Showing 71 open source projects for "messaging"

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  • 1
    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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  • 2
    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
    Last Update:
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  • 3
    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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  • 4
    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
    Last Update:
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  • 5
    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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  • 6
    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
    Last Update:
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  • 7
    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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  • 8
    OpenWA

    OpenWA

    Free, Open Source, Self-Hosted WhatsApp API Gateway

    OpenWA is a self-hosted WhatsApp API gateway for developers who want control over their messaging infrastructure without depending on a closed vendor platform. It exposes WhatsApp-related actions through HTTP APIs, making it easier to connect messaging features to custom apps, automations, dashboards, and business workflows. The project supports multiple sessions, so one instance can manage more than one WhatsApp account. It also includes a modern web dashboard for managing sessions, webhooks, and API keys visually. ...
    Downloads: 6 This Week
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  • 9
    nexu

    nexu

    The simplest desktop client for OpenClaw

    nexu is an open-source desktop client that connects AI agents to messaging platforms such as WeChat, Feishu, Slack, and Discord. It is built around OpenClaw and is designed to make agent access available directly inside the chat apps people already use. The project emphasizes a simple graphical setup, double-click installation, built-in skills, multi-model support, and bring-your-own-key configuration.
    Downloads: 50 This Week
    Last Update:
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  • 10
    Memmy

    Memmy

    AI agent & local memory hub for all AI agents

    ...Historical sessions can be imported and converted into searchable long-term memory instead of remaining isolated in separate applications. The runtime supports a desktop app, an interactive CLI, a terminal interface, memory commands, and an OpenAI-compatible API. Skills, MCP servers, browser tools, messaging channels, and productivity integrations extend it from conversation into task execution. Users can choose account-based access or configure their own models and API keys. Memory, configuration, and application state remain on the local machine by default.
    Downloads: 48 This Week
    Last Update:
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  • 11
    Telegram Web A

    Telegram Web A

    Telegram Web A, GPL v3

    ...The project achieved recognition (winning first prize in the Telegram Lightweight Client Contest) and serves as the code base behind the official web client available at web.telegram.org/a. The architecture takes advantage of advanced browser capabilities: WebSockets for real-time messaging, Web Workers and WebAssembly for performance-critical tasks, multi-level caching and PWA features for offline or near-offline usability, voice recording and media streaming, raw binary data handling and cryptographic operations. It also handles rich UI/UX elements such as CSS/Canvas/SVG animations, reactive data streams, etc.
    Downloads: 17 This Week
    Last Update:
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  • 12
    Cinny

    Cinny

    Yet another matrix client

    ...The client also supports common Matrix features such as spaces, multi-account login, threads, and secure messaging patterns that make it competitive with other decentralized IM platforms.
    Downloads: 2 This Week
    Last Update:
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  • 13
    LobsterAI

    LobsterAI

    Your 24/7 all-scenario AI agent that gets work done for you

    ...It also supports remote control through messaging platforms, making it possible to trigger tasks from a phone. LobsterAI is designed for users who want an agent that can actually perform work, not just answer questions.
    Downloads: 3 This Week
    Last Update:
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  • 14
    appwrite

    appwrite

    Secure Backend Server for Web, Mobile & Flutter Developers

    Appwrite is a self-hosted and cloud backend-as-a-service platform that provides developers with all the core APIs required to build any application. Build your entire backend within minutes and scale effortlessly using Appwrite's open-source platform. Add Authentication, Databases, Functions, Storage, and Messaging to your projects using the frameworks and languages of your choice.
    Downloads: 2 This Week
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  • 15
    Hermes Desktop

    Hermes Desktop

    Desktop Companion for Hermes Agent

    ...Its real-time streaming chat interface includes markdown rendering, syntax highlighting, tool progress tracking, and token usage monitoring. Hermes Desktop also integrates messaging platforms, automation features, and customizable personas to create a comprehensive AI productivity environment.
    Downloads: 107 This Week
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  • 16
    Dittofeed

    Dittofeed

    Open-source customer engagement

    An open-source self-hosted alternative to marketing automation platforms like Braze and Iterable, enabling customer engagement workflows.
    Downloads: 1 This Week
    Last Update:
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  • 17
    OpenClaw

    OpenClaw

    Your own personal AI assistant. Any OS. Any Platform.

