Q22 is a cross-platform binary file editor and the successor to Catch22 HexEdit. It retains the original application’s direct binary-editing model while offering a modern interface built with Qt 6.
The software combines hexadecimal editing with file-structure inspection and disassembly tools. It supports Linux and Windows.
This is free and open source software.
Key Features
- Open and edit binary files, including large files.
- Cut, copy, paste, insert and delete data.
- Undo and redo editing operations.
- Display data in hexadecimal, decimal, octal, binary and text forms.
- Group data as 8-bit, 16-bit, 32-bit or 64-bit values.
- Search file contents and jump directly to offsets.
- Inspect files using C-style structure definitions.
- Built-in structure support for PE and ELF files.
- Expand headers, sections, imports, exports, symbols and related tables.
- Create custom structure definitions using the Strata language.
- Disassemble x86, x86-64, ARM, Thumb and AArch64 machine code.
- Automatically detect PE and ELF entry points.
- Browse discovered functions and move between disassembly and binary data.
- Add persistent bookmarks, annotations and highlights.
- Import and export Base64, UUEncode, Intel HEX and Motorola S-record data.
- Copy and paste data as text, raw data, C, C++, assembler or HTML.
- Calculate checksums and extract strings from files.
- Light, dark and system themes with custom palette support.
Website: github.com/strobejb/q22
Support:
Developer: James Brown
License: GPL-3.0-or-later
Q22 is written in C++. Learn C++ with our recommended free books and free tutorials.
Related Software
| GUI Hex Editors | |
|---|---|
| ImHex | Hex editor with many advanced features |
| Hexerator | Hex editor focused on binary file exploration and aiding pattern recognition |
| rehex | Hex editor for reverse engineering |
| Okteta | Simple KDE editor for the raw data of files with good range of features |
| GHex | Hex editor for GNOME |
| wxHexEditor | Hex and disk editor which uses the wxWidgets GUI libraries |
| Fhex | Aims to be a lightweight yet full-featured hex editor. |
| wxMEdit | Improved version of the discontinued MadEdit |
| HexWalk | Hex editor, viewer, and analyzer |
| BinEd | Editor for binary data (hex viewer/editor) written in Jav |
| Bless | Gtk# hex editor |
| Chirurgien | Helps understand and manipulate file formats |
Read our verdict in the software roundup.
 Explore our comprehensive directory of recommended free and open source software. Our carefully curated collection spans every major software category.This directory is part of our ongoing series of informative articles for Linux enthusiasts. It features hundreds of detailed reviews, along with open source alternatives to proprietary solutions from major corporations such as Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk. You’ll also find interesting projects to try, hardware coverage, free programming books and tutorials, and much more. Discovered a useful open source Linux program that we haven’t covered yet? Let us know by completing this form. |
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