uMQTT Toolkit by Cypherbridge Systems is a full function MQTT 3.1 embedded client with a low footprint, designed for scalable Internet of Things and Big Data systems. It is bundled with uSSL TLS to provide an integrated solution for secure publishing and subscribing of message data to the cloud. The toolkit supports data replication, synchronization, sensor data reporting, remote device operation, and general-purpose device control and status. It enables the addition of an MQTT 3.1 client to subscribe and publish message data to the cloud, making it suitable for embedded systems with limited resources.