Keep your websites, APIs, and servers online with powerful uptime monitoring. Get instant alerts when something goes wrong.
No credit card required • 5 free monitors • 1-minute checks available
Everything you need to keep your services online
Monitor HTTP/HTTPS, Ping, custom ports, and keyword presence on your websites.
Get notified immediately when your services go down via multiple channels.
Track uptime, response times, and incidents with comprehensive reporting.
Reduce alert noise with intelligent parent-child monitor relationships
Define dependencies between monitors to prevent alert storms. When a parent monitor (like a router or host) goes down, automatically suppress notifications for all dependent child monitors (services, APIs, websites).
Get one notification for the root cause, not dozens for every affected service
See your infrastructure hierarchy at a glance with an interactive tree view
Toggle notification suppression per dependency as needed
192.168.1.1 - Main office router
Result: You receive 1 alert about the router being down, instead of 4 separate alerts. Once the router is back up, all services automatically resume normal monitoring.
Link routers, switches, and firewalls as parents to servers and services behind them
Connect physical or virtual hosts to the applications and services they run
Link cloud providers or regions to dependent microservices and APIs
Get started in minutes
Create your free account and get 5 monitors instantly
Add your websites, APIs, or servers to monitor
Receive instant alerts when issues are detected
Get notified instantly through your preferred channels when incidents occur
Instant email notifications with detailed incident information
Send alerts directly to your team's Slack channels
Integrate with any system using HTTP webhooks
Critical alerts direct to your mobile
Get instant SMS alerts for critical incidents, even when you're away from your computer. Perfect for on-call engineers and mission-critical systems.
Fast Response: Click the link in the SMS to instantly view full incident details, response times, and take action from your mobile device.
SMS notifications are pay-per-use at $0.10 per message. Add funds to your account to enable SMS alerts.
Our intelligent notification system prevents alert fatigue by using quorum verification from multiple monitoring nodes. Only genuine incidents trigger alerts, reducing false positives.
Set up notifications exactly how you want them. Configure alert delays, escalation rules, and quiet hours to ensure you're notified at the right time, every time.
Monitor from multiple locations with intelligent quorum verification
Monitor from US East Coast
Asia-Pacific coverage
Oceania region monitoring
Smart Quorum System: Prevents false alerts by requiring confirmation from multiple nodes
Start free, upgrade as you grow
Credit-based billing
Join thousands of users who trust SystemOK to keep their services online
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