The V2.1.X features are :

• Multiple firmwares support: Repetier, Marlin, Smoothieware and GRBL.
• Multiple languages support
• Full WiFi configuration of ESP3D settings including web update
• Control and monitor your connected board and firmware in every aspect (position, temperature, print, SD card content, custom commands, etc...)
• Macro support to add custom commands in WebUI by adding buttons launching some GCODE files from SD or ESP
• IP Camera support.