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

qTox is a chat, voice, video, and file transfer IM client using the encrypted peer-to-peer Tox protocol.

Anonymous peer-to-peer instant messaging

A modern high-performance open source message queuing system

Privacy focused messenger that doesn't trust anyone with your identity, your contact list, or your communications

File sharing program using DC and ADC protocols

An effort to bring Google's Firebase C++ API to Qt + QML

Mirror of Apache Qpid Proton

Robust applications framework in C++. Includes a static analysis tool and two applications.

Apache Pulsar NodeJS Client

Conceal Core (CLI)

Mirror of Apache Qpid C++

C++ messaging and serialization library

Conceal Desktop (GUI)

A robust subsystem designed for registering and facilitating communication between unconnected gameplay objects. This system allows you to send and receive messages containing specific data through defined channels, utilizing gameplay tags.

Apache Pulsar C++ client library

LoRaMessenger is an off-grid chat between LoRa equipped ESP32 nodes with a simple wireless web interface.

Like a serial killer, but friendlier. A C++ serial publish/subscribe based communication protocol.

Small and fast cross-platform networking library, with support for messaging, IPv6, HTTP, SSL and WebSocket.

S.I.M.P.L.E. - Smart Intuitive Messaging Platform with Less Effort. A Cross-Platform C++ Library to Exchange Data Across Network.