Tool comparison
Hex Workshop, by BreakPoint Software, is a long-standing commercial hex editor suite for Windows. It combines byte-level editing with a data inspector, structure viewer for mapping records over binary offsets, arithmetic and bitwise operations, base converter, and a broad set of checksum and digest algorithms (CRC, checksums, hashes). File and sector comparison tools highlight differences between two binaries. In ECU work it is used to examine firmware reads, apply structured edits, run arithmetic on data blocks, and validate or recompute checksums after changes. Its bookmarking and data-structure features make it useful for documenting where maps, identifiers, and code live inside a dump. It suits reverse engineers and tuners who want structure-aware editing beyond a plain byte grid.
WinHex, from X-Ways, is a long-established Windows hex editor, disk editor, and computer-forensics tool. In ECU work it is used as a general-purpose binary editor for firmware and calibration dumps, viewing and editing raw bytes, searching for hex and ASCII patterns, comparing two files to spot differences, which is useful for locating changed maps between an original and modified dump, computing hashes and checksums, and analyzing file structure. Its data interpreter, templates, and byte-level editing help reverse engineers understand map layouts, byte order, and data types inside an ECU image. Beyond automotive use it is widely applied in digital forensics and data recovery. WinHex is a raw-byte tool: it does not know ECU maps or checksums automatically, so it is used alongside dedicated map editors and definition files.
Hex Workshop (Hex Editor / Reverse Engineering, BreakPoint Software) and WinHex (Hex Editor / Reverse Engineering, X-Ways Software Technology AG) compete in the same space, so the choice comes down to coverage, workflow and price for your specific ECUs. Commercial Windows hex editor with data inspector, structures and checksums Professional hex and disk editor used for binary and ECU-file analysis
Whichever you flash with, Softechpro Solutions auto-applies DPF/EGR/AdBlue/DTC-off modules and Stage patterns with automatic checksum correction across ~1,400 firmwares on Windows & macOS — the fast way to get the actual file edits done.
See SoftechproMore on Hex Workshop