Hecate vs Hex Fiend

Hecate is a free terminal hex editor for Linux, macOS, and Windows. It displays interpretations of byte values beneath their hexadecimal representations, including text, bit patterns, integers, and floating-point values. Users can move the cursor with Vim-like controls, edit data in place, and write changes to disk. The README also lists tabbed browsing, large-file support, full-file searches, and expressions for specifying file offsets. Interpretation options include toggling endianness and signedness, decoding dates, and configuring the date epoch. The project describes byte interpretation as useful for reverse-engineering work. Downloads are linked for Linux, Mac OS X, and Windows, and the README provides a Go command for compiling the editor from source. Hecate is licensed under MIT. The releases page lists version 0.0.1 as the latest release; the license states that the software is provided without warranty. The repository includes usage instructions and a help screen command, but does not state a support service.

Hex Fiend is a free, open-source hex editor for macOS that can insert, delete, rearrange, and overwrite binary data. It can search large files and compare them while accounting for insertions and deletions. The editor does not keep files in memory or require a full file to be loaded. Its smart saving avoids rewriting unchanged portions and does not require temporary disk space. The maker says it can handle files as large as users can create and reports testing files up to 118 GB. A data inspector interprets values as signed or unsigned integers and floating-point numbers in big- or little-endian formats. Scripted binary templates visualize file structure, and an embeddable framework provides hex and data views under a permissive BSD-style license. The official site lists version 2.18.1 and requires macOS 10.14.6 or later. The Mac App Store distribution collects no data and makes no network requests; the direct-download distribution checks for updates without collecting or storing user data. Hex Fiend is notarized for macOS 10.14 and later.