NOTE: a native port of the application is available for Linux and MAC!
The IDA Pro Disassembler and
Debugger is an
hosted on Windows, Linux, or Mac OS X. IDA Pro has become the de-facto standard
for the analysis of hostile code, vulnerability research and COTS validation.
Can disassemble many different CPUs (IA-32, PowerPC, JVM, Atmel AVR) and file formats (EXE, DLL, VXD, COFF, ELF, etc).
Available as a free version (older), as a limited trial version and as regular payware.