PageMon.Net!

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.

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.

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

This service transmits your favorite social networks by RSS. It supports VKontakte, Facebook, Twitter, Instagram, Youtube, Tumblr, Ok.ru, Google+, DeviantArt, Periscope, ArtStation, Mixcloud, GIPHY etc.

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.

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

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.

Track web page changes in any web page daily for free users, every 30 mins for paid users - no RSS or Atom required. Receive notifications via Email, Notifo, Instant Message and SMS.

Uptime monitor for server. Currently fully free (beta) so it is subjected to change. Allows to monitor unlimited servers and websites. With custom CNAME you can create live status pages.

Follow That Page sends you an email when your favorite web pages have changed. The free version can perform 20 daily checks and 1 hourly check. You can enter any number of pages you like, but after checking 20 pages (in the daily run) it will stop and leave the rest for the next day.

Versionista was designed for the rough-and-tumble world of today's Web, where subtle edits can offer actionable tactical advantage. It lets you monitor entire Web sites and receive e-mail alerts when changes that meet your filters are met. It tracks and archives any entity's total online presence, including social media, blogs, and other Web sites. It lets you follow the evolution of any site, and know when important changes occur — even to deeply nested pages.

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

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