We detect incidents
before your customers do.

Before OnlineOrNot: Customers tweeting you, emailing you, calling you, wondering why your website doesn't work.

With OnlineOrNot: Reliable downtime alerts (for you/your customers), letting you fix issues before they impact your reputation.

No time limit, and no credit card required.

Trusted by folks from these companies, and hundreds more

Just last week we ran 1,619,227 uptime checks for 1,184 businesses, and reported 3,735 incidents.

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 your support load. Add your customers as subscribers to your status page, and send consistent incident updates via email.

OnlineOrNot sends you instant alerts when things go wrong via:

Making sure your websites, web apps, and APIs are still online doesn't have to mean using a tool that looks like it was built in the 90s.

Our web app even works on mobile, so there's no clunky app to download, install, and log-in to.

Don't just take our word for it, see what our customers think.

- Bet on indie hackers 🚀
  Tried @RozenMD's OnlineOrNot uptime monitoring, and for a few days got notifications of 2min down time.
  Thought that his tool was wrong as uptime robot didn't reported those downtime.
  Turned out it was the other way.
  Khaled Bentoumi
  Founder of Data to Page
- OnlineOrNot does the job for me.
  Charles Miller
  Software Architect at Atlassian
- 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

Ready to get going? Let's go:

No time limit, and no credit card required.