ESP8266 Wifi with the Arduino Micro

Built-in Micro-USB, with flash and reset switches, easy to program Arduino compatible, works great with the latest Arduino IDE/Mongoose

HiLetgo 3pcs ESP8266 NodeMCU CP2102 ESP-12E Development Board Open Source Serial Module Works Great for Arduino IDE/Micropython (Large)

DM Strong ESP8266 ESP-12E Module CH340 CH340G Wireless Wifi

ARDUINO ESP8266 CH-340 V2 NODEMCU/ ESP8266 V2 CP2102 YS-55/V3

Micro SD TF Card Shield For Wemos D1 Mini WiFi ESP8266 Arduino

UNO+WiFi R3 ATmega328P+ESP8266, 8Mb flash, USB-TTL CH340G, Micro

Arduino Esp8266 Nodemcu Development Board Wifi - Esp8266 Esp-12f

Nodemcu Esp8266 Development Board With Oled Display, Ch340 Driver

UNO R3 + WIFI ESP8266 + CH340G Arduino and WIFI - a Versatile

April Brother

Nodemcu WiFi ESP8266 Development Board 0.96 inch OLED Micro type-C

Connecting Arduino WiFi to the Cloud Using ESP8266 : 7 Steps

Using ESP 8266 with Pro Micro - Project Guidance - Arduino Forum

WiFi Serial Transceiver Module - Wiki

Arduino Esp8266 Wifi Module Interfacing With Arduino Uno