Apple's Safari 5 brings a whole new world of enhancing your browser with their new extension architecture. Just some HTML, CSS, and Javascript can make the Safari browser do just about anything, from modifying the pages that you view (what we call content hacks), add or remove functionality from specific websites like changing the colors of a certain website (site hacks), and adding functionality to the Safari browser itself like adding buttons, new navigation controls (browser hacks).
Apple's Safari 5 brings a whole new world of enhancing your browser with their new extension architecture. Just some HTML, CSS, and Javascript can make the Safari browser do just about anything, from modifying the pages that you view (what we call content hacks), add or remove functionality from specific websites like changing the colors of a certain website (site hacks), and adding functionality to the Safari browser itself like adding buttons, new navigation controls (browser hacks).
Starting out
Download Safari 5 How to Enable Safari Extensions
Finding Extensions
Our own Safari Extension reviews Some collections of favorite extensions from around the web.
Developer Resources
Getting to know Safari 5's Extensions on Ars Technica How to Build a Safari Extension from the Apple Blog.