http://www.codef00.com/projects.php ...Sure we have GDB, but GDB and all it's various frontends tend to lean towards debugging applications to which we have the source. What I really want is a debugger which is as functional and useable as OllyDbg but for Linux (and possibly more). So I started my own debugger which is currently based on the ptrace API, and it is coming along very nicely. The hex dump views are based on the QHexView I developed which gives things a very polished look...
Есть же графические оболочки и для gdb и для родного отладчика. Может все-таки их исходники расширить недостающими функциями, чем велосипед заново изобретать. Кстати gdb прекрасно без отладочных данных обходится : -se=<экзешник>