Portable Hex Editor

Frhed is Free Hex Editor or Binary File Editor for Windows. A Portable Hex Editor version of the Frhed is also available, making the tool ideal for USB flash drive usage.

HEX-ED is a Free Portable Hex Editor that is both small and efficient.

Hexplorer is a free portable Hex Editor that is very similar to HxD.

HxD is a Portable hex editor, disk editor, memory editor, and file viewer. A popular freeware hex reader tool that has been considered by many to be one of the best for raw disk editing and modifying of (main Memory) RAM.