UptimeRobot
Freemium
UptimeRobot is a free website uptime monitoring service.
Huginn
Open Source
Huginn is a system for building agents that perform automated tasks for you online.
Distill Web Monitor
Freemium
Distill runs in your browser to check monitored pages for changes. Get instant alerts as soon as a change is detected.
ChangeMon.Com
Free
ChangeMon.Com is an online website change monitor service.
Google Alerts
Free
Google Alerts is a content change detection and notification service.
Update Scanner
Open Source
Update Scanner is a Firefox addon to monitor web pages for updates. Useful for websites that don't provide Atom or RSS feeds.
Wachete
Freemium
Wachete is a website content monitoring platform.
Compare WebSite-Watcher with alternatives
Compare UptimeRobot and WebSite-Watcher and decide which is most suitable for you.
Compare Google Alerts and WebSite-Watcher and decide which is most suitable for you.
Compare Huginn and WebSite-Watcher and decide which is most suitable for you.
Compare Update Scanner and WebSite-Watcher and decide which is most suitable for you.
Compare Distill Web Monitor and WebSite-Watcher and decide which is most suitable for you.
Compare Wachete and WebSite-Watcher and decide which is most suitable for you.
Compare ChangeMon.Com and WebSite-Watcher and decide which is most suitable for you.