Top 357 messaging open source projects

SwiftUI Chat UI (Client) Framework & Documentation to get started!

⚡️ Next-generation Node.js bindings to the ZeroMQ library

Secure chat software for your computer.

Modular p2p messaging stack, with a focus on secure messaging.

Input Accessory View for Commenting and Chat User Interfaces built in Swift, if you like it please "☆"

An Open-Source, Cloud-Native, Distributed MQTT Message Broker for IoT.

Apache Pulsar - distributed pub-sub messaging system

Django-directmessages is a low-level and easy-to-use Django App to manage simple directmessages.

MongooseIM client for iOS

The simplest way to de-Google your life and business: Inbox, Calendar, Files, Contacts & much more

DEPRECATED

ZeroMQ core engine in C++, implements ZMTP/3.1

Android client for Project Tox - Secure Peer to Peer Messaging

Ruby client for NATS, the cloud native messaging system.

Vonage REST API client for PHP. API support for SMS, Voice, Text-to-Speech, Numbers, Verify (2FA) and more.

RabbitMQ-backed microservices supporting RPC, pubsub, automatic service discovery and scaling with no code changes.

Instant messaging server for the Extensible Messaging and Presence Protocol (XMPP).

Messaging platform in C# for TCP and Websockets, with or without SSL

Chat Message La - A Blockchain implementation for ultra-secure (just kidding!) messaging in Java

SPA on Spring Boot 1.x, WebSockets and React, gradle, nodejs, spring-boot, gradle multi project, spring-mvc, spring-data, gradle dependency update plugin, react-router

Chat SDK iOS - Open Source Mobile Messenger

A reactive Single-Page Instagram-Clone with some new features!! 💪📸👓

A dead simple Go library for sending notifications to various messaging services.

Connect your App to Multiple Messaging Channels with the W3C Open standard.

The officially supported adapter for using Firebase with Ember

Mirror of Apache ActiveMQ Artemis

An UITextView in Swift. Support auto growing, placeholder and length limit.

Fast and reliable message broker built on top of Kafka.

Framework for building Event-Driven Microservices

A distributed, tag-based pub-sub service for modern web applications and container-driven cloud.

Efficient reliable UDP unicast, UDP multicast, and IPC message transport

Countly Product Analytics Android SDK

Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots

Iris is a highly configurable and flexible service for paging and messaging.

HiveMQ CE is a Java-based open source MQTT broker that fully supports MQTT 3.x and MQTT 5. It is the foundation of the HiveMQ Enterprise Connectivity and Messaging Platform

Scalable real-time messaging server in a language-agnostic way. Set up once and forever.

Robust, Ubiquitous and Massively Scalable Messaging Platform (XMPP, MQTT, SIP Server)

A community-driven replacement for JSQMessagesViewController

AMQP client library in Rust, with a clean, futures based API

Messaging patterns for Backbone applications.

iOS - Real-time messaging app 🎨

Threema App for Android.

A realtime distributed messaging platform (forked from https://github.com/nsqio/nsq)

☁️ Azure Service Bus service issue tracking and samples

Berty is a secure peer-to-peer messaging app that works with or without internet access, cellular data or trust in the network

Kafka implemented in Golang with built-in coordination (No ZK dep, single binary install, Cloud Native)

Real-time messaging library for Go with scalability in mind

Open source, native iOS Messenger, with realtime chat conversations (full offline support).

PHP Lightweight Message Bus supporting CQRS.

The DIME resolver library and command line utilities.

Simple service bus for sending events between processes using amqp.

Franz is a free messaging app for services like WhatsApp, Slack, Messenger and many more.

Messenger Clone - Real-time iOS Chat with Firebase Firestore written in Swift

End-to-end encrypted messaging and mutual authentication between cloud and edge-device applications

No longer maintained

The most widely used PHP client for RabbitMQ

The official C# Client for NATS

A realtime distributed messaging platform

QuickBlox iOS SDK for messaging and video calling

Kahla is a cross-platform business messaging app.