Ddd

ddd (Data Display Debugger) is a graphical wrapper for gdb and other debuggers, using motif. It can be much easier to use than most regular debuggers as you don't need to be familiar with the commands or tools needed to operate them.

It provides other features that can be advantageous over using the command line interface for the debuggers, such as visualization of data structures, and point-and-click setting of breakpoints or watches.