Best Mqtt Server 2026

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Last Updated - 22.07.2026

Best Choice

01

Bellushortus.eu

Home Assistant Box 4G Plus - Smart Hub with 32GB, USB 3.0, Zigbee2MQTT/ZHA, Cortex-A53 (Black 2)

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9.9

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With USB 3.0 and USB 2.0 ports, HDMI, Ethernet, and an SD card slot, it's ready for connecting ZigBee adapters, cameras, hard drives and other accessories.
The device supports the ZigBee and MQTT (ZigBee2MQTT / ZHA) protocols, allowing the integration of thousands of devices from different brands - even those you already own at home.
The Home Assistant Box is a compact control centre for the smart home, equipped with a quad-core Cortex-A53 processor, 4GB RAM and 32GB memory, designed for smooth use of Home Assistant.
It is the ideal solution for anyone who wants full control of their smart home – without cloud dependency and with maximum privacy.
Facilitates the transition of ecosystems such as Apple HomeKit, Google Home, Alexa or Samsung SmartThings and allows gradual migration and centralization of all smart devices into a single system.

138,99 €
02

PUSR

USR-W610 Wireless Converter Serial to WiFi Ethernet Converter RS485/RS232 WiFi Serial Server Support Modbus Gateway Realize Serial Data and TCP/IP Data Package Transparent Transmission

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Smart Features for Demanding Applications: Includes heartbeat packet, registration packet, and WebSocket function for enhanced connection management, device identification, and real-time web interaction, ideal for SCADA, smart agriculture, and medical data transmission.
Multi-Protocol Support & Transparent Transmission: Enables reliable data communication via TCP, UDP, HTTP, and MQTT protocols. Features a built-in Modbus TCP/RTU gateway for effortless industrial protocol conversion and polling.
Industrial-Grade Reliability: Designed for harsh environments with -40℃ to 85℃ wide operating temperature, 1.5KV Ethernet isolation, and EFT/ESD protection. Hardware and software watchdogs ensure 24/7 stable operation without downtime.
Easy Setup & Flexible Power: Simple configuration via web interface. Supports a wide 5-36V DC power input with both terminal block and DC jack, and offers wall-mounting for convenient installation in various locations.
Dual Connectivity & Versatile Networking: Seamlessly bridge your RS232 or RS485 serial devices to Wi-Fi or Ethernet networks. Supports AP, STA, AP+STA, Bridge, and Router modes for ultimate deployment flexibility in any application.

65,88 €
03

ZBIianxer

ZBIianxer MQTT Netzwerkserver mit einem Port, RS485-Ethernet, industrielles Aluminiumgehäuse, Netzwerkkommunikationsgerät, MQTT Server

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9.5

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

kompakte Aluminiumgerät einfach zu installieren und gewährleistet die Datenübertragung über verschiedene Netzwerkarchitekturen hinweg
Perfekt für die Fabrikautomation, Gebäudemanagement und die Fernüberwachung von Geräten, wo eine robuste RS485-zu Ethernet Konvertierung mit MQTT Cloud Konnektivität unerlässlich
Ideal für Entwickler, Automatisierungsingenieure und Integratoren, die eine stabile Kommunikation in Industriequalität zwischen Geräten und modernen Ethernet Netzwerken benötigen
Erzielen Sie Netzwerkflexibilität durch Plug and Play Bereitstellung und bewahren Sie die Datenintegrität durch die industrielle Aluminiumkonstruktion
Dieser Single Port Server ermöglicht eine nahtlose RS485-zu Ethernet Konvertierung mit MQTT Unterstützung und verfügt über ein Aluminiumgehäuse für industrielle Umgebungen

30,29 €
Value for Money

04

Waveshare

Waveshare RS485 to RJ45 Ethernet Industrial Serial Server Modbus Gateway TCP/IP to Serial Rail-Mount Support with PoE Ethernet Port and Electrical Isolation Adapter

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9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

This is the hardware upgrade version, support PoE Ethernet port power supply, with power and signal isolation protection, which is safer for industrial applications.
This is a RS485 device data acquisitor / IoT gateway designed for industrial environments. It combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, RS485 to JSON, etc.
The module features RS485 and Ethernet port (POE function is optional), uses screw terminals for power input. Rail-mount flame-retardant case design, small in size, easy to install.
It is suitable for applications such as data acquisition, IoT gateway, safety & security IoT, and intelligent instrument monitoring.
Bi-Directional Transparent Data Transmission Between RS485 and Ethernet

38,99 €
05

Waveshare

Waveshare RS485 to WiFi/Ethernet Module Rail-Mount Serial Server Modbus MQTT Gateway Supports Transparent Transmission Mode

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9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Using screw terminals for power input, it supports 5~36V wide range power supply. Rail-mount V0 flame-retardant case design, small in size, easy to install. It is suitable for applications like data acquisition, IoT gateway, safety & security IoT, and intelligent instrument monitoring.
This is a RS485 device data acquisitor / IoT gateway designed for industrial environment. It combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, RS485 to HTTPD Client, etc. With RS485, WIFI and Ethernet ports, the module can realize functions such as serial to WIFI, serial to Ethernet, Ethernet to WIFI and so on.
The user sends data to the server according to the protocol Send data to different servers without restarting. After the user has set the HTTP header through AT commands or web page, the module can send data to the HTTP server, or obtain data from the HTTP server.
Support Transparent Transmission Mode, Supports TCP Server / TCP Client / UDP Server / UDP Client.Support Modbus TCP And Modbus RTU Interconversion Mode.
Devices can subscribe to other MQTT client messages, and can publish topic information to the server. Supports subscription of 6 messages and publication of 6 topics, wider range of use and more applicable scenarios. Users can view device-related information through terminal devices or cloud platforms.

