UptimeRobot is one of the world's leading website monitoring services, trusted by over 2 million users and companies globally to monitor more than 7.5 million websites and services. The platform offers comprehensive monitoring capabilities including website uptime, response time, SSL certificates, and server availability through multiple monitoring types: HTTP, keyword, ping, port, and heartbeat monitoring. UptimeRobot checks your websites as frequently as every 30 seconds (on paid plans) from multiple global locations to ensure accurate detection and prevent false positives. When downtime is detected, the service sends instant notifications through various channels including email, SMS, voice calls, and integrations with popular platforms like Slack, Discord, Microsoft Teams, and PagerDuty. The platform features customizable status pages that can be branded with your logo and colors, allowing you to communicate service status to customers transparently. UptimeRobot's generous free plan includes 50 monitors with 5-minute intervals, making it accessible for small businesses and personal projects. The service also offers advanced features like maintenance windows, detailed reporting, mobile apps for on-the-go monitoring, and API access for integration with other tools. With its user-friendly interface, reliable performance, and comprehensive feature set, UptimeRobot has established itself as a cost-effective solution for businesses of all sizes.