1)   Hex Editor 3.12
Hex Editor Software - Binary and Hex file editing tool for Windows with Multi-Window, Multi-Document Interface, Text Viewer, Advanced Search and Replace features. Edit your Exe Code, Hex Dump, Avi, Mpeg, Jpeg and other files with HHD HexEditor.

 2)   Free Hex Editor 3.12
Free Hex Editor Software - Binary and Hex file editing tool for Windows with Multi-Window, Multi-Document Interface, Text Viewer, Advanced Search and Replace features. Edit your Exe Code, Hex Dump, Avi, Mpeg, Jpeg and other files with HHD HexEditor

 3)   DumpHex 1.0.1
DumpHex is a Hex-Viewer for the Win32-command line. With its capabilities of changing all settings, from "start offset of hex dump" to "non printable char" per command line, DumpHex is a very useful tool for programmers.