Greasemonkey - Customize the way a web page displays or behaves, by using small bits of JavaScript.
Shortwave Bookmarklet - Shortwave is an extensible quick-search and shortcut bookmark.
Violentmonkey - Violentmonkey is a userscript manager to support running userscripts in web pages.
Shortmarks - Shortmarks is like an enhanced speed dial for web browsing.
GreaseKit - GreaseKit is a SIMBL plugin, that adds user scripting to Safari, Mailplane, Diet Pibb.
Audiorealm.com - AudioRealm is your destination for thousands of radio stations from all over the globe.