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WebKit
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<p>WebKit is a <a href="/facts/Browser_engine/wLna3ate">browser engine</a> primarily used in <a href="/facts/Apple_Inc./oTJYta3k">Apple's</a> <a href="/facts/Safari_(web_browser)/9R8v7tNl">Safari</a> <a href="/facts/Web_browser/2pfyymLs">web browser</a>, as well as all web browsers on <a href="/facts/IOS/mK5cggH5">iOS</a> and <a href="/facts/IPadOS/fClrmH7D">iPadOS</a>. WebKit is also used by the <a href="/facts/PlayStation/09r71TxV">PlayStation</a> consoles starting with the PS3, the <a href="/facts/Tizen/gNrC0mnG">Tizen</a> mobile operating systems, the <a href="/facts/Amazon_Kindle/cmCbmvEs">Amazon Kindle</a> <a href="/facts/E-book/yrBWpU8E">e-book</a> reader, <a href="/facts/Nintendo_video_game_consoles/LEBu1pfl">Nintendo consoles</a> starting with the <a href="/facts/Internet_Browser_(Nintendo_3DS)/AInDM4t7">3DS Internet Browser</a>, <a href="/facts/GNOME_Web/0hIb10Th">GNOME Web</a>, and the discontinued <a href="/facts/BlackBerry_Browser/k9LGPyg5">BlackBerry Browser</a>. </p><p>WebKit started as a <a href="/facts/Fork_(software_development)/D6khxhpr">fork</a> of the <a href="/facts/KHTML/o8uwkSAd">KHTML</a> and <a href="/facts/KJS_(software)/PBSWxhEg">KJS</a> libraries from <a href="/facts/KDE/PCh32IWA">KDE</a>, and has since been further developed by <a href="/facts/KDE/PCh32IWA">KDE</a> contributors, <a href="/facts/Apple_Inc./oTJYta3k">Apple</a>, <a href="/facts/Google/GT9Sugza">Google</a>, <a href="/facts/Nokia/bCleFoF4">Nokia</a>, <a href="/facts/Bitstream_Inc./Hz0atkNn">Bitstream</a>, <a href="/facts/BlackBerry_Limited/FNPvPAGe">BlackBerry</a>, <a href="/facts/Sony/7x4tCtBd">Sony</a>, <a href="/facts/Igalia/4oD96h9T">Igalia</a>, and others. WebKit supports <a href="/facts/MacOS/Y93vVpTm">macOS</a>, <a href="/facts/Microsoft_Windows/bwhAhuSL">Windows</a>, <a href="/facts/Linux/9FvCKSTq">Linux</a>, and various other <a href="/facts/Unix-like/YAKrAxzd">Unix-like</a> <a href="/facts/Operating_system/8XTuvMh2">operating systems</a>. On April 3, 2013, Google announced that it had forked WebCore, a component of WebKit, to be used in future versions of <a href="/facts/Google_Chrome/4INfWq37">Google Chrome</a> and the <a href="/facts/Opera_(web_browser)/2NYCcTj1">Opera web browser</a>, under the name <a href="/facts/Blink_(browser_engine)/uL9vhKbv">Blink</a>. </p><p>Its <a href="/facts/JavaScript/XhhIIEsl">JavaScript</a> engine, JavascriptCore, also powers the <a href="/facts/Bun_(software)/StggJde8">Bun</a> server-side JS runtime, as opposed to <a href="/facts/V8_(JavaScript_engine)/0Fd3taMh">V8</a> used by <a href="/facts/Node.js/FKzhV4Qa">Node.js</a>, <a href="/facts/Deno_(software)/m1xyHIPE">Deno</a>, and <a href="/facts/Blink_(engine)/uL9vhKbv">Blink</a>. WebKit's <a href="/facts/C%252B%252B/Et0F2qn9">C++</a> <a href="/facts/Application_programming_interface/GMlN4vUr">application programming interface</a> (API) provides a set of <a href="/facts/Class_(computer_programming)/zvzkSAtE">classes</a> to display <a href="/facts/World_Wide_Web/wvnTrWFq">Web</a> content in <a href="/facts/Window_(computing)/g39X0vV3">windows</a>, and implements browser features such as following links when clicked by the user, managing a back-forward list, and managing a history of pages recently visited. </p><p>WebKit is <a href="/facts/Open_source/7X9rCdz4">open source</a> and available under the <a href="/facts/BSD_licenses/XLtmLp5x">BSD 2-Clause</a> license with the exception of the WebCore and JavaScriptCore components, which are available under the <a href="/facts/GNU_Lesser_General_Public_License/AXwkz9x3">GNU Lesser General Public License</a>. As of March 7, 2013, WebKit is a trademark of Apple, registered with the U.S. Patent and Trademark Office. </p>