A portable graphical user interface (GUI) library for embedded systems.

• Flexible design of user menus and dialog boxes.
• Portable: Input and output device independent.
• Low memory consumption.
• Many input fields: Text/number fields, push buttons, etc.
• Full integration into Arduino IDE with many examples.
• Complete documentation online
• Multiple font support.
• Debounce algorithm included.
• Many examples.

The m2tklib GUI library is designed and created by olikraus (http://code.google.com/p/m2tklib/) and is mirrored on GitHub by punklibrarian.

Note: I have nothing to do with the development of m2tklib and do not know olikraus, I just like m2tklib and wish to tinker and happen to use GitHub over Google Code.