GitHub

Firebase Realtime Database Arduino Library for ESP8266 and RP2040 Pico

The unified version for ESP8266 and ESP32 with Cloud Storage and new Cloud Messaging supported is now available. Since version 3.8.4, library allows you to use external Arduino Clients network ...
GitHub

ESP8266Audio - supports ESP8266 & ESP32

Arduino library to play MOD, WAV, FLAC, MIDI, RTTTL, MP3, and AAC files on I2S DACs or with a software emulated delta-sigma DAC on the ESP8266 and ESP32 - hub058/ESP8266Audio ...