Alexander Wilson Studios today updated its list of free Internet Explorer toolbar icons for Mac OS X. The update adds 50 new icons, along with 15 revisions of previously-released icons. Nine categories of over 150 icons (including one for MacMinute) are available with easy drag-and-drop usage. Categories include Commerce (Stores & Banks), Entertainment, Mac-Related, Nonprofit, Search and Reference, Software, Technology & Science, Web Services, and World (News & Info).