HextEdit

HextEdit is a fast and lightweight hex editor for viewing and editing binary data. Quickly edit virtually any file type at a low level in a simple and native app.
Key Features
* Byte inspector
Edit bytes as little or big endian signed or unsigned integers, floats, or doubles. View values as binary, decimal, or hexadecimal numbers.
* Fast incremental find
Find strings, integers, and byte patterns in files. HextEdit has incremental background find, allowing you to continue working while searching very large files.
* Fast and native
HextEdit runs natively on both Intel-based CPUs and Apple Silicon for great performance. Built using Swift, HextEdit uses an efficient data structure for fast editing of files big or small.
* Designed for macOS
From the app icon to the full-height sidebar, HextEdit is designed to fit in with macOS and resizes well to adapt to any use case.
And more:
* Fast and native!
* Insert, delete, copy, or paste bytes or strings
* Undo/redo
* Search for strings, integers, and bytes
* Edit bytes as integers, floats, or doubles in any radix
* Jump to offset
* Zero selected bytes
* File version history