Browser

A Class Browser is a software tool in an object-oriented language that lets you scroll through and edit a hierarchical tree of objects. A Refactoring Browser makes it easier to move routines by ensuring that all linkages are maintained properly. The Smalltalk language pioneered the class browser and has been known for its advanced browsing capabilities.

An Object Browser is a tool that allows a user to examine the components involved in a software package, such as Microsoft Word or software development packages. An object browser will usually display the hierarchy of components; the properties and events associated with the objects; and other pertinent information; it also provides an interface for interacting with objects. This hierarchy of components and its properties could be described with a path (XPath) for identifying a component within the hierarchy.

A Web Browser is application software for accessing websites. When a user requests a web page from a particular website, the browser retrieves its files from a web server and then displays the page on the user's screen.

Web browsers are used on a range of devices, including desktops, laptops, tablets, and smartphones. The most used browser is Google Chrome, with a 65% global market share on all devices, followed by Safari with 18%. A web browser is not the same thing as a search engine, though the two are often confused. A search engine is a website that provides links to other websites. However, to connect to a website's server and display its web pages, a user must have a web browser installed. In some technical contexts, browsers are referred to as user agents.