Uptime.com website monitoring solutions provide unmatched visibility and availability, empowering engineering, operations and SRE teams to monitor & respond to their most essential services. Simple & intuitive industry leading Enterprise-grade features delivered at a fair price, that are continuously improving.
G2, Sourceforge and TechRadar Pro have recognized us as one of the world’s best uptime monitors for several consecutive years, including this one. Try 100% free.
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The ultimate uptime monitoring service. Get 50 monitors with 5-minute checks completely free. Set up in seconds and stay informed about your website’s health at all times.
Website monitoring: Get instant alerts when your website goes down. Reliable and accurate monitoring helps you fix issues before they affect users and prevent revenue loss.
SSL certificate monitoring: Avoid losing visitors due to expired SSL certificates. Get notified 30 days before expiration so you can renew in time.
Ping and port monitoring: Check if your server is online or if your email service is running on port 465. Monitor any port you need with real-time alerts.
Cron job monitoring: Track scheduled tasks with heartbeat monitoring. We verify if the request arrives on time, making sure server-side jobs and internet-connected devices are running properly.
Status pages: Create up to 100 branded status pages, protect them with a password, and allow subscribers to receive updates.
Stay informed with email, SMS, voice calls, push notifications, or integrations with Slack, Zapier, PagerDuty, Telegram, Discord, Microsoft Teams, Google Chat, and more.
Maintenance windows: Pause monitoring when you schedule downtime to avoid unnecessary alerts
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UptimeMonk
Know when a customer-facing service, API, or background job fails, then get the evidence needed to respond. UptimeMonk combines website uptime monitoring, API monitoring, network checks, certificate tracking, cron monitoring, and incident investigation in one workspace. Teams can check HTTP and HTTPS endpoints, rendered public web pages, SSL/TLS certificates, domain registrations, DNS records, TCP ports, ICMP reachability, and secure heartbeat URLs for scheduled jobs.
Checks run from multiple regions and can use a second location to confirm a failure before creating an incident. Each incident brings together probable-cause guidance, regional observations, latency, an evidence timeline, alert history, and recovery details. Service dependency mapping shows which monitored systems rely on others. Critical paths, cross-monitor incident correlation, and evidence-linked impact summaries help responders understand whether an upstream outage may be affecting downstream services without presenting correlation as proven causation.
Signed GitHub and GitLab deployment webhooks place relevant release events beside incidents without giving UptimeMonk access to source code. Teams can publish branded status pages with live service state, recent incidents, maintenance announcements, and availability history. Scheduled maintenance suppresses expected alerts while preserving check evidence. Email, Slack, Microsoft Teams, Discord, webhooks, PagerDuty, Opsgenie, push notifications, on-call rotations, role-based access, audit history, SLA reporting, and CSV exports support day-to-day operations.
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OnlineOrNot
We keep a close eye on your websites, APIs, cron jobs, and other scheduled tasks. Your team receives instant notifications through various channels, including email, SMS, Slack, PagerDuty, and Incident.io. You don’t need to be a tech expert to get started, as our setup is straightforward and user-friendly. Enjoy peace of mind with monitoring that helps you sleep easier at night. Checks can be performed as frequently as every 30 seconds, allowing you to identify problems that could temporarily disrupt your website. Each check can be customized with specific HTTP methods, headers, and bodies according to your needs. OnlineOrNot ensures reliability by conducting each check at least twice before notifying you, with the possibility of additional checks if required. Furthermore, OnlineOrNot monitors your SSL certificates for any impending expirations or potential issues and promptly alerts you if something goes awry. You have the option to perform uptime checks from a single region or multiple locations simultaneously. Since your customers depend on your services, keep them informed with a dynamic status page that updates automatically. You can easily add your customers as subscribers to this status page and send regular updates about any incidents via email to keep everyone in the loop. This proactive approach not only enhances customer trust but also improves overall service reliability.
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