AXE, the Advanced Hex Editor

The Advanced Hex Editor (AXE) is a powerful hex editor for Microsoft Windows 95/98/ME/NT/2000/XP. AXE has two major benefits:
Bookmarks, jumps, search and replace -- AXE is convenient
With AXE you can type, cut, copy, paste, insert, and delete hex, ASCII, or Unicode text. You can drag and drop from one document to another, you can product text or HTML reports. You can open extra synchronized views of a document. You can goto, find, replace, and jump. You can mark changed areas, mark interesting areas, mark areas that differ from another version of the document, set bookmarks, and zoom the view in and out to see it all clearly.
Huge files, memory edit, structures, scripts -- AXE is powerful
You can define ranges of marked bytes, then search in them or apply arithmetic to them. You can define structures, and then edit areas of the document using the structure as a template. You can create and run scripts. You can work with files up to 1.5Gb without slowing your system. You can edit disks, drives, and memory.

Those are the big features of AXE. There are more, like the base converter, checksum generator, calculator, pattern-finder, differ, and unbuffered 'huge file' mode.

http://www.axe-editor.com/download.shtml

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