Web browser based on Web Kit. Shiira is a web browser written in Cocoa. It uses the KHTML rendering engine provided by Apple's Web Kit. Since this is the same rendering engine used by Safari, HTML content rendered by Shiira will look the same as in Apple's own browser. All source code is publicly available under the BSD license. We hope that our code will help other developers just starting out on their own Web Kit projects.The first Shiira milestone is to implement the features used in everyday web browsing. The following has been implemented in the current version: Tabbed windows Bookmark management Sharing bookmarks with Safari Side drawer showing bookmarks and history Bookmarks toolbar Search field with choice of search engine Customizing toolbar Cache control panel Window appearance switching (Aqua and Metal) Toolbar icons switching Removing Cookie and cache at the termination Displaying favicon list Enable/disable favicon with bookmark Help document (Japanese only) Multiple source windows per one browser window Displaying HTTP header in source window Wheel button operation (open in new tab, and tab switching) Auto-tab for bookmark folder Displaying back-forward list on toolbar buttons Search text field for bookmark and history