Arduino UNO WiFi Board Combines Atmel ATmega328P MCU with ESP8266 SoC - CNX Software
UNO R3 + WiFi ATmega328P+ESP8266 (32Mb memory) USB-TTL CH340G For Arduino Uno - External ESP8266 Pins - Arduino Stack Exchange
Wi-Fi R3 ATmega328P + ESP8266 (32Mb memory) USB-TTL CH340G For Arduino UNO NodeMCU - Mikroelectron MikroElectron is an online electronics store in Amman
UNO R3 + WIFI ESP8266 + CH340G Arduino and WIFI - a Versatile Development Board : 6 Steps - Instructables