployed independently rather than relying on centralized proprietary services. It is built with a modern TypeScript stack and focuses on delivering a clean user experience alongside flexible infrastructure options for developers who want control over their communication environment. ...
    Downloads: 9 This Week
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  • 8
    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: 69 This Week
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  • 9
    SimpleX

    SimpleX

    The first messaging platform operating without user identifiers

    Other apps have user IDs: Signal, Matrix, Session, Briar, Jami, Cwtch, etc. SimpleX does not, not even random numbers. This radically improves your privacy. The video shows how you connect to your friend via their 1-time QR-code, in person or via a video link. You can also connect by sharing an invitation link. Temporary anonymous pairwise identifiers SimpleX uses temporary anonymous pairwise addresses and credentials for each user contact or group member. It allows to deliver messages...
    Downloads: 32 This Week
    Last Update:
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  • 10
    Telegram for Android

    Telegram for Android

    Telegram messenger for Android

    ...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: 12 This Week
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  • 11
    Tock

    Tock

    Tock, the open source conversational AI toolkit

    ...Program complex stories using Kotlin, Python or Node.js provided components, or integrate with any language by leveraging Tock APIs. Try Tock online, deploy in minutes using Docker running configurations, or setup your own platform to the Cloud, On-Premise, even embedded. More and more teams and companies trust in Tock and open conversational platforms. Built-in connectors for numerous text/voice channels, Messenger, WhatsApp, Google Assistant, Alexa, Twitter and more.
    Downloads: 0 This Week
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  • 12
    Element Android

    Element Android

    A glossy Matrix collaboration client for Android

    Element Android is a glossy Matrix collaboration client for Android, based on a new Android SDK fully written in Kotlin. A total rewrite of Riot-Android, Element is an all-in-one secure chat app made possible through the open global Matrix network. It is a messenger that allows users to talk to anyone regardless of their app, while providing unparalleled privacy and security. It protects conversations from data-mining and ads with proper end-to-end encryption, so you can feel totally...
    Downloads: 2 This Week
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  • 13
    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.
    Downloads: 0 This Week
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  • 14
    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: 2 This Week
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  • 15
    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...
    Downloads: 1 This Week
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  • 16
    Element iOS

    Element iOS

    A glossy Matrix collaboration client for iOS

    Element iOS is the official iPhone and iPad client for the Element communication platform, which is built on the Matrix open standard for secure, federated messaging and collaboration. The app provides users with a rich environment for encrypted messaging, group chats, voice and video calls, file attachments, and room creation, all while interoperating seamlessly with the wider Matrix network — meaning you can communicate across servers and services that adopt the same protocol. ...
    Downloads: 0 This Week
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  • 17
    AI Chatbot Framework

    AI Chatbot Framework

    Python chatbot framework with Natural Language Understanding

    ...The smooth UI makes it effortless to create and train conversations to the bot and it continuously gets smarter as it learns from conversations it has with people. AI Chatbot Framework can live on any channel of your choice (such as Messenger, Slack etc.) by integrating it’s API with that platform. You don’t need to be an expert at artificial intelligence to create an awesome chatbot that has AI capabilities. With this boilerplate project you can create an AI-powered chatting machine in no time.
    Downloads: 0 This Week
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  • 18
    bitchat

    bitchat

    bluetooth mesh chat, IRC vibes

    bitchat is a decentralized peer-to-peer messaging app that operates over Bluetooth mesh networks, enabling local group chats without the need for internet, servers, or phone numbers. It is designed with privacy and security in mind, offering encrypted private messages and channels alongside a public local chat that requires no registration.
    Downloads: 12 This Week
    Last Update:
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  • 19
    Chaskiq

    Chaskiq

    Full featured live chat, support & marketing platform

    ...We have developed a text editor that allows us to send messages worthy of the year 2022, this means going beyond markdown format and taking messaging to the extreme. Gifs, Videos, Embeds and a long etcetera. Chaskiq is an open source platform that connects and empowers the communication of support, sales & marketing teams with their customers.
    Downloads: 0 This Week
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  • 20
    EOL Rambox CE

    EOL Rambox CE

    Free and Open Source messaging and emailing app

    Free, Open Source and cross-platform messaging and emailing app that combines common web applications into one.
    Downloads: 0 This Week
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  • 21
    IGdm Messenger

    IGdm Messenger

    Desktop application for Instagram DMs

    Multi-platform Desktop application for Instagram DMs, built with electron Build Status! To setup this project locally for development purposes please follow the following steps. Ensure you Node.js installed. Clone this repo by running the command - git clone. Navigate to the directory where the repo is cloned to. (e.g cd igdm). Run npm install to install all the dependencies.
    Downloads: 1 This Week
    Last Update:
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  • 22
    Messaging APIs

    Messaging APIs

    Messaging APIs for multi-platform

    Messaging APIs is a mono repo that collects APIs needed for bot development. It helps you build your bots using a similar API for multiple platforms, e.g. Messenger, LINE. Learn once and make writing cross-platform bots easier. If you are looking for a framework to build your bots, Bottender may suit for your needs. It is built on top of Messaging APIs and provides some powerful features for bot building.
    Downloads: 0 This Week
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  • 23
    tiledesk

    tiledesk

    The no-code platform to automate conversations

    Downloads: 0 This Week
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  • 24
    YakYak

    YakYak

    Desktop chat client for Google Hangouts

    Yakyak is an open-source, unofficial Hangouts desktop client built in CoffeeScript and Electron/Node.js. It emulates an iOS device to connect to Google Hangouts APIs, enabling messaging, status indicators, and notifications on Windows, macOS, and Linux—eliminating the need for a Chrome-based Hangouts app.
    Downloads: 0 This Week
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  • 25
    cabal-cli

    cabal-cli

    Terminal client for Cabal, the p2p chat platform

    cabal-cli is a terminal-based client for Cabal, a peer-to-peer chat platform that operates without centralized servers. It allows users to create and join decentralized chat channels, ensuring privacy and resilience against censorship. The CLI interface provides a lightweight and efficient means of communication, particularly suited for developers and tech-savvy users.​
    Downloads: 0 This Week
    Last Update:
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