The type of software designed to block unwanted advertising on the internet is known as ad-blocking software. This software functions by intercepting and preventing advertisements from being displayed on web pages, improving the user experience. Ad blockers can enhance browsing speeds, reduce page loading times, and protect users from intrusive or potentially harmful advertisements. Many ad blockers allow users to customize their filtering preferences, promoting an ad-free online environment. However, it's important to note that some websites rely on ad revenue for funding, leading to ongoing debates about the ethical implications of ad-blocking technology.