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.
Ghidra is a free, open-source software reverse-engineering framework released by the U.S. National Security Agency. It provides a disassembler, an interactive decompiler that recovers C-like pseudocode, cross-references, scripting in Java and Python, and collaborative project support. It supports a broad set of processor architectures, including ones found in automotive ECUs such as PowerPC, and can be extended with SLEIGH processor definitions for others like Infineon TriCore. In ECU research it is used to disassemble and decompile firmware, understand control logic, locate map-access routines, checksum algorithms, and diagnostic/DTC handling, and to document memory layout. It is a heavyweight, expert-level tool for people building tuning solutions and understanding how an ECU actually computes, not an end-user remapping application.
Hex Workshop (Hex Editor / Reverse Engineering, BreakPoint Software) and Ghidra (Hex Editor / Reverse Engineering, NSA (open source)) 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 Free NSA reverse-engineering suite with decompiler for ECU firmware
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