North State Framework - Version 2.1 The North State Framework (NSF) is a class library enabling rapid implemention of UML State Machine diagrams in C++ or C#. With NSF, your design can be up and running in a matter of minutes on a variety of platforms including Windows, WinCE, Linux, and eCOS. In addition to state machine support, NSF includes built-in utility classes for threading, timers, and tracing, providing a complete platform for developing highly scalable and reliable designs. For more details, download the software development kit (SDK), which contains example code and framework documentation.