External Host Gatekeeper is a free Chrome extension designed to enhance browsing security by monitoring third-party hosts that load alongside the websites you visit. This tool empowers users to take control of their online experience by allowing them to decide whether to allow, review later, or block each third-party host. Its user-friendly interface makes it easy to navigate the various options available, ensuring a tailored browsing experience.

One of the standout features of External Host Gatekeeper is its ability to remember decisions made for each primary domain. This is enforced using declarativeNetRequest rules, ensuring that once a host is blocked, it remains blocked on future visits. This functionality not only streamlines the browsing process but also enhances overall security, making it a valuable addition for anyone looking to maintain a safer online environment.