Free Monitoring Tools
Developer tools for uptime monitoring, security analysis, and infrastructure debugging. No signup required.
SLA
Uptime Calculator
Calculate exactly how much downtime your SLA allows. Convert uptime percentages to minutes per day, hours per month, and days per year.
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Security
HTTP Header Checker
Analyze HTTP response headers, security configuration, redirect chains, and server behavior for any URL.
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HTTPS
SSL Certificate Checker
Verify SSL/TLS certificate validity, expiry date, issuer, and protocol. Catch expiring certificates before they cause outages.
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Go Beyond One-Time Checks
These tools give you a snapshot. PulseAPI gives you continuous monitoring — checking your endpoints every 10 seconds, alerting on downtime, SSL expiry, and slow responses. Free to start.