Download the offline handbook

Take the complete HTML handbook with you: every chapter, search, the A–Z index, SVG diagrams, cited source files, Markdown sources and license notices.

Download ZIP

1. Download and extract the ZIP file completely.
2. Open xnu-source-handbook/index.html in your browser.
3. Keep the extracted folder together so its links and reading tools continue to work.

No web server, installation or network connection is needed. Enable JavaScript for search, the A–Z index and source previews/downloads. Chapters and diagrams can also be read without JavaScript.

Read the handbook · Licenses and attribution