1Fh Binary/Hex Editor

DataWorkshop, a flexible, multiplatform binary data editor with user defined structures written in java

Freeware Hex Editor XVI32

Cut, copy, paste, insert and delete data with no decrease in performance with larger files and unlimited multi-level undo and redo capability. For Microsoft Windows, and has maximum file size limit of 4Gb.

Small Windows executable that supports large file size, drag-and-drop editing, and direct editing of binary values. [Open Source]

HexStar Version 2.11

A Hex Editor designed for integration into Windows properties pages.

Hack - a Win32 hex editor with REXX scripting allows you to write script to drive the Hex/ASCII/disassembler views available [Public domain]

Windows or DOS program with text extractor, bit editor, search, and multi-level undo.