Monastery is a subscription-based security and privacy add-on for Firefox designed to help users manage their time spent on distracting websites. Similar to StayFocusd for Chrome, it allows users to create a blacklist of sites and set a daily limit on how long they can browse these pages. Once the allotted time is used up, access to the blacklisted sites is blocked until the next day, ensuring that users can focus on their tasks without succumbing to procrastination.

The program features a countdown timer for each blacklisted site, and users can customize the time allocation per site. Additionally, notifications can alert users as they approach their time limits. A new delay feature adds a waiting period before blacklisted pages load, promoting mindful browsing habits. Overall, Monastery is a practical tool for Firefox users looking to enhance their productivity by managing their online distractions.