HEX-ED is a Free Portable Hex Editor that is both small and efficient. It was originally used by it’s author to modify programs written in assembler. Hex-Ed began life decades ago, as a BASIC program compiled in BASCOM under CP/M. The author has since recompiled Hex-ED in Visual C for Windows, first 16 bits and now 32 bits.
HEX-ED Portable Hex Editor
Authors Website: Hex-ED
License: freeware
Download: Get the HEX-ED zip