Open Source C++ MQTT Clients

Async.MQTT5 is a professional, industrial-grade C++17 client built on Boost.Asio. This Client is designed for publishing or receiving messages from an MQTT 5.0 compatible Broker. Async.MQTT5 represents a comprehensive implementation of the MQTT 5.0 protocol standard, offering full support for publishing or receiving messages with QoS 0, 1, and 2. The MQTT protocol is widely utilised for communication in various real-world scenarios, primarily serving as a reliable communication protocol for data transfer to and from IoT devices. While the MQTT protocol itself is relatively straightforward, integrating it into an application can be complex, especially due to the challenging implementation of message retransmission after a disconnect/reconnect sequence. The aim of Async.MQTT5 is to provide a very simple asynchronous C++ interface for application developers. The internal Client's implementation manages network and MQTT protocol details.

OWLOS Open source network operating system for managing IoT devices: - does't require internet access or additional servers - ready to connect sensors, actuators, LCD, DHT, Stepper and other devices - does't require programming skills - built-in user interface - use web browser to access and manage your OWLOS nodes - built-in RESTful server - built-in MQTT client - at the same time WiFi access point and station, in any combination: - can be used autonomously - can work on a local network can work via the Internet can integrate with other nodes running under OWLOS - organizing an internal network. without using a servers available in source code