# Website Monitoring ## Website Monitor * [Visualping: #1 Website change detection, monitoring and alerts](https://visualping.io/) * [urlwatch monitors webpages for you (thp.io)](https://thp.io/2008/urlwatch/) * [ChangeTower: Monitor Website Changes, Get Alerts, Archive Website History](https://changetower.com/) * [dgtlmoon/changedetection.io: changedetection.io - The best and simplest self-hosted open source website change detection monitoring and notification service. An alternative to Visualping, Watchtower etc. Designed for simplicity - the main goal is to simply monitor which websites had a text change. Open source web page change detection - Now also includes JSON API change detection and monitoring support!](https://github.com/dgtlmoon/changedetection.io) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://irosyadi.gitbook.io/irosyadi/hacking/website-monitoring.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.