Website Availability
Monitoring
Know instantly when your website goes down. 1-minute checks, instant alerts, and a clean dashboard to track uptime history — so you can fix issues before your users notice.
Free tier available · No credit card required
Without monitoring, you're the last to know
Your site goes down at 2 AM and you find out from a customer tweet the next morning.
Search engines crawl your site and get errors — your rankings quietly slip.
A user hits checkout, gets an error, and never comes back.
Catch outages that only affect part of the world
A website can look healthy from one location while users in another region hit CDN, DNS, or routing issues. Compare current status and latency by region so you can see whether an incident is global or isolated.
Spot geo-specific failures before customers report them.
Compare response times across regions in one view.
Escalate faster with clearer evidence of where impact starts.
Availability details
GEThttps://sentinelboard.com · Current regional status and recent log events
Current status
Latest check event per region
Regions tracked
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Why website availability monitoring matters
Website downtime is rarely just a technical issue - it directly impacts revenue, SEO, and user trust. Even short outages can cost real money: businesses lose sales every minute a site is unavailable, and the average downtime cost can reach thousands per hour. Beyond immediate losses, slow or unavailable pages reduce conversions and increase bounce rates, with even a one-second delay cutting conversions by up to 7%.
Search engines also take uptime into account. If your website is frequently down, it may not be crawled or indexed properly, leading to lower rankings and lost organic traffic. At the same time, users quickly lose trust - many will simply leave and never return after encountering a broken site.
This is where real-time monitoring with alerting becomes critical. Instead of discovering issues from customers, you're notified instantly when something breaks or slows down. Faster detection means faster fixes, minimizing downtime, protecting revenue, and maintaining a reliable user experience. In many cases, proactive alerts even help catch problems before most users notice them.
In short, website availability monitoring isn't just about uptime - it's about protecting your business, your traffic, and your reputation.
Everything you need for uptime monitoring
Powerful website monitoring features without the complexity. Built for developers who value simplicity.
1-minute check intervals
Your site is checked every 60 seconds so you catch issues before your users do.
HTTP status code validation
We verify your site returns the correct HTTP status, not just that it responds.
Response time tracking
Monitor response times over time and catch performance degradation early.
Multi-channel alerts
Get notified via email, Slack, Telegram, or webhooks. Your choice, your workflow.
Zero configuration
No agents to install, no code changes. Just add a URL and monitoring starts immediately.
Dashboard overview
See all your monitors at a glance with uptime history, response times, and current status.
Stop worrying. Start shipping.
Join hundreds of indie developers who sleep better knowing their apps are monitored 24/7.
Free tier available · No credit card required