HexEd.it vs Q22

HexEd.it is a browser-based editor for inspecting and changing binary files and hexadecimal data. Processing takes place in the browser, and the site says it does not send file data to its server. Once the app has been downloaded during a first visit, it can also work offline. Analysis and editing tools include viewing data in multiple numeric formats, bit-wise changes, search and replace, bookmarks, and multiple selections. HexEd.it can decode and encode Motorola S-Record and Intel HEX files, and identify more than 20,000 file types. Its hash lookup can query Google, VirusTotal, MetaDefender Cloud, BitBaan MALab, and Hybrid Analysis without uploading the file. The feature page says it can process files up to several terabytes; the manual reports testing on files up to 150 GiB. The site lists HTTPS, a restrictive Content Security Policy, Feature Policy, and Subresource Integrity as security measures. It is free for commercial and non-commercial use, but the maker says it is not open-source.

Q22 is a free, open-source binary editor for Linux and Windows, and the successor to Catch22 HexEdit for Windows. It opens large binary files and supports cut, copy, paste, insertion, deletion, undo, and redo. Data can be viewed 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 .strata definitions. The disassembler handles x86 32-bit and 64-bit, ARM, ARM Thumb, and AArch64, while detecting PE and ELF entrypoints. Bookmarks and highlights retain positions for later use. Clipboard, import, and export formats include raw data, Base64, Intel HEX, Motorola S-records, HTML, C, C++, and assembler-style data. Panels provide file properties, checksums, and string extraction. Themes, palettes, preferences, docked panels, and platform-specific window chrome are configurable.