Since there are quite a few reverse-engineering tools, it is not easy to name the best reverse-engineering software program. Each solves a specific problem in a multi-step reverse-engineering process. However, here are the essential tools used by researchers for reverse engineering: IDA Pro, Hex Rays, CFF, Explorer, API Monitor, WinHex, Hiew, Fiddler, Scylla, Relocation Section Editor. Of course, specialists can only use most of these tools for specific tasks. However, in combination, they give you all the capabilities you need for advanced software analysis.