WebSite-Watcher!

Monitors your websites every 5 minutes, totally free. Get alerts by e-mail, SMS, Twitter or RSS. Add up to 50 websites. Monitors can be refreshed for an instant check with a click. Supports https and authentication with user/password.

Google Alerts will send you email or RSS updates of the latest relevant Google results (web, news, etc.) based on any topic or search term of your choice.

Distill is a web monitoring tool. It can monitor RSS feeds, a webpage or a part of webpage. Alerts in the form of pop-up, audio or emails can be received.

ChangeDetection.com provides page change monitoring and notification services to Internet users worldwide. Anyone can use our service to monitor any website page for changes.

Update Scanner is a Firefox extension to monitor web pages for updates. Useful for websites that dont provide Atom or RSS feeds.

ChangeMon.Com lets you monitor any HTML page or RSS feed for changes. You can choose to be notified when a word/phrase is either added or removed from a web page, or you can choose to monitor only a specific part of a web page by visually selecting a target element. This service is completely free and doesn't require you to sign up for an account.

Track web page changes and get notified. Free Sign-up. Have all data in one place

Create feed from elements (e.g. links) extracted from a given web page

Web Research is a Windows program that helps you save important information from the Web, store it on your computer, and then organize and reuse it in your projects.

Stays in the background and monitors web pages for changes.This extension allows your browser to monitor changes to web pages for you. It can inform you whenever a particular page changes without you having to go and check every time.

PageMon.net: we're watching!

Visualping is the easiest to use website change monitoring, website change detector and website change alert software of the web. Contrary to other website change monitoring software like ChangeDetector, Versionista, Page Monitor, it tracks and detect visual webpage changes and send alerts via email or Slack team notification.

Trackly monitors web pages and tells you when they change. Beautifully!