CGDB is a curses-based interface to the GNU Debugger (GDB). The goal of
CGDB is to be lightweight and responsive; not encumbered with
unnecessary features.

The interface is designed to deliver the familiar GDB text interface,
with a split screen showing the source as it executes. The UI is modeled
on the classic Unix text editor, vi. Those familiar with vi should feel
right at home using CGDB.

WWW: http://cgdb.sourceforge.net/