Free DevOps & SRE Tools
Check service health, test SSL security, look up DNS records, calculate SLA, and more — all free, no signup required.
SSL Security Test
Deep SSL/TLS audit with A+ grading, cipher analysis, vulnerability testing, and security header checks.
Status Checker
Check if any website or cloud service is up or down right now with real-time status detection.
DNS Lookup
Look up A, AAAA, MX, NS, TXT, CNAME, and SOA records for any domain instantly.
WHOIS Lookup
Look up domain registration, registrar, creation date, expiry, and nameserver information.
Response Time
Measure HTTP response time, TTFB, DNS resolution, and TLS handshake for any URL.
SLA Calculator
Convert SLA uptime percentages to allowed downtime per day, week, month, and year.
Downtime Calculator
Calculate the financial cost of downtime based on your revenue, team size, and SLA penalties.
Outage Map
Live internet outage map showing real-time disruptions and service degradations worldwide.
Embeddable Widgets
Status badges and embeddable widgets to show real-time service health on your own site.
Built for DevOps, SRE, and Security Teams
These tools are built by the team behind ServiceAlert.ai — a platform that monitors 2,300+ cloud services and alerts teams when things break. Every tool is free to use with no account required.
Need continuous monitoring instead of one-off checks? See our plans for automated uptime monitoring, SSL certificate tracking, brand protection, and real-time alerting across email, Slack, Teams, Discord, and webhooks.