GDB is controlled at a low level through the GDB machine interface, GDB/MI, which can be used to wrap GDB in a user interface or as part of a larger program, and it considerably extends the range of options available to you.
In this section, I will describe three that are well suited to debugging embedded targets: the Terminal user interface, TUI; the data display debugger, DDD; and the Eclipse C-development Toolkit (CDT).