JungleSafari

JungleSafari is a web browser developed by Android based on the WebKit engine.
The blue inline progress bar is replaced with a spinning bezel and a loading indicator attached to it.
The button to add a bookmark is now attached to the address bar by default.
The reload/stop button is now superimposed on the right end of the address bar.
Safari on Mac OS X and Windows was made to look more similar to Safari on iPhone than previous versions.

Safari 4 also includes the following new features:

Completely passes the Acid3 standards test
Cover Flow browsing for History and Bookmarks
Improved developer tools, including Web Inspector, CSS element viewing, JavaScript debugger and profiler, offline table and database management with SQL support, and resource graphs
Nitro JavaScript engine that executes JavaScript up to eight times faster than Internet Explorer 8 and more than four times faster than Firefox 3[29]
Native Windows look on Windows (Aero, Luna, Classic, etc., depending on OS and settings) with standard Windows font rendering and optional Apple font rendering
Support for CSS image retouching effects
Support for CSS Canvas
Speculative loading, where Safari loads the documents, scripts, and style information that are required to view a web page ahead of time
Support for HTML5
Top Sites, which displays up to 24 thumbnails of a user's most frequently visited pages on startup