There are 8 repositories under mqtt-bridge topic.
Modbus TCP, Modbus UDP and Modbus RTU client/server library for .NET implementations
A HDMI-CEC to MQTT bridge for connecting HDMI-CEC-devices to your Home Automation system.
Xiaomi Zigbee to MQTT bridge using zigbee-shepherd
Publish info from RTL433 receiver to MQTT broker
MQTT bridge for EWPE Smart powered devices
Customize MQTT messages between two brokers
MQTT bridge, web service API, time sync, and logging for HAI/Leviton OmniPro II controllers
MQTT Proxy allows MQTT clients to send messages to other messaging systems
MQTT Bridge To SmartThings [MBS]
MQTT Bridge
Connect Siemens S7 to Mqtt with Homeassistant discovery support
Simply a HTTP to MQTT bridge.
MQTT bridge for the EnergySmart Water Heater WiFi Controller
Consmart/Triones/Flyidea BLE smart light to MQTT bridge
BLE to MQTT gateway for Xiaomi MI Temperature and Humidity Sensor with BLE and LCD
IoT Gateway
Senti Console exhibit dashboards and data from the Senti IoT Micro Services platform
TC66C – MQTT Bridge
Simple MQTT bridge to the venstar HTTP API
A Node-Red module for Bluetooth LE IoT devices
A MQTT Gateway connecting Modbus RTU and Google IoT Core
Slimmed down version of Butler, only including the REST-to-MQTT bridge
Control Android devices with MQTT using ADB, isolated into docker.