HxD is a carefully designed and fast hex editor including raw disk editing, modifying foreign RAM and handling files of any size. Its clear interface offers searching/replacing, exporting, checksums/digests, insertion of byte patterns, a file shredder, concatenation or splitting of files, statistics and more.

Editing works like in a text editor with functions streamlined to hide differences that are purely technical.
For example you can view a drive just as one stream, can open it under Windows 9x or Windows NT+, undo, search, save, export or whatever you could do with a file. There is no sector-limited editing that gets in your way.
The same holds true for the file size (also > 4 GB), which doesn't affect editing speed and still supports undo. Or have a look at the RAM-editor that supports data-folding on every memory section and hides by default inaccessible memory, for a better overview but keeps the real offsets.

Features
Instant opening regardless of file-size (>4GB is no problem: opening, editing are very fast)
Fast searching: forward, backwards or from beginning
Replace function (fast even for millions of edits)
Search and replace support Unicode, Ansi-text and Hex-values
Disk-Editor: RAW reading and writing of disks and drives (hard disks, floppy disks, USB-disks, CD-ROM, ...) for Win9x, WinNT and higher
RAM-Editor: can read and write virtual memory of other processes
Data-folding for better overview in RAM-Editor
Exporting of data to source code (Pascal, C, Java) or as formatted output (plain text, HTML, Richtext, TeX) or to hex formats:
Motorola S19 Records, Motorola S28 Records, Motorola S37 Records, 16 Bit Intel Hex, 20 Bit Intel Hex, 32 Bit Intel Hex
Checksum-Generator: Checksum-8, Checksum-16, Checksum-24, Checksum-32, CRC-16, CRC-16 CCITT, CRC-32, Custom CRC, SHA-1, SHA-256, SHA-384, SHA-512, MD-2, MD-4, MD5
Insertion of byte patterns
File shredder for safe file deletion
Splitting or concatenating of files
File compare (simple)
Statistical view: Graphical representation of the character distribution. Helps to identify the data-type of a selection.
Support for ANSI, DOS/IBM-ASCII, EBCDIC and Macintosh charsets
Byte grouping (1, 2, 4, 8 or 16 bytes packed together in one column)
Hex only or text only mode
Progress-window displays on long time operations (shows remaining time and has a cancel-button)
Unlimited undo
Modified data is highlighted
Internet update checker
Easy to use interface with modern icons
Ghost caret: displayed around the corresponding character/hex value on the inactive column, the caret is placed on the active column
Goto address
Printing
Overwrite or Insert Mode
Cut, Copy, Paste Insert, Paste Write
Clipboard support for other hex editors (Visual Studio/Visual C++, WinHex, HexWorkshop, ...)
Bookmarks: Ctrl+Shift+Number(0-9) sets a bookmark, Ctrl+Number(0-9) goes to a bookmark
Navigating to nibbles with Ctrl+Left or Ctrl+Right
Flicker free display and fast drawing

http://www.mh-nexus.de/downloads/HxDBetaen.zip

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