HT Editor
An open source executable file editing tool that supports
the MZ, PE and LE file formats including code analyzer.
For Windows and Unix.
http://hte.sourceforge.net/
strace
trace system calls and signals
ltrace
A library call tracer
ERESI – Trac
The ERESI Reverse Engineering Software Interface is a multi-architecture
binary analysis framework with a tailored domain specific language
for reverse ...
http://www.eresi-project.org/