OllyDbg - OllyDbg is a 32-bit assembler level analysing debugger.
HxD - HxD is a carefully designed and fast hex editor which, additionally to raw disk editing and...
strace - Trace system calls and signals. A diagnostic, debugging and instructional userspace utility.
PilotEdit - PilotEdit Lite is an advanced text and hex editor that supports opening of files larger than 4GB.
X64dbg - X64dbg is a debugging software that can debug x64 and x32 applications.
WinHex - WinHex hex editor, disk editor, RAM editor. Binary editor for files, disks, and RAM. Download HEX EDITOR. Sector editor. Drive editor.