OpenMQTTGateway VS Tasmota

What do you think about https://docs.openmqttgateway.com/ ?

Loaded with OpenMQTTGateway and relying on an ESP32, it brings exceptional range with its external antenna, ensuring your BLE devices stay connected through ethernet or WiFi.

If your device is on the list of devices supported by Theengs Decoder, you can fetch its readings with OpenMQTTGateway (on ESP32) or Theengs Gateway (on a Raspberry Pi or other computer).

https://docs.openmqttgateway.com/.

If you can find a 433Mhz version of this, you could use OpenMQTTGateway with a Lora board and use it to connect to multiple 433 style items. In fact, it may be able to handle this exact one with the 868Mhz Lora module directly. I'd check with the project forums first though.

And the package https://github.com/1technophile/OpenMQTTGateway should have everything setup as a straight forward package to get started

All of my office devices are connected to Sonoff S31 smart plugs, flashed with Tasmota on their own locked-down VLAN, and can be controlled via voice, Alexa, Tasker automation on my Android, NFC tags at my office door and various scripts triggered via my StreamDeck (on Linux). This all works fantastic, and I can turn on or off my devices, including my printer, when I start or end my day at work.

The best alternative firmware example for true IOT devices is Tasmota [1]. Erase manufacturer firmware for every ESP devices the day after purchase to avoid those careless manufacturer firmwares.

[1] https://tasmota.github.io/docs/

The ESP8266 based Sonoff S31 and ESP32 based Switchbot plugs, both flashed with either Tasmota or ESPHome, are my go-to options for US WiFi smart plugs with power monitoring.

And if you want to turn your ESP8266 into a standalone appliance, with a web interface and directly editable config that doesn't need a build step, Tasmota is another great option.

https://tasmota.github.io/docs/