You can manage everything supported MQTT protocol.

Any devices (ESP8266, Arduino, Raspberi Pi) and any other supported. C, C++, NodeJS, python and other - any client with MQTT support. Ideally for DIY.

Telegram Chat https://t.me/joinchat/HQ-cJxWQ7qiIFlUbpvCXKg

ESP8266 & ESP32 Firmware https://github.com/DmitryBorisenko33/esp32-esp8266_iot-manager_modules_firmware/releases

https://github.com/DmitryBorisenko33/esp32-esp8266_iot-manager_modules_firmware/wiki/Flash-instruction

Heroku demo source: https://github.com/4refr0nt/iotmanager-heroku and demo site: https://iotmanager-demo.herokuapp.com

Docs: see Widgets Collection

Widgets: toggle, range, badge, power-button, fillgauge, display-value, simple-btn, anydata, steel

Easy way to send PUSH notifications from any devices to your smartphone or tablet.

Connection wizard help you for Quick Start.
Detailed event log for easy IoT devices debugging.
Use Statistics for optimize data exchange.
End-user mode for non-DIY users.

This app from esp8266.ru admin (ESPlorer and luatool developer)

Quick Start Guide (English) http://esp8266.ru/iotmanager/
Support (English) http://www.esp8266.com/viewtopic.php?f=12&t=5953