NodeMCU ESP8266 Development Board with 0.96 Inch OLED Display, CH340 Driver, ESP-12E WiFi Wireless Module, and Micro USB Works Great for Arduino IDE/Micropython Programming (Pin Header Soldered) : Electronics
WiFi / Internet Controlled Relays Using ESP8266 - Quick, 30 Minutes IoT Project : 3 Steps (with Pictures) - Instructables
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)
Battery-Powered ESP8266 Sensor? Never Been Simpler
Arduino to ESP8266, 5 reasons to switch
ESP8266 Deep Sleep with Arduino IDE (NodeMCU)
Blynk - build an app for your Arduino project in 5 minutes by Pasha Baiborodin — Kickstarter
Ask Hackaday: Is The ESP8266 5V Tolerant?
Part 1 — How to build your own ESP8266/ESP32 Over-The-Air firmware updater, by Derk Zomer
Esp8266 + Relay, yet another post.. - General Electronics - Arduino Forum
esptool.FatalError: Failed to connect to ESP8266: Timed out - Programming Questions - Arduino Forum