kivy

Being a cross-platform Python library, Kivy is aimed at developers trying to create applications that sport cutting-edge user interfaces, as in the case of multi-touch software.

Boasting support for popular inputs, protocols, and devices like WM_Pen, WM_Touch, Mtdev, TUIO, Linux Kernel HID, and more, Kivy also integrates a multi-touch mouse simulator. Aside from that, you might be interested to know that its graphics engine is based on OpenGL ES 2.

It is worth pointing out that Kivy’s essence lies in the fact that it promises to make your code both deployable and reusable while also allowing you to enjoy quick prototyping and rely on a design that is quite easy to navigate.

Costly operations should no longer be an issue if you turn to Kivy, and the fact that you are not expected to figure out intricate compiler settings when developing applications is also a given, which translate to fewer lines of code, and implicitly, less effort on your side.

Aside from that, it should be said that Kivy puts emphasis on seamless performance since it uses the GPU whenever need be. Last but not least, you may want to know that the library includes 20 widgets, all of them extensible.