Hex Fiend launches instantly even with huge files. It does not need to keep your files in memory. Fast. Open a huge file, scroll around, copy and paste, all instantly. Find what you’re looking for with fast searching. Binary diff. Hex Fiend can show the differences between files, taking into account insertions or deletions. Smart saving.

Hex Fiend's main document window, showing bookmarks, the data inspector, and the status bar. Back

Hex Fiend itself can handle it, but most other applications don’t really like having terabytes of data dropped on them. Hex Fiend will try to protect you if it can. Here’s what Hex Fiend says if you try to paste a hundred or so petabytes of data into TextEdit.

Hex Fiend's binary diff feature in action. Back