The Omni Group today released the first public beta of OmniWeb 4.5, the next major version of its popular Mac OS X Web browser. OmniWeb 4.5 beta is the first widely available version of OmniWeb to incorporate the open source WebCore and JavaScriptCore frameworks from Apple, bringing greatly improved support for the latest Internet standards like CSS, HTML, XHTML, and JavaScript. Version 4.5 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 beta 1 requires Mac OS X 10.2 or later.