Uptime.com
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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UptimeRobot
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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Oh Dear
Oh Dear provides a straightforward solution for monitoring the uptime and SSL status of your websites and applications, making the process hassle-free. This comprehensive application includes features such as an API, webhook capabilities, and alerts via Slack, HipChat, Pushover, and email, with even more enhancements on the way. The DNS records play a vital, yet often overlooked, role as they convert your domain name, which is easily recognizable to humans, into an IP address that computers can interpret. By leveraging the full capabilities of each integration, Oh Dear ensures that notifications are not only informative but also actionable; for instance, you can initiate a new uptime check directly from Slack without switching platforms. In case of an error reported by the primary location, a secondary location will be utilized to confirm the issue, and alerts will only be issued if both checks indicate that the site is down, ensuring reliability in monitoring. This dual-check system provides an extra layer of assurance, allowing users to trust the alerts they receive.
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Hyperspin
If you're not a machine, constantly checking your website's status can be quite impractical. Instead, let our automated service handle this monotonous task, allowing you to relax with confidence. We offer support for various protocols, including ping, HTTP, HTTPS, FTP, SSH, SMTP, DNS, POP3, IMAP, MySQL, and any other services that operate on TCP/IP. There's no need for complex installations; just access our service through any web browser. Our monitoring system keeps an eye on your websites and servers from a network of 54 locations around the globe. We believe that informed users are empowered, which is why we present all necessary data regarding the uptime and performance of your sites in straightforward reports and graphs. Additionally, a public report is accessible for transparency. Stay ahead of potential issues with instant notifications when your website or server faces difficulties! Alerts are sent through email, SMS, and push notifications. You also have the option to set up both one-time and recurring maintenance windows to temporarily stop uptime checks, ensuring you won’t receive downtime alerts during scheduled outages. When you choose our service, you gain a reliable partner in maintaining your online presence.
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