Frhed is a lightweight, classic option known for being small and fast, though it may struggle with files larger than 4GB depending on available RAM. Key Features to Look For

Advanced tools like 010 Editor (30-day free trial) or ImHex use "binary templates" to parse raw data into human-readable structures.

Hex Editor Neo is optimized for extra-large files. While it uses a "freemium" model, the free version includes all basic editing features like cut, copy, paste, and find/replace.