    OpenClaw (formerly Clawdbot/Moltbot) is an open-source, self-hosted autonomous AI assistant designed to run on user-controlled hardware and bridge conversational natural language with real-world task execution, effectively acting as a proactive digital assistant rather than a reactive chatbot. It lets you send instructions through familiar messaging platforms like WhatsApp, Telegram, Discord, Slack, Signal, iMessage, and more, and then interprets those instructions to carry out actions such as managing calendars, sending emails or messages, browsing the web, executing system commands, and coordinating workflows across services — all while maintaining long-term memory and context across sessions. ...
    Downloads: 22 This Week
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  • 18
    Tailchat

    Tailchat

    Next generation noIM application in your own workspace

    Tailchat is an open-source instant messaging application designed as a modern workspace communication platform. It is built with React and TypeScript on the front end and uses a back-end microservice architecture for scalability. The project positions itself as more than a Slack, Discord, or Rocket.Chat alternative by emphasizing custom scenarios through plugins. Its front-end microkernel architecture makes it easier to extend the interface and build secondary development workflows. ...
    Downloads: 7 This Week
    Last Update:
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  • 19
    OpenMAIC

    OpenMAIC

    Open Multi-Agent Interactive Classroom

    ...OpenMAIC is built for flexible deployment, with support for direct use through its web experience as well as integration with OpenClaw so classrooms can be generated from messaging platforms such as Slack, Telegram, and Feishu.
    Downloads: 12 This Week
    Last Update:
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  • 20
    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: 7 This Week
    Last Update:
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  • 21
    shadcn-chat

    shadcn-chat

    CLI for adding customizable and re-usable chat components

    ...It provides a modern, stylish, and customizable chat interface designed for developers who want to integrate chat functionality into their applications quickly. The project follows best practices for UI development and supports real-time messaging features.
    Downloads: 0 This Week
    Last Update:
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  • 22
    Amazon Chime SDK for JavaScript

    Amazon Chime SDK for JavaScript

    A JavaScript client library for integrating multi-party communications

    The Amazon Chime SDK is a set of real-time communications components that developers can use to quickly add messaging, audio, video, and screen sharing capabilities to their web or mobile applications. Developers can build on AWS's global communications infrastructure to deliver engaging experiences in their applications. For example, they can add video to a health application so patients can consult remotely with doctors on health issues, or create customized audio prompts for integration with the public telephone network. ...
    Downloads: 9 This Week
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    See Project
  • 23
    NextChat

    NextChat

    Light and Fast AI Assistant

    NextChat is a browser extension that injects a floating ChatGPT-style chat sidebar into webpages, enabling instant AI assistance during web browsing. It supports context-aware chatting using page content, quick queries, and code assistance without opening a new tab. Developers appreciate its customization options—like hotkeys, themes, and engine selection—while everyday users enjoy handy tools for writing, summarizing, or brainstorming on the fly.
    Downloads: 28 This Week
    Last Update:
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  • 24
    Extension.js

    Extension.js

    The cross-browser extension framework

    Start building browser extensions that work across all major platforms, with support for TypeScript, WebAssembly, and next-generation JavaScript. No configuration is required.
    Downloads: 2 This Week
    Last Update:
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  • 25
    Legcord

    Legcord

    Legcord is a custom client designed to enhance your Discord experience

    A reverse-engineered Discord API library that allows users to interact with Discord in a non-traditional way, often used for automation or research purposes.
    Downloads: 4 This Week
    Last Update:
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