HxD Hex Editor is a well designed, rapid hex editor that handles files of any size. In addition you can work with raw disk editing and RAM modification.

HxD Hex Editor has a simple, easy-to-use interface that has lots of features, including checksums/digests, searching and replacing, exporting, insertion of byte patterns, concatenation or splitting of files, a file shredder, and statistics.

Key Features include:

• RAM-Editor.
• Edit the main memory.
• Memory sections are tagged with data-folds.
• Disk-Editor: hard disks, floppy disks, ZIP-disks, USB flash drives, CDs.
• RAW reading and writing of disks and drives.
• Supports Win9x, WinNT and higher.
• Instant opening.
• Up to 8EB; opening and editing is very fast.
• Liberal, yet safe, file sharing with other apps.
• Flexible and fast searching/replacing for several data types.
• Checksum-Generator: Checksum, CRCs, Custom CRC, SHA-1, SHA-512, MD5.
• File compare (simple).
• Exporting of data to several formats.
• Data types: text (including Unicode), hex-values, integers and floats.
• View data in Ansi, DOS, EBCDIC and Macintosh character sets.
• Source code (Pascal, C, Java, C#, VB.NET).
• Insertion of byte patterns.
• Splitting or concatenating of files.
• Navigating to nibbles with Ctrl+Left or Ctrl+Right.
• Visual Studio/Visual C++, WinHex, HexWorkshop.
• Unlimited undo.
• Graphical representation of the byte/character distribution.

Overall HxD Hex Editor is a useful app that leaves a small footprint, consumes little resources and has a simple interface to work with. It is fast and efficient, and it gives you greater freedom than you may get with other editors.