49,99 €
06

Waveshare

Waveshare Industrial Grade Serial Server RS232/485 to WiFi and Ethernet, Modbus Gateway, MQTT Gateway, Metal Case, Wail-Mount and Rail-Mount Support

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9.2

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

This is an RS232/485 device data acquisitor / IoT gateway designed for industrial environment.
Onboard multiple power supply interfaces, supports 6~36V wide range power supply, and PoE function optional.
It is suitable for applications like data acquisition, IoT gateway, safety & security IoT, and intelligent instrument monitoring. Comes with a WiFi antenna by default, you can choose the outdoor WiFi antenna according to your needs. The power supply is not included, it is recommended to use with a 12V Power Adapter.
It combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, serial port to HTTPD Client, etc. With RS232, RS485, WIFI and Ethernet interfaces, the module can realize functions such as serial port to WIFI, serial port to Ethernet, Ethernet to WIFI and so on.
Industrial grade metal case design, supports wall-mount and rail-mount installations, small in size, easy to install.

44,99 €
07

Waveshare

Industrial RS485 to Ethernet Serial Server Modbus Gateway MQTT Gateway TCP/IP to Serial Module, Supports PoE Ethernet Port Power Supply, with Power and Signal Isolation Protection, Rail Mount

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9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

User-defined heartbeat/registration packet, easy for cloud communication and device identification, NTP protocol support, getting network time info for serial output or data upload
RS485 to RJ45 Ethernet converter support bi-directional transparent data transmission between RS485 and Ethernet, with POE function and electrical isolation, uses screw terminals for power input, rail-mount case design
Multi configuration methods, supports Web browser configuration, obtaining dynamic IP via DHCP, DNS protocol connected domain server address
Modbus gateway support, suitable for Modbus gridding upgrade, can be used with 3D configuration software. Multi communication modes, supports TCP server / TCP client / UDP mode / UDP multicast
MQTT/JSON to Modbus, more flexible conversion between different protocols. Multi hosts roll-polling support, different network devices will be identified and responsed respectively, no more crosstalk issue while communicating with multi network devices

38,50 €
08

Waveshare

Waveshare Industrial Serial Server RS485 to RJ45 Ethernet TCP/IP to Serial Module Support Rail-Mount Modbus Gateway

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9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

This is a RS485 device data acquisitor / IoT gateway designed for industrial environment
The module features RS485 and Ethernet ports, uses screw terminals for power input, supports 9~24V wide range power supply (Note: Power supply is not included, it is recommended to use a 12V Industrial DIN-Rail Power Supply)
Rail-mount flame-retardant case design, small in size, easy to install. It is suitable for applications like data acquisition, IoT gateway, safety & security IoT, and intelligent instrument monitoring
It combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, RS485 to JSON, etc
Bi-Directional Transparent Data Transmission Between RS485 And Ethernet

31,99 €
09

Waveshare

Waveshare RS232/485 to WiFi and Ethernet Converter, Industrial Grade Serial Server, Modbus Gateway, MQTT Gateway

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

This is an RS232/485 device data acquisitor / IoT gateway designed for industrial environment. It combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, serial port to HTTPD Client, etc.
RS232/485 To WiFi And Ethernet,Industrial Grade Serial Server, Modbus Gateway, MQTT Gateway
RS232/485 TO WIFI ETH Serial Server supports wall-mount and rail-mount installations,industrial grade metal case,small in size, easy to install.
It is suitable for applications like data acquisition, IoT gateway, safety & security IoT, and intelligent instrument monitoring..
Industrial Grade Serial Server RS232/485 To WiFi And Ethernet Converter with RS232, RS485, WIFI and Ethernet interfaces, the module can realize functions such as serial port to WIFI, serial port to Ethernet, Ethernet to WIFI and so on.

44,19 €
10

Shelly

Shelly BLU Gateway Bluetooth WiFi Gateway USB-A Dongle Home Automation Compatible with Alexa & Google Home iOS Android App Wireless WiFi Repeater No Hub Required

24% Off

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8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Plug-and-play connection: Compact USB Type-A dongle design for effortless setup - simply connect to a USB power source and connect your Bluetooth devices
Large range: WiFi range up to 30 m indoors and 50 m outdoors, Bluetooth range up to 20 m indoors and 30 m outdoors, depending on local conditions
Easy to install: supports MQTT and scripting – ideal for integration into automation systems such as Home Assistant
Easy and easy to use: low self-consumption (<1 W) and small format (45 × 20 × 8 mm) – discreet addition to any smart home
Bluetooth wireless connection: effortlessly integrates Shelly BLU devices into your existing Shelly smart home ecosystem - for control and monitoring via WiFi, without additional hubs

13,56 € 17,73 €(24% Off off)