radare2 is an advanced commandline hexadecimal editor with a set of tools for working with binary files. Most of tools that come with radare2 have been designed for reverse engineering file formats, firmwares, programs, libraries, etc. Radare2 project started as a forensics tool, a scriptable commandline hexadecimal editor able to open disk files, but later support for analyzing binaries, disassembling code, debugging programs, attaching to remote gdb servers..