Hex Editor

A full-featured hex editor that runs in your web browser using HTML5/JavaScript technology.

Tags: Free, Web App

Links: Website

ImHex is an open-source hex editor suitable for reverse engineers and programmers.

Tags: Open-source, Free, Windows, macOS, Linux

Link: Website

Using VS Code + HexEditor Plugin can achieve hexadecimal editing.

Tags: Free, GUI, macOS, Windows, Linux

UltraEdit is a well-established text editor and also a hexadecimal editor.

Tags: Paid, GUI, macOS, Windows, Linux

Link: Website

Hex Fiend is a fast, clever, and free Hex Editor that has many unique features: Insert, delete, rearrange. Hex Fiend does not limit you to in-place changes like some hex editors.

Tags: Free, GUI, macOS

Links: App store

HxD is a reeware Hex Editor and Disk Editor. It is a carefully designed and fast hex editor which, additionally to raw disk editing and modifying of main memory (RAM), handles files of any size. The easy to use interface offers features such as searching and replacing, exporting, checksums/digests, insertion of byte patterns, a file shredder, concatenation or splitting of files, statistics and much more.

Tags: Free, GUI, Windows

Links: Website