Hex Editor / Reverse Engineering
UltraEdit by IDM Computer Solutions is a veteran commercial text editor that also includes a full hex-editing mode, letting users switch between text and byte views of the same file. It handles very large files, offers powerful search-and-replace including regular expressions, column editing, and scripting/macros for automating repetitive changes. In tuning and firmware contexts it is used to view and edit binary reads in hex, search for byte or ASCII signatures such as ECU identifiers and software numbers, and script bulk edits across files. While not a dedicated reverse-engineering suite, its blend of robust text tooling and a capable hex mode makes it a practical everyday editor for people who work across scripts, logs, and binaries. It runs on Windows, macOS, and Linux.
UltraEdit is a general editor tuners keep for quick hex peeks and signature searches; Softechpro handles the actual emissions/DTC modifications and checksum correction automatically, so UltraEdit stays a lightweight inspection companion rather than the tool doing the tuning.
See Softechpro plansTry the file service