Stop missing downtime
and react immediately.
Free uptime monitoring tool with instant website downtime alerts for your websites and APIs.
Start For Free To Monitor Your Website NowAlertsDown provides 24/7 automated monitoring for your websites, APIs, and web services. Get notified via email, SMS, or webhook the moment your site goes down. Our SSL certificate expiration monitoring ensures your sites remain secure, while our API monitoring service tracks performance with detailed analytics.
Key Features
Simple Setup
Add your endpoints in seconds—no code required.
Real-Time Monitoring
24/7 automated checks for your APIs, websites, and services.
Alerts
Get notified via email, SMS, or a simple Webhook when downtime is detected.
SSL certificate monitoring
Monitor SSL certificates for expiration and ensure your sites remain secure.
Trusted by Growing Businesses
Real-time HTTP Monitoring
Track your website's uptime, response times, and performance with detailed analytics and instant notifications.
- ✓ Automated health checks every minute
- ✓ Response time tracking
- ✓ Instant downtime alerts
- ✓ Historical performance data
