Every check, one dashboard.
From a 30-second HTTP check to a full Lighthouse audit, every monitor type lives here. Open source, self-hostable, one place to look.
Availability.
Uptime monitoring
HTTP checks as often as every 30 seconds on Pro, from six regions, with status code, latency, and error stored for every result.
Learn morePing monitoring
Reachability checks for servers, routers, and anything with an IP address, no web server required.
Learn moreTCP port monitoring
Watch the ports your app depends on: databases, Redis, SMTP, and anything else that should be listening.
Learn moreCron & heartbeat monitoring
Your jobs ping us when they finish; when the ping stops arriving inside the grace period, an incident opens.
Learn moreHealth checks
Call the health route your app already exposes and alert the moment any component it reports flips to unhealthy.
Learn moreServer metrics
An optional agent reports CPU, memory, and disk from inside the box, with alerts on the thresholds you set.
Learn moreWebsite quality.
SSL certificates
Expiry warnings land weeks ahead, and chain or validity problems are caught before a browser warning does it for you.
Learn moreDNS monitoring
Detect unexpected changes to your DNS records before they turn into an outage, or worse, a hijack.
Learn moreDomain expiry
Registration expiry tracked for every domain you own, with warnings long before renewal day.
Learn moreBroken links, mixed content & sitemap
Crawl your site for dead links, mixed-content warnings, and sitemap problems that quietly erode trust and rankings.
Learn moreLighthouse audits
Scheduled Lighthouse runs track performance, accessibility, SEO, and best-practice scores over time.
Learn morePerformance monitoring
Every check records response time, and p95 regressions against a 7-day baseline raise an alert before users complain.
Learn moreSecurity & reputation.
Exposed-port scanning
Scan your hosts for ports that should not face the internet, and hear about it when a new one appears.
Learn moreDNS blocklist monitoring
Your IPs and domains checked against spam blocklists, so deliverability problems surface before your users notice.
Learn moreAI checks
Write an assertion in plain language and an AI-evaluated check verifies your page or API response against it on schedule.
Learn moreCommunication.
Status pages
A branded status page on your own domain, with real uptime history, subscriber emails, and an incident feed.
Learn moreNotifications
Ten channels, including email, Slack, PagerDuty, Opsgenie, and SMS, routed per monitor to whoever should wake up.
Learn moreIncidents & maintenance
Failures open timeline incidents automatically, and maintenance windows keep planned work off your outage record.
Learn moreOpen source, no asterisks.
Every one of these ships in the MIT-licensed self-hosted version. No enterprise edition, no feature gates behind a sales call. The hosted plan exists for teams who would rather not run it themselves.
Start monitoring in under 2 minutes.
No credit card required for the self-hosted, open-source version.