Hex-Ed – Ultra-tiny 32-bit freeware HEX editor

Generally we refer to "16-bit editor" as "hexadecimal editor", said in this way everyone shoud understand what it is used for (often used for modifying software and game programs). Hex-Ed is a ultra-tiny (even smaller than "HEdit") and powerful hexadecimal editor, though not so strong as UE (UltraEdit), but it is free and portable.