This is cross-platform (wxWidgets-based) hexadecimal editor for reverse
engineering, and everything else.  It features:

  - Large (1TB+) file support
  - Decoding of integer/floating point value types
  - Inline disassembly of machine code
  - Highlighting and annotation of ranges of bytes
  - Side by side comparison of selections
  - Lua scripting support with documented API
  - Virtual address mapping support

WWW: https://github.com/solemnwarning/rehex