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 ## Monitoring
 
+  * [OnlineOrNot.com](https://onlineornot.com/) - 10 uptime monitors with a 5 minute interval, 10 page speed monitors with a 12 hour interval. Free alerts via Slack and Email.
   * [Pingmeter.com](https://pingmeter.com/) - 5 uptime monitors with 10 minutes interval. monitor SSH, HTTP, HTTPS, and any custom TCP ports.
   * [amixr.io](https://amixr.io/) - Developer-friendly alerting and on-call management with brilliant Slack Integration, API and Terraform. Free phone call, SMS, Telegram, Slack and E-Mail packages.
   * [appdynamics.com](https://www.appdynamics.com/) — Free for 24 hours metrics, application performance management agents limited to one Java, one .NET, one PHP and one Node.js