Safari 11.0 Compatibility Safari 11.0 ships with iOS 11.0 and macOS 10.13. It is also available on macOS 10.12.6 and 10.11.6. Highlights of Safari 11.0 Web conferencing. Implements peer to peer conferencing with the WebRTC standard. Metrics. Test your code using new tools for measuring code and network performance. WebAssembly. Your web apps are smaller and load faster when written with the new We