Anjuta is a very versatile Integrated development environment for 
c and c++.  Written in GTK/GNOME and written for GTK/GNOME, 
it features many advanced programming tools and utilities.  It is 
basically a GUI interface for the bunch of command line programming 
utilites and tools available for FreeBSD, which are usually run in console
and are very user unfriendly.

WWW: http://www.anjuta.org/