Watchtower is a browser extension developed by Effective Experiments, available on Chrome. This free tool falls under the Browsers category, specifically in Add-ons & Tools. The program, "Watchtower: Track A/B tests on your website in real-time," enables users to monitor live experiments on their websites in real-time. With Watchtower, users can effortlessly view all ongoing experiments on their website, access detailed overviews, and navigate directly from their browser. This top-tier tool is widely utilized by experimentation teams to streamline the sharing of experiments within their organizations.

Setting up configurations within the Effective Experiments app allows users to share access codes with their teams, enabling them to track all ongoing experiments. Moreover, users can monitor the engagement levels of external teams, identifying who is actively using the extension to track and visit experiments.