XB is a Chrome add-on developed by sh01.bid that aims to block all ads and provide an efficient browsing experience. It is a wide-spectrum content blocker that prioritizes CPU and memory efficiency.

Out of the box, XB comes with pre-loaded and enforced filter lists, including uBlock Origin, EasyList, EasyPrivacy, Peter Lowe's Ad server list, and the Online Malicious URL Blocklist. These lists effectively block ads and tracking elements from websites.

For users who want additional protection, XB offers the option to select from more filter lists, such as Fanboy's Enhanced Tracking List, Dan Pollock's hosts file, MVPS HOSTS, Spam404, and many others.

XB also provides advanced features like the ability to block JavaScript locally or globally with a simple point-and-click interface. Users can create their own global or local rules to override entries from filter lists, giving them more control over their browsing experience.

XB is a free and open-source add-on, licensed under the GPLv3. It is developed by users for users, ensuring that it meets the needs of the community.