The browser is a software (computer program) through which you can view web pages and HTML documents, interact with them and surf the internet. Allows users to access the Internet, especially the World Wide Web (WWW), to display information in hypertext, images and websites.
The software includes almost always a URL address bar and navigation buttons that allow the user to return to the previous page (Back) or the home page (Home).
How does a browser
The browser interprets the information through the protocol HTML or XHTML. All browsers are supported language HTML (HyperText Markup Language) by which they are organized information that would normally give rise to a website.
In addition to HTML browsers are able to interpret other computer languages, such as CSS (Cascading Style Sheets) that allows developers to easily separate sites site layout from content.
Other standard languages that a browser can interpret only the XHTML (Extensible Hypertext Markup Language) and the RSS (Really Simple Syndication).
The browser used on the web
Currently, there are many types of browsers, some other free license. The most popular browsers are as follows:
All browsers are able to display a web page and use navigation interface similar. The differences between a browser and the other is mainly related to special functions and their ability to understand languages other than HTML.
The history of the browser
The first browser to learn about a spread on a global scale is Mosaic in the 90s. It is then replaced with Netscape Navigator , a free browser that is spread mostly in universities and start to use it the first private users.
The success of the web drives many giants of the software to develop the browser business. In the nineties the Microsoft produces the browsers Internet Explorer (IE) and includes it by default in the Windows operating system. In a few years, the browser IE spreads until reaching a percentage of usage above 90%.
Over the years two thousand Netscape becomes obsolete and falls into disuse. Born but other browsers (eg. Opera, Safari, Firefox, Chrome) that conquer important shares of diffusion in the field of browser and erode significantly the percentage of use of IE.
In particular, an open-source project of the Mozilla Foundation, the browser Firefox , is able to achieve in a few years 40% of users.
At the end of the first decade of the new millennium the leadership of the IE browser is further undermined by the spread of mobile devices accessing the Internet (smartphone, tablet, etc.) Using the operating systems Android and iOS (Apple) and supplement, respectively, the browser Google Chrome and Safari .
In this time entering a period of decline also the open source browser Firefox. Google Chrome becomes the main browser on the web and mobile devices.