However, this behavior is inconsistent between various browsers and browser versions. Apple's Safari browser was one of the first major web browsers to include this feature. A browser war is competition for dominance in the usage share of web browsers. Subscribers also get access to encrypted proxy extensions for Chrome and Firefox browsers. Mozilla Firefox, IE, Opera, and many other web browsers all show the URL. They are associated with web browsers and apps. Information about what JavaScript technologies the browsers support. All major desktop browsers are supported except for Internet Explorer. Each web server runs HTTP server software, which responds to requests from web browsers. Incognito mode is similar to the private browsing feature in other web browsers. This does not include some versions of Opera and many mobile web browsers. Private browsing is a privacy feature in some web browsers. Host names are used by applications such as telnet, ftp, web browsers, etc. The move increases consistency of web platform compatibility between major browsers. The tests can then run against most modern web browsers.