WinHex is a hex editor, disk editor, and RAM editor with a lot of features, such as template editing, drive cloning and imaging, encryption.

It allows to concatenate, split, unify, analyze, convert, and compare files. Flexible search and replace functions are included,
also a data interpreter and a sophisticated undo and backup mechanism.
The disk editor supports FAT12, FAT16, FAT32, NTFS, and CDFS drives as well as physical disks.
The RAM editor can prove particularly useful for debugging purposes.

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