The Google Chrome Web browser is based on the open source Chromium project. Google released Chrome in 2008 and issues several updates a year. It is available for Windows, Mac OS X, Linux, Android and iOS operating systems. The Google Chrome browser takes a sandboxing-based approach to Web security. Each open website runs as its own process, which helps prevent malicious code on one page from affecting others (or the computer operating system at large). The browser also supports Web standards such as HTML5 and cascading style sheets (CSS).
Google based the look of Chrome OS, its operating system for Web-based applications, on the Chrome Web browser. Chrome was the first major Web browser to combine the search box and the address bar, a feature that most competitors have since adopted. It also allows users to sign in with their Google accounts, which enables them to sync bookmarks and open Web pages across multiple devices. In 2010, Google launched the Chrome Web Store, an online marketplace where users can buy and install Web-based applications to run inside the browser. These apps are available as either browser extensions or links to websites.