ESP8266 Programmer with USB-Serial Adapter - V3.0 from BurgessWorld Custom Electronics on Tindie
USB to ESP-01 Adapter Board Modification : 3 Steps (with Pictures) - Instructables
CH340 USB to ESP8266 UART Programmer Adapter for ESP 01 WiFi Modules - YouTube
DEBO ESP8266 USB: Development boards - ESP8266 USB programmer at reichelt elektronik
Buy AZDelivery ESP8266 ESP-01S Serial Wireless WLAN WiFi Transceiver Module 1MB Flash 80MHz with CH340G USB Converter Adapter compatible with Arduino and Raspberry Pi Including E-Book! Online at desertcartBahamas
uart - ESP8266 Programming using ESP-01 to USB converter - Arduino Stack Exchange
What is the easiest way to program esp8266 without an FTDI module? : r/ esp8266
Flash Program ESP-01 using USB Serial Adapter — Do it your self Hobby