GLib
Universal utility library most commonly used with GTK+ and GNOME. Provides a main loop implementation for event-based programming, portable multi-threading, portable file/pipe I/O, many utilities such as command line parsing, timers, XML parsing, regular expressions, Unicode manipulation, and also general-purpose data structures.
Website: http://developer.gnome.org/glib/
Platforms supported: Linux, Win32
Headers to include: glib.bi
Examples: in examples/misc/glib/