Kivy

• Rapid templating
• Ease of development
• One codebase for all major platforms
• Capable of deployment to mobile devices
• GPU Accelerated
• Multi touch capable
• Active Community
• Commercial friendly open source license
• Well documented

• Observer pattern
• KV Lang file
• Python Lang file
• Magic!?

from kivy.app import App
from kivy.uix.gridlayout import GridLayout
from kivy.lang import Builder

Builder.load_file('simple_demo.kv')

class TestWidget(GridLayout):
    pass

class TestApp(App):
    def build(self):
        return TestWidget()

if __name__ == '__main__':
    TestApp().run()

#:kivy 1.7.0

<TestWidget>
    rows: 3
    columns: 2
    CodeInput:
    TextInput:
        multiline: False
        hint_text: 'I am some hint text'
    Accordion:
        AccordionItem:
            title: 'I am an accordion'
            Label:
                text:'I am a label inside an accordion'
        AccordionItem:
            title: 'I am too!'
            Button:
                text: 'I am a random button!'
    Label:
        text: 'I am a label'
    Button:
        text: 'I am a button!'
        on_press: self.text = 'I am being pressed!'
        on_release: self.text = 'I was just pressed!'

#:kivy 1.7.0
<TestWidget>
    rows: 3
    columns: 2

class TestWidget(GridLayout):
    pass