Core Analyzer
A power tool to debug core dump, memory corruption, optimized code.
...It is thorough, labor-free, and insightful. I use the tool on daily basis and it is proved to be invaluable to debug many tough issues.
The tool supports x86_64 architecture including Windows/RedHat/SUSE/MacOSX (32-bit and 64-bit).
For more information, please see the project's web site