Distill Web Monitor is a Firefox extension that allows users to monitor changes on webpages and feeds effectively. This subscription-based tool is particularly useful for those who want to keep track of specific content updates, as it delivers instant alerts via SMS and email when changes occur. Key features include easy content selection from any webpage and highlighted changes, ensuring users can quickly identify what has been updated. Additionally, it maintains a comprehensive change history for future reference.

The application supports various notification methods such as sound alerts, pop-ups, and mobile push notifications. Users can manage multiple monitors through an inbox-style Watchlist, and the advanced content selection options via Xpath, CSS, or Javascript enhance its functionality. For users on a premium plan, syncing the Watchlist across devices adds convenience, making it easier to stay updated on monitored content from anywhere.