The ability to monitor domains or IP addresses

For Domains: HTTP/HTTPS monitoring, DNS Monitoring, and SSL Certificate monitoring

For IP Addresses: Ping / ICMP Echo Monitoring

Notification settings per-host

Host Groups to organize your hosts

Check Frequency settings - As fast as once per minute, as slow as once per hour

Automatic temporary escalation to 60 second host checks when an outage is detected

Teams Support w/ notifications settings per team member

SMS & WhatsApp notification Support

Branded public status pages per organization

Advanced service monitoring - IMAP, POP3, SMTP, MySQL, PostgreSQL, etc..