Heartbeat Monitoring
in 30 seconds.

Your cron jobs and scheduled tasks run some of your business's most critical processes.
Make sure they run on time, every time.

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Get started on the free tier, no credit card required.

OnlineOrNot's dashboard

Alerts where you need them

OnlineOrNot sends you instant alerts when things go wrong via:

  • Email
  • SMS
  • Slack/Discord
  • Webhooks
  • Integrations: PagerDuty, Opsgenie, Grafana OnCall, Spike
OnlineOrNot sends alerts via Email, SMS, Slack, Discord, Webhooks, and more to come.

What makes OnlineOrNot so good?

For one, it's run by a human.
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!

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.
I don't collect any data about you, and I do not track you. I don't even use non-functional cookies - notice how there's no cookie banner.

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
Detected incidents last week
    • 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 H
      Maker 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 Bentoumi
      Founder 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 Bowles
      Founder 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 Lea
      Founder 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 Saxena
      Founder 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 Barclay
      Founder of Cloakist
    • OnlineOrNot does the job for me.

      Charles Miller
      Software Architect at Atlassian
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Get started on the free tier, no credit card required.