Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting

Visualping - Visualping is the easiest to use website checker, webpage change monitoring, website change detector and website change alert software of the web. Read more about Visualping.

UptimeRobot App - Web, SSL, ports & Cron-jobs monitoring

Distill Web Monitor - 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.

Cronitor - Monitor cron jobs, micro-services, daemons and almost anything else, no setup required. Easier cron troubleshooting and no more silent failures.

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