
Description: Mosquitto is an open source message broker that implements the MQTT protocol. It is lightweight and designed for low resource usage, making it ideal for Internet of Things devices and messaging applications.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: emqtt is an open-source, scalable, distributed MQTT message broker that supports a wide range of network transport protocols. It is written in Erlang/OTP and provides features such as persistent sessions, queueing, clustering, bridges and enterprise-grade security.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API