emqx / emqx
The most scalable and reliable MQTT broker for AI, IoT, IIoT and connected vehicles
emqx / emqx
HuLaSpark / HuLa
🍀 A cross-platform instant messaging desktop application with exceptional performance built on Rust + Vue3, compatible with Windows, macOS, Linux, Android, and iOS（一款基于Rust+Vue3极致性能的跨平台即时通讯桌面应用，兼容Windows、MacOS、Linux、Android、IOS）
processone / ejabberd
Robust, Ubiquitous and Massively Scalable Messaging Platform (XMPP, MQTT, SIP Server)
logos-messaging / logos-delivery
Logos Messaging protocols implemented in Nim
appwrite / appwrite
The open-source cloud for agents & devs. Including Auth, Databases, Storage, Functions, Messaging, Hosting, Realtime, WAF and more
permissionlesstech / bitchat
bluetooth mesh chat, IRC vibes
telegramdesktop / tdesktop
Telegram Desktop messaging app
nanocoai / nanoclaw
A lightweight alternative to OpenClaw that runs in containers for security. Connects to WhatsApp, Telegram, Slack, Discord, Gmail and other messaging apps,, has memory, scheduled jobs, and runs directly on Anthropic's Agents SDK
alibaba / spring-cloud-alibaba
Spring Cloud Alibaba provides a one-stop solution for application development for the distributed solutions of Alibaba middleware.
apache / rocketmq
Apache RocketMQ is a cloud native messaging and streaming platform, making it simple to build event-driven applications.
nats-io / nats-server
High-Performance server for NATS.io, the cloud and edge native messaging system.
simplex-chat / simplex-chat
SimpleX - the first messaging network operating without user identifiers of any kind - 100% private by design! iOS, Android and desktop apps 📱!
openimsdk / open-im-server
IM Chat OpenClaw
chenhg5 / cc-connect
Bridge local AI coding agents (Claude Code, Cursor, Gemini CLI, Codex) to messaging platforms (Feishu/Lark, DingTalk, Slack, Telegram, Discord, LINE, WeChat Work). Chat with your AI dev assistant from anywhere — no public IP required for most platforms.
apache / pulsar
Apache Pulsar - distributed pub-sub messaging system
microg / GmsCore
Free implementation of Play Services
rabbitmq / rabbitmq-server
Open source RabbitMQ: core server and tier 1 (built-in) plugins
tinode / chat
Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots
eclipse-mosquitto / mosquitto
Eclipse Mosquitto - An open source MQTT broker
zeromq / libzmq
ZeroMQ core engine in C++, implements ZMTP/3.1
centrifugal / centrifugo
Scalable real-time messaging server in a language-agnostic way. Self-hosted alternative to Pubnub, Pusher, Ably, socket.io, Phoenix.PubSub, SignalR. Set up once and forever.
fluxerapp / fluxer
A free and open source instant messaging and VoIP chat app built for friends, groups, and communities.
ValveSoftware / GameNetworkingSockets
Reliable & unreliable messages over UDP. Robust message fragmentation & reassembly. P2P networking / NAT traversal. Encryption.
berty / berty
Berty is a secure peer-to-peer messaging app that works with or without internet access, cellular data or trust in the network
aeron-io / aeron
Efficient reliable UDP unicast, UDP multicast, and IPC message transport
MassTransit / MassTransit
Distributed Application Framework for .NET
firebase / firebase-ios-sdk
Firebase SDK for Apple App Development
nats-io / nats.go
Golang client for NATS, the cloud native messaging system.
MessageKit / MessageKit
A community-driven replacement for JSQMessagesViewController
strimzi / strimzi-kafka-operator
Apache Kafka® running on Kubernetes
kurrent-io / KurrentDB
KurrentDB is a database that's engineered for modern software applications and event-driven architectures. Its event-native design simplifies data modeling and preserves data integrity while the integrated streaming engine solves distributed messaging challenges and ensures data consistency.
firebase / firebase-js-sdk
Firebase Javascript SDK
apache / iggy
Apache Iggy: Hyper-Efficient Message Streaming at Laser Speed
AsamK / signal-cli
signal-cli provides an unofficial commandline, JSON-RPC and dbus interface for the Signal messenger.
macro-inc / macro
Macro is a unified workspace for teams: email, chat, docs, tasks, agents, calls, and CRM — @-linked together with shared AI memory.
nanomsg / nng
nanomsg-next-generation -- light-weight brokerless messaging
php-amqplib / php-amqplib
The most widely used PHP client for RabbitMQ
faye / faye
Simple pub/sub messaging for the web
jitsi / jitsi
Jitsi is an audio/video and chat communicator that supports protocols such as SIP, XMPP/Jabber, IRC and many other useful features.
mdn / dom-examples
Code examples that accompany various MDN DOM and Web API documentation pages
nikoksr / notify
A dead simple Go library for sending notifications to various messaging services.
OpenHFT / Chronicle-Queue
Micro second messaging that stores everything to disk
vernemq / vernemq
A distributed MQTT message broker based on Erlang/OTP. Built for high quality & Industrial use cases. The VerneMQ mission is active & the project maintained. Thank you for your support!
juggleim / im-server
IM Chat, High-performance, scalable, self-hosted instant messaging server in Go — private chat, groups, chatrooms, WebSocket and REST APIs.
eclipse-zenoh / zenoh
zenoh unifies data in motion, data in-use, data at rest and computations. It carefully blends traditional pub/sub with geo-distributed storages, queries and computations, while retaining a level of time and space efficiency that is well beyond any of the mainstream stacks.
bloomberg / blazingmq
A modern high-performance open source message queuing system
nicotine-plus / nicotine-plus
Graphical client for the Soulseek peer-to-peer network
zeromq / netmq
A 100% native C# implementation of ZeroMQ for .NET
celery / kombu
Messaging library for Python.
EasyNetQ / EasyNetQ
An easy to use .NET API for RabbitMQ
dittofeed / dittofeed
Open-source customer engagement. Automate transactional and marketing messages across email, SMS, mobile push, WhatsApp, Slack, and more 📨
aaron-he-zhu / aaron-marketing-skills
120 marketing skills as an AI marketing staff — plugin, portable skills, or an 8-bot team across 7 disciplines (narrative, SEO/GEO, social, email, paid, influencer, launch) on one contract, with 8 auditor gates: TALE · CORE-EEAT · CITE · ECHO · SEND · ROAS · STAR · RAMP.
onetimesecret / onetimesecret
Keep passwords and other sensitive information out of your chat logs and inboxes.
softwaremill / elasticmq
In-memory message queue with an Amazon SQS-compatible interface. Runs stand-alone or embedded.
destan19 / OpenAppFilter
OAF(OpenAppFilter) is a parental control software based on OpenWrt. It supports popular applications across gaming, video streaming, instant messaging, such as TikTok, YouTube, Facebook. Currently, it supports hundreds of different applications.
liftbridge-io / liftbridge
Kafka-style message streaming in Go. Built on NATS. Single binary, no JVM, no ZooKeeper.
TencentCloud / TIMSDK
Free Chat SDK (IM SDK) — 1,000 MAU/month free forever with push notifications & no concurrency limits. Build in-app messaging with chat API, UIKit & send message. Supports Android, iOS, Flutter, Web, React Native, uni-app, HarmonyOS & more.
rebus-org / Rebus
:bus: Simple and lean service bus implementation for .NET
absmach / magistrala
IoT Platform Framework
nanomq / nanomq
An ultra-lightweight and blazing-fast Messaging Bus/MQTT Broker for Edge & SDV