Safari 5.1.1 is a web browser developed by Apple Inc, available for download in full install version for Windows platforms from legacy sources. This version of Safari was officially released on 2011-10-12 for public access and a brief summary of important updates and change log pertaining to this edition can be read below.

Safari 5.1.1 is built on Webkit 534.51.22 rendering engine and has been released with support for iCloud syncing in addition improvements on performance, stability, and security.

With support for iCloud syncing, users can now get their bookmarks and reading list from the cloud. JavaScript performance has been improved in this edition also. The developers has worked on many areas of improvements including usability, compatibility and accessibility.