The Omni Group today released the final version of OmniWeb 4.5, a major update to its popular Mac OS X Web browser. Version 4.5 incorporates the open source WebCore and JavaScriptCore frameworks from Apple, bringing greatly improved support for the latest Internet standards like CSS, HTML, XHTML, and JavaScript. The update also contains many enhancements and fixes a number of bugs over previous versions. Improvements have been made to bookmarks, AutoFill, plug-ins, history indexing, and more. OmniWeb 4.5 requires Mac OS X 10.2 or later.