Malcat is a feature-rich hexadecimal editor / disassembler for Windows and Linux targeted to IT-security professionals. Inspect more than 40 binary file formats, dissassemble and decompile different CPU architectures, extract embedded files and scan for Yara signatures or anomalies in a fast and easy-to-use graphical interface. Don't like what you get? Malcat is also heavily customizable and scriptable using python.

PEStudio is a unique tool that performs the static investigation of 32-bit and 64-bit executable. Malicious executable often attempts to hide its malicious behavior and to evade detection. In doing so, it generally presents anomalies and suspicious patterns. The goal of PEStudio is to detect these anomalies, provide indicators and score the executable being analyzed. Since the executable file being analyzed is never started, you can inspect any unknown or malicious executable with no risk.