URLert.com is described as 'Monitor website pages for changes in keywords'. There are more than 10 alternatives to URLert.com, not only websites but also apps for a variety of platforms, including SaaS, Twitter, Mac and Windows. The best alternative is Pingdom. It's not free, so if you're looking for a free alternative, you could try Pingbreak or Curler by Amixr.IO. Other great sites and apps similar to URLert.com are Up Ninja (Paid), Silent Down (Paid), Netthrob (Paid) and RapidSpike (Paid).
Pingdom web site monitoring and other infrastructure for you and instantly let you know when anything goes wrong. Measure uptime, downtime, and the performance of your website as experienced by visitors.
Pingbreak is an original and free monitoring service. Get notified through Twitter if your website is down. Pingbreak checks all of your websites each minute and alert you instantly by Direct Message (DM).
Monitor uptime,response timeandapdex indexes of your website or api for free and receive instant updates through e-mail or Slack with real time announcements. Don't leave your customers in the dark during downtime & outages of your website.
RapidSpike is a Digital Experience Monitoring Platform that interacts with your online platforms exactly as your customers do. It collects data across your digital ecosystem to help you improve a fast, reliable digital customer experience.
Unlimited monitors checked from multiple location every minute. Monitor any port or setup a "heartbeat" that works well for cron jobs or any service behind a firewall. Be alerted as soon as your service is offline via email or app integration.