Q22

What Q22 is

Q22 is a free, open-source binary file editor for Windows and Linux, and the successor to Catch22 HexEdit for Windows. It can open and modify large binary files with cut, copy, paste, insert, delete, undo, and redo. Data can be displayed as hexadecimal, decimal, octal, binary, or text, with bytes grouped into 8-, 16-, 32-, or 64-bit values. Structure View expands headers, sections, imports, exports, and symbols in PE and ELF files, and accepts custom .strata definitions in Strata. Its disassembler handles x86 in 32-bit and 64-bit modes, ARM, ARM Thumb, and AArch64, and detects PE and ELF entrypoints automatically. Bookmarks and highlights mark positions in the hex display, with bookmark state saved for future use. Import, export, and clipboard formats include raw data, Base64, Intel HEX, Motorola S-records, HTML, C, C++, and assembler-style data. Other panels cover file properties, checksums, and string extraction. Themes, palettes, configurable preferences, and docked panels provide display and layout options. Q22 is licensed under GPL-3.0-or-later.