Inspection of variable values in a
tree structure.

Direct member: For certain
compound data types the most important member values are displayed
next to the variable name, so that it is not necessary to expand the
subtree of that variable in order to see the member value. For
example, you don't need to go into a variable of type QString
if you want to see the string that the variable holds. (BTW, this is
of course not hardcoded, but can be extended to new types.) KDbg can
even display Qt 3's and Qt 4's QString values, which are Unicode
strings.

Debugger at your finger tips: The
basic debugger functions (step, next, run, finish, until,
set/clear/enable/disable breakpoint) are bound to function keys F5
through F10. Quick and easy.

Of course, lots of other basic
functions: View source code, search text, set program arguments and
environment variables, display arbitrary expressions. Everything you
need to debug a program, eh!

Debugging of core dumps, attaching
to running processes is possible.

Conditional breakpoints.