Datapack Toolkit is an easy-to-use Minecraft worldgen datapack configuration tool.
This version is early in development, and currently only supports custom datapack configuration screens.
Also planned to support:
This tool is in no way associated with Minecraft or Mojang Studios. Creators of datapacks are not liable for their functionality after you modify them.
Datapack Toolkit (indev)
Config editor
Docs
A text widget...