A cloud native implementation for Apache Kafka, reducing your cloud infrastructure bill by up to 90%.

Iggy is the persistent message streaming platform written in Rust, supporting QUIC, TCP and HTTP transport protocols, capable of processing millions of messages per second.

Apache Pulsar NodeJS Client

Apache RocketMQ is a cloud native messaging and streaming platform, making it simple to build event-driven applications.

The most scalable open-source MQTT broker for IoT, IIoT, and connected vehicles

Apache Pulsar C++ client library

Apache Pulsar - distributed pub-sub messaging system

A cloud native implementation for Apache RocketMQ 5.0

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

iOS app with keyboards for language learners

Typing GUI for language learners on Windows, Mac and Linux

Android app with keyboards for language learners

Java client for NATS

Integration between Micronaut and Apache Kafka

The Extensible Connection-oriented Messaging (XCM) library.

Delta Chat Rust Core library, used by Android/iOS/desktop apps, bindings and bots 📧

In-memory Spring cloud AWS messaging

Apache Kafka® running on Kubernetes

Revolutionize your chats with our quantum-secure app, ensuring the highest levels of privacy and security.

SimpleX - the first messaging platform operating without user identifiers of any kind - 100% private by design! iOS, Android and desktop apps 📱!

Open source RabbitMQ: core server and tier 1 (built-in) plugins

Provides end-to-end and data-at-rest encryption using NATS

MyTelegram is Telegram server side api implementation written in c#

Dockerized Kafka consumer

Silverback is a simple but feature-rich message bus for .NET core (it currently supports Kafka, RabbitMQ and MQTT).

Ministream is a small, stand-alone, real-time event messaging streaming server

Graphical client for the Soulseek peer-to-peer network

即时通讯(IM)系统

A modernish IM client inspired by Skype 0.97