The name of the first widely-used web browser is Mosaic, released in 1993. It played a pivotal role in popularizing the World Wide Web by introducing a user-friendly graphical interface, making it accessible to a broader audience. Mosaic supported both text and images, greatly enhancing the browsing experience. The effectiveness of this browser laid the groundwork for future browsers like Netscape Navigator and Internet Explorer, influencing the development of web technologies and standards.