UptimeRobot is a monitoring tool that offers up to 50 monitors with 5-minute interval checks at no cost. The tool allows you to establish various types of monitors including HTTPS, ping, port, keyword, and background job monitors. Notifications from UptimeRobot can be received through a variety of channels. These include e-mail, SMS, phone calls, and push notifications. In addition, it integrates with various third-party apps such as PagerDuty, Slack, Twitter, Microsoft Teams, Zapier, Splunk On-Call, Telegram, Webhooks, Pushbullet, Pushover, and Google Chat. There is also a mobile app available for iOS and Android devices for real-time monitoring on the go. UptimeRobot also offers the capability to generate a custom status page to display your system's uptime. This feature allows you to add announcements or send them via email to your subscribers. For users seeking more advanced features, the Pro Plan provides SSL expiration monitoring and advanced notification settings.