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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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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PageWatch
Monitor the updates across your entire website to identify and resolve issues before your users encounter them. Detect visual discrepancies on every page to maintain a smooth user experience, as studies indicate that nearly 85% of visitors may leave if they encounter errors. Understand how new modifications impact your site and discover any unforeseen consequences early on to avert potential problems. PageWatch utilizes Lighthouse to scrutinize your website for performance bottlenecks that could diminish conversion rates. This effortless tool for front-end testing enables you to check any website for various issues, including performance flaws, layout problems, spelling errors, broken links, and more. Integrate PageWatch seamlessly into your continuous integration workflow, allowing you to evaluate your site with each pull request or deployment and catch any emerging issues promptly. Additionally, our Netlify build plugin facilitates automatic PageWatch audits from pull request previews or production builds, ensuring that quality is consistently monitored. By leveraging PageWatch, you can enhance your site’s reliability and improve user satisfaction significantly.
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ChangeTower
Website changes can be monitored, alerted, and archive all history. ChangeTower is a powerful website detection and archiving platform. You can set up custom alert criteria, track and monitor website changes, and get notified. You can choose a URL to monitor changes on web pages or set it for archival. Our engines will crawl a page and capture a visual screenshot, text-based content snapshot and source code. Our powerful change monitoring network monitors changes to websites over time. We will notify you when we detect changes that match your settings, and then automatically record and archive a page snapshot. You can monitor a specific section of the page for visual changes or keywords, sentences, code updates and images. You can create advanced criteria to monitor. You choose which element(s) to monitor on a website and when to send change alerts.
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