arendst / Tasmota

Alternative open-source firmware for ESP8266 and ESP32 devices, configurable via web UI and controllable locally over MQTT, HTTP, Serial or KNX.

teslamate-org / teslamate

Self-hosted logger that records Tesla vehicle data into Postgres, with Grafana dashboards and MQTT publishing.

esphome / esphome

Generates firmware for ESP32, ESP8266, RP2040 and similar microcontrollers from YAML configuration files, integrating with Home Assistant.