Showing 109 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: 1,053 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: 94 This Week
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  • 3
    Koishi

    Koishi

    Cross-platform chatbot framework made with love

    Koishi is a cross-platform chatbot framework built for extensibility, performance, and practical bot management. It lets users create chatbots for platforms such as QQ, Telegram, Discord, Feishu, and other messaging services. The project includes a web console that makes setup, monitoring, plugin installation, and behavior control easier for non-expert users.
    Downloads: 0 This Week
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  • 4
    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: 3 This Week
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  • 5
    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: 21 This Week
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  • 6
    Halloy - IRC Client

    Halloy - IRC Client

    IRC application written in Rust

    Halloy is an open-source IRC client written in Rust, utilizing the Iced GUI library. It aims to provide a simple and fast client for Mac, Windows, and Linux platforms
    Downloads: 11 This Week
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  • 7
    ArmCord

    ArmCord

    ArmCord is a custom client designed to enhance your Discord experience

    ArmCord is a custom client designed to enhance your Discord experience while keeping everything lightweight. ArmCord is built as a standalone client and doesn't rely on the original Discord client in any way. Enjoy Vencord, Shelter and their many features, or have a more vanilla experience, it's your choice! ArmCord natively supports theming of the entire app, you can easily import BetterDiscord themes and manage them. ArmCord automatically blocks all of Discord's trackers; even without any...
    Downloads: 183 This Week
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  • 8
    Kirara AI

    Kirara AI

    DIY multimodal AI chatbot

    ...The project can work with model providers such as OpenAI, DeepSeek, Claude, Gemini, Qwen, Mistral, Kimi, Minimax, and others. It also supports image generation models, voice replies, cross-platform message sending, and custom workflows. A WebUI helps users manage models, workflows, plugins, and platform settings without editing every detail manually. Kirara AI is especially useful for users who want a configurable AI bot that can run across multiple messaging environments.
    Downloads: 0 This Week
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  • 9
    YABDP4Nitro

    YABDP4Nitro

    Yet Another BetterDiscord Plugin for Nitro features

    YABDP4Nitro is a BetterDiscord plugin focused on expanding Discord’s local client experience with Nitro-like interface enhancements. It includes options related to screen sharing quality, emoji usage, profile styling, client themes, and other customization features. The project is made for users who already run BetterDiscord and want a single plugin that groups many premium-style visual and usability tweaks. It is not affiliated with Discord, and its functionality may conflict with Discord’s...
    Downloads: 39 This Week
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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: 10 This Week
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  • 11
    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: 9 This Week
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  • 12
    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: 15 This Week
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  • 13
    Element

    Element

    A glossy Matrix collaboration client for the web

    Element, formerly known as Vector and Riot, is a glossy Matrix collaboration client built using the Matrix React SDK. It offers teams, friends and organizations a secure, all in one chat app that is protected from pesky ads and data mining methods. All communications are done through the open global Matrix network, secured with end-to-end encryption. Element gives you all the services you need from a chat app: group chat, video calls, file sharing and more-- all done securely and in total...
    Downloads: 13 This Week
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  • 14
    Chat SDK

    Chat SDK

    A unified TypeScript SDK for building chat bots

    ...It also supports AI streaming patterns for LLM-powered assistants in different chat environments. A CLI can scaffold a minimal Next.js bot app with routes, configuration, dependencies, and environment examples. The SDK is especially useful for teams building cross-platform bots without rewriting the same interaction logic for every service.
    Downloads: 11 This Week
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  • 15
    Online Forever

    Online Forever

    Make Your Discord Account 24/7 Online

    Online Forever is a Python-based utility designed to keep a Discord user account appearing online continuously. It supports custom status text and the main visible status modes, including online, idle, and do not disturb. The project is small, simple, and focused on one purpose rather than being a full Discord automation framework. It can run on any platform that supports Python, which makes it accessible across common desktop and server environments. Because it automates a Discord user...
    Downloads: 0 This Week
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  • 16
    Discordo

    Discordo

    A lightweight, secure, and feature-rich Discord terminal (TUI) client

    Discordo is a lightweight Discord terminal client built for users who prefer a text-based interface. It is written in Go and provides a terminal UI for interacting with Discord from Windows, macOS, Linux, FreeBSD, and other supported environments. The project supports installation through prebuilt binaries, source builds, and several package managers. Users can log in through the app interface, an environment variable token flow, or QR login. A configuration file allows customization of...
    Downloads: 2 This Week
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  • 17
    Psi+

    Psi+

    Psi+ Project — development branch of Psi XMPP client

    Psi is a cross-platform powerful XMPP client designed for experienced users. Psi+ is a development branch of Psi XMPP client. Previously is was a sort of fork but now just consider it as a space for nightly builds.
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    Downloads: 371 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: 13 This Week
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  • 19
    JavaComm

    JavaComm

    Desktop communication tool: chat, telephony, multimedia

    JavaComm is a client–server communication platform offering chat, telephony, screen sharing, conferencing, a media player, and configurable media streams. Users can define and manage their own streams for flexible playback. All server-based communication runs over HTTPS (SSL/TLS), while file transfers are handled directly between users without passing through the server. The JavaComm Server runs on any Jakarta EE Web Profile 10 platform with the required extensions, using Tomcat 10.1.54 as...
    Downloads: 0 This Week
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  • 20
    matterbridge

    matterbridge

    bridge between mattermost, IRC, gitter, xmpp, slack, discord

    ...The project supports bridges between services such as Discord, Slack, Telegram, IRC, Matrix, Mattermost, Microsoft Teams, Rocket.Chat, Twitch, WhatsApp, XMPP, Zulip, and more. It can handle multiple gateways, message edits and deletes, attachments, private groups, and threading when the target platform allows it. Mattermost is not required, despite the project name. matterbridge is useful for communities, open-source teams, and organizations that need cross-platform chat continuity without forcing everyone into one service.
    Downloads: 16 This Week
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  • 21
    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: 13 This Week
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  • 22
    EiskaltDC++

    EiskaltDC++

    Program for filesharing using Direct Connect and ADC protocols

    EiskaltDC++ is a cross-platform program that uses the Direct Connect and ADC protocols. It is compatible with DC++, FlylinkDC++, LinuxDC++ and other DC clients. EiskaltDC++ also interoperates with all common DC hub software.
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    Downloads: 95 This Week
    Last Update:
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  • 23

    LiteMessage

    A lightweight, peer-to-peer messaging program.

    A lightweight peer-to-peer messaging program that runs in the console. It also has a GUI version. It is currently very early in development. It is implemented in Java, so it is cross-platform. Currently developed using Java 8 (aka 1.8) It is distributed under the 3-clause BSD license. Planned features in the future include message encryption and file transfers. The most up-up-to-date source can be found on GitHub: https://github.com/cguy777/LiteMessage The MTools library can be found here: https://github.com/cguy777/MTools
    Downloads: 0 This Week
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  • 24
    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: 6 This Week
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  • 25
    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: 12 This Week
    Last Update:
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