Safari 5.1.7 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 2012-05-09 for public access and a brief summary of important updates and change log pertaining to this edition can be read below.

Safari 5.1.7 is built on Webkit 534.57.2 rendering engine and the last build to Support Windows Platform. Apple ends developing the browser for Windows Platform as players like Chrome, Opera and Firefox starts releasing frequent updates with new technologies in browser.

This edition of Safari improves responsiveness in low memory usage and also fixed errors in web pages needing authenticated sign-ins.