WARNING::This is Alpha grade software, don't blame us if it eats your kittens
Kivy Designer is Kivy's tool for designing Graphical User Interfaces (GUIs) from Kivy Widgets. You can compose and customize widgets, and test them. It is completely written in Python using Kivy.
Prerequisite for Kivy Designer is watchdog. To install watchdog refer to: http://pythonhosted.org/watchdog/
Make sure you have kivy 1.8(currently devel branch) installed.
cd kivy/tools
python ./garden install filebrowser
git clone http://github.com/kivy/kivy-designer/
cd kivy-designer
python main.py