Final answer:
Chrome, Explorer, and Firefox are web browsers used to access the internet. The U.S. Department of Justice once prosecuted Microsoft for including Internet Explorer as the default browser, which was seen as unfair competition. Browsers and default settings play critical roles in market dynamics as shown through legal proceedings.
Step-by-step explanation:
The examples given in the question, Chrome, Explorer, and Firefox, are all web browsers.
A web browser is a software application used to access and view websites on the internet. It allows users to navigate through web pages, interact with content, and perform various tasks online.
Chrome, Explorer (referring to Internet Explorer), and Firefox are all popular web browsers used by millions of people around the world. They provide different features and functionalities to enhance the browsing experience.