For Monitoring Websites for Changes
About this Collection
Goes beyond RSS (see also For RSS collection specific to RSS)
4 Add-ons in this Collection
Check4Change (aka C4C) is a simple extension that allows you to select a part of a web-page, and get notified when it changes.
Monitor web page and feed for changes. Get SMS and email alerts when change is detected.
Monitors web pages for updates. Useful for websites that don't provide Atom or RSS feeds.