SB Hexidecimal Editor
SB Hexidecimal Editor is a tool that allows you to view or edit the raw contents of a file in the Windows environment. Editing files is simple, works like most text editors. You can use HxEdit to analyze files, patch ROM files for emulators.
Features
Hex and ASCII displays
Data Explorer to view decoded values
Works with large files.
Two synchronous cursors in Hex and ASCII modes
Search ASCII or Hex strings
Count occurences of ASCII or Hex strings
Replace ASCII or Hex strings.
Fast Replace All
Copy block to Windows Clipboard
Fill block with data
Wheel mouse support
Simple protect mode from saving changes if just testing.
Bookmarks
Minimum System Requirements
·  Windows 2000, Windows XP, Windows 2003, Vista, Windows 7
·  64 MB RAM
·  800 x 600 display using 256 color