WebMon is described as 'freeware web page update monitoring program - it saves you time and keeps you updated by automatically checking web pages to see if they have changed'. There are more than 25 alternatives to WebMon for a variety of platforms, including Online / Web-based, Windows, Linux, Mac and Firefox. The best alternative is Huginn, which is both free and Open Source. Other great apps like WebMon are UptimeRobot (Freemium), Distill Web Monitor (Freemium), Update Scanner (Free, Open Source) and FiveFilters Feed Creator (Freemium).
Huginn is a system for building agents that perform automated tasks for you online. They can read the web, watch for events, and take actions on your behalf. Huginn's Agents create and consume events, propagating them along a directed graph.
Dashboard with 50 Monitors, Checked Every 5 Minutes, Totally Free. Monitor HTTP(S), Ping, Port and check Keywords. Get alerted via e-mail, SMS, Twitter, web-hooks or push. View uptime, downtime and response times.
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. Featured highlights: • Content selection from any webpage including iframes.
Monitor webpages: Get Newsfeeds from web pages that do not deliver RSS Customization: Monitor portions of webpages via CSS selectors / ignore Ads and Social Media Elements Handling: Manage your monitorings. Get them via RSS or e-Mail