Distill Web Monitor!

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

WebSite-Watcher detects website updates and highlights all changes in the text. WebSite-Watcher monitors web pages, password protected pages, discussion forums and much more.

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.

Monitor webpages: Get Newsfeeds from web pages that do not deliver RSSCustomization: Monitor portions of webpages via CSS selectors / ignore Ads and Social Media ElementsHandling: Manage your monitorings. Get them via RSS or e-Mail

Web Alert enables you to monitor any website for changes (even when a login, a form post or password prompt is necessary to access the site). You can get notified when a price changes, a new article is published, you receive exam results or an answer in a forum, a registration period has opened, etc. You can also check if your own website is currently online and working correctly (UI testing and web monitoring).

Web page and json monitor, is an extension for the most modern browsers, It is used to monitor any Web page, such as a price at Amazon; A search on Google or more commonly where an RSS feed service is not guaranteed

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

WatchThatPage is a free service to monitor web pages and extract new information from them. Changes are sent in a daily email.

The easiest way to create an RSS feed from a web page. You do not need any skill. Just input the address of a page, choose a suitable version from proposed and you will get a feed.

SiteDelta is an Add-on for Mozilla Firefox 4 or higher.

RSS Widget - RSS to HTML - Display RSS for Free with Web RSS