Uptime Tracker checks your websites, APIs, servers and cron jobs around the clock and pages you only when a failure is confirmed, so one network blip never wakes you up. Monitor HTTP, keywords, SSL, TCP, DNS, ping, domain expiry, heartbeats and multi-step APIs. Alerts reach SMS, Slack, Teams, Discord, Telegram, PagerDuty and more, with on-call and hosted status pages on your own domain. Free plan with commercial use; Pro is $9/mo with seats included.