Hex Editor

Editing file in binary format (hex mode).

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

Tags: Free, Web App

Links: 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