The GNUstep Base Library is a library of general-purpose,
non-graphical Objective C objects.
For example, it includes classes for strings, object collections,
byte streams, typed coders, invocations, notifications,
notification dispatchers, moments in time, network ports, remote
object messaging support (distributed objects), and event loops.

It provides functionality that aims to implement the non-graphical
portion of the Apple's Cocoa frameworks (the Foundation library)
which came from the OpenStep standard.