A browser is a software application that allows users to access and navigate the internet. It interprets and displays web pages, enabling users to view text, images, and videos. Popular browsers include Google Chrome, Mozilla Firefox, and Microsoft Edge. They provide features like bookmarks, tabs, and extensions to enhance the browsing experience. Browsers work by sending requests to web servers, which then deliver the requested content. They use protocols like HTTP and HTTPS to ensure secure communication. Browsers also support various web technologies, such as HTML, CSS, and JavaScript, which help create interactive and visually appealing websites.