Hex Editor Neo vs REHex

Hex Editor Neo is Windows software for editing binary files, including files of any size and physical disks such as HDDs, SSDs, optical discs and USB disks. Editing tools cover typing, cutting, copying, pasting, filling, deleting, inserting, importing and exporting data. Search can match binary, hexadecimal, decimal, octal, float, double, character, ASCII and Unicode patterns, including wildcards; replacement supports arbitrary-length patterns and regular expressions. The editor provides unlimited undo and redo, with operation history that can be saved or loaded. It creates 32-bit and 64-bit binary patches, as well as self-installing executable patches with file-hash checking. Portable installation avoids registry changes, shell extensions and shortcuts. More than 130 text encodings are supported, including UTF-8 and UTF-16. Settings can be stored in the registry, local files or shared locations such as OneDrive and Dropbox. The Free Hex Editor Neo plan costs nothing and includes basic editing features. Free Edition users receive limited or no support; email and phone technical support is provided to registered users of Standard, Professional and Ultimate editions.

REHex is a free hex editor for reverse engineering and other work with binary data, available for Linux, macOS and Windows. It supports files larger than 1 TB, decodes integer and floating-point values, and displays machine-code disassembly inline. Users can compare whole files or selected regions side by side, map virtual addresses, and highlight or annotate byte ranges. Editing and analysis tools include bit editing, checksumming and bitmap visualization, along with common encodings such as ASCII, Unicode and ISO-8859-X. REHex imports and exports Intel HEX files. Binary Templates can annotate data automatically, while Lua scripting and plugins extend its functionality. Downloads include Windows installers and ZIP archives, a macOS DMG, and 32-bit and 64-bit Linux AppImages; packages are also documented for Debian, Ubuntu, Fedora, Red Hat Enterprise Linux, FreeBSD and openSUSE. The project identifies its license as GPL-2.0. The download page lists version 0.64.0, released on 2026-04-03, as the latest release. Bug reports and feature suggestions can be submitted as GitHub issues.