Do not use it for production, in alpha stage for 3D printer/Sand-Table and pre-alpha for CNC (no dedicated UI yet) - breaking changes can happen anytime - just be aware of that, but feel free to test it and feedback
To compile ESP3D you need to edit the configuration.h according your needs, you can also generate it, using the configurator which simplify a lot this step: https://luc-github.github.io/
ESP3D V3 use ESP3D-WebUI 3.0, but it is built according your system and your system firmware: https://github.com/luc-github/ESP3D-WEBUI/3.0/dist/, so you need to use the right one, the configurator may also help you to download the correct version for your needs.
please use Arduino ide 1.8.9+ with 
or PlatformIO
Because ESP3D 3.0 is actually a set of several projects: ESP3D, ESP3D-Configurator, ESP3D-WEBUI, ESP3DLib, ESP32SSDP, svg-icons
I did a project board to put all majors tasks/issues in one places : ESP3D Project
- Finish web UI Major features (3D printing and GRBL)
- Do user documentation: Readme / features list description / wiki/ Features videos etc...
- Test current features heavily
- Collect some feedback
- Test heavily (still)
- Implement minor missing features not present in alpha
- Translate UI and build language packs
- Adjust features according feedback
- Refactoring code when necessary
- TBD
Please use discord :
- FTP server come from Jean-Michel Gallego https://github.com/gallegojm/Arduino-Ftp-Server
- WebDav server come from David Gauchard https://github.com/d-a-v/ESPWebDAV
- Mks support come from https://github.com/makerbase-mks/MKS-WIFI
- Line support come from https://github.com/TridentTD/TridentTD_LineNotify and https://notify-bot.line.me/doc/en/ and https://pushover.net/api
- Pushover support come from https://github.com/ArduinoHannover/Pushover
- Email support come from https://github.com/CosmicBoris/ESP8266SMTP and https://www.electronicshub.org/send-an-email-using-esp8266/
- Telegram support come from https://medium.com/@xabaras/sending-a-message-to-a-telegram-channel-the-easy-way-eb0a0b32968
- Websockets come from Markus Sattler https://github.com/Links2004/arduinoWebSockets
- BMx280MI come from Gregor Christandl https://bitbucket.org/christandlg/bmx280mi
- DHT sensor come from beegee_tokyo http://desire.giesecke.tk/index.php/2018/01/30/esp32-dht11/
- ESP32SSDP come from luc-github https://github.com/luc-github/ESP32SSDP
- ESP8266-Arduino-Lua come from François Dugast but esp8266/esp32 compatible version is here https://github.com/luc-github/ESP8266-Arduino-Lua as PR is not merged
- ESP8266 and ESP32 Oled Driver for SSD1306 display come from Daniel Eichhorn, Fabrice Weinberg https://github.com/ThingPulse/esp8266-oled-ssd1306
- LittleFS_esp32 come from lorol https://github.com/lorol/LITTLEFS
- lv_arduino come from Pavel Brychta pablo@xpablo.cz https://littlevgl.com
- SdFat come from Bill Greiman https://github.com/greiman/SdFat
- TFT_eSPI come from Bodmer https://github.com/Bodmer/TFT_eSPI
- ESP8266 core come from https://github.com/esp8266/Arduino
- ESP32 core come from https://github.com/espressif/arduino-esp32