Uptime monitoring
for your website
No credit card required
Trusted by thousands of businesses
30-second setup.
Simple to setup,
yet deeply configurable.
You don't have to be an engineer to set it up.
Simple and effective monitoring that lets you sleep a bit better at night.
Sometimes our app server goes down when pushing changes from dev to prod, and as the founder I don't always notice.
OnlineOrNot helps us catch these issues hours before our customers do.
— SaaS founder
- Super-fast checks.
- Check as often as every 30 seconds, and catch the issues that take your website down for less than a minute.
- Configurable HTTP requests.
- You can configure the HTTP method, headers, and body for each check.
- Instant alerts.
- Alerts in the tools you already use: Email, SMS, Slack, Discord, Incident.io, PagerDuty, OpsGenie, Grafana OnCall, Spike, and more.
- No false positives.
- OnlineOrNot runs every check at least twice before sending an alert, with options for even more.
- SSL Monitoring.
- OnlineOrNot will check your SSL certificates for expiration and other issues, and alert you if there's a problem.
- Geo-specific & Multi-location Checks.
- You can choose to run uptime checks from one region, or all of them.
Build trust.
Keep your customers informed
Your customers rely on your products and services. Let them know your real-time status with an automatically updating status page.
- Minimize support load.
- Add your customers as subscribers to your status page, and send consistent incident updates via email.
- Private status pages.
- Share internal status updates with your teammates and internal stakeholders with a private status page.
We pitch our website to investors and influencers all the time. If the website is down, we look like amateurs.
We know our website is online before these important meetings thanks to OnlineOrNot.
— early start-up founder
Incidents happen.
Get alerted immediately.
Bring your team and your tools, and OnlineOrNot will let you know when things go wrong, before your customers do.
- Supports what you already use.
- Get alerts over email, SMS, Slack, Discord, Incident.io, PagerDuty, Opsgenie, Grafana OnCall, Spike, webhooks, and more.
When my websites break, I used to find out only after several days of downtime - from angry clients.
OnlineOrNot tells me immediately when I make a bad deployment, simply and beautifully.
— a freelance developer
What makes OnlineOrNot so good?
For one, it's run by a human, that has been running this business for years.
OnlineOrNot isn't run by a startup or huge team, it's just me. I personally respond to every email, and deeply care about the problems I'm trying to solve - otherwise I wouldn't be doing this every day!
- Geo-specific & Multi-location Checks.
- You can choose to run uptime checks from one region, or all of them - either way OnlineOrNot will retry several times from different clouds before alerting you.
- SSL Monitoring.
- OnlineOrNot will check your SSL certificates for expiration and other issues, and alert you if there's a problem.
- Public API & Open-source CLI
- You can use our public API to integrate uptime check data into your own systems, or use our open-source CLI to check status from your terminal.
- On-call integrations.
- Already using an On-call tool like PagerDuty, Incident.io, or Opsgenie? OnlineOrNot natively supports sending alerts to them.
- Keyword monitoring.
- You can monitor any URL for keywords, and get notified when they disappear.
- Webhook Alerts.
- Alerts to Email, SMS, Slack, or Discord not enough? You can use our webhook alerts to send alerts to any service you'd like.
People ❤️ OnlineOrNot
OnlineOrNot is built for scale and runs millions of uptime checks every week. Thousands of sites, startups and some of the world's leading brands have already made the switch from other uptime monitors.
- Uptime Checks last week
- 8.3M
- Users
- 2,912
- Detected incidents last week
- 7,723
OnlineOrNot has been absolutely fantastic for my bot, Noti. It completely transformed the way I monitor online services.
The real-time notifications keep me in the loop about any downtime, allowing me to take immediate action. If you're looking for a reliable way to monitor your project's status, I highly suggest using OnlineOrNot.
Adam HMaker of Noti
Bet on indie hackers 🚀
I tried @RozenMD's OnlineOrNot uptime monitoring, and for a few days got notifications of 2min down time.
I thought that OnlineOrNot was wrong as Uptime Robot wasn't reporting anything.
Turns out it was the other way around.
Khaled BentoumiFounder of Data to Page
We've been using OnlineOrNot and it has been a life saver.
It, by far, has been one of the most responsive uptime services we've tried and it only gets better and better as time goes on.
Alex BowlesFounder of Casterlabs
I just set up some site aliveness checks for @Archium_io with @RozenMD's OnlineOrNot.
Took me less than five minutes and it was completely self-explanatory, not to mention gorgeous. Seriously good experience.
Great job, Max! 👏👏
Graham LeaFounder of Archium.io
OnlineOrNot by @RozenMD is all one needs
It is easy to set up and very reliable. I have been using it for almost an year now.
Rajat SaxenaFounder of CourseLit
I'm using OnlineOrNot to monitor my @cloakist customers' sites, so I can respond quickly if they stop working
Love it. Super clean interface, very intuitive. Particularly impressed at how it can wait for full page load
Thanks @RozenMD for making this awesome tool!
Louis BarclayFounder of Cloakist
OnlineOrNot does the job for me.
Charles MillerSoftware Architect at Atlassian
in 30 seconds:
No credit card required.