Safari 4.0.4 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 2009-11-11 for public access and a brief summary of important updates and change log pertaining to this edition can be read below.

Safari 4.0.4 is built on Webkit 531.21.10 rendering engine and has been released with improvements in JavaScript performance and support for third party plug-ins.

Nitro JavaScript engine now has been optimized to perform better and faster than before which makes the browser faster than its top competitors like Firefox and Opera.There is also improved support for Yahoo mail, third party plug-ins in addition to known security fixes.