We alert you, before your customers do.
OnlineOrNot monitors your websites, web apps, and APIs, letting you know instantly if anything goes wrong.
Cost / License
- Freemium
- Proprietary
Application types
Platforms
- Software as a Service (SaaS)


Uptime Kuma is described as 'Advanced self-hosted tool for tracking uptime across multiple services with reactive UX, interval checks, various notifications, and multi-language support' and is a popular website monitoring tool in the network & admin category. There are more than 100 alternatives to Uptime Kuma for a variety of platforms, including Web-based, SaaS, Self-Hosted, Windows and Linux apps. The best Uptime Kuma alternative is Better Stack. It's not free, so if you're looking for a free alternative, you could try Better Stack or UptimeRobot. Other great apps like Uptime Kuma are Pingdom, Kener, HetrixTools and StatusCake.
We alert you, before your customers do.
OnlineOrNot monitors your websites, web apps, and APIs, letting you know instantly if anything goes wrong.


Pingbreak is an original and free monitoring service. Get notified through Twitter if your website is down. Pingbreak checks all of your websites each minute and alert you instantly by Direct Message (DM)



Don't lose your customers because your service is down! Monitor your websites and cloud services from multiple geographic locations and receive instant alert when there is downtime or issue. Be proactive and keep your customers happy!.




UptimeMate helps you to find technical issues on your websites and makes sure that you are the first to know.



Proactively monitor your websites and online services. Receive immediate notification when a problem is detected so you can quickly resolve the root cause and prevent potential escalation.




Monytra is a website uptime monitoring tool built for freelancers and web agencies. Monitor your clients' websites, get instant downtime alerts, and manage everything from a clean, simple dashboard with more included on the free plan than most alternatives.




Server Monitoring and Down Alerts made easy! WIndows, Linux & macOS Monitor servers easily and receive alerts on CPU, RAM or downtime.

WatchSumo monitors your website uptime, and sends your email, webhook or Slack alerts when there is a problem.


UpWatchr is a native Windows desktop application for monitoring websites and network resources. It pings your configured endpoints on a schedule and shows their live status on a clean dashboard, with green/red indicators and alert notifications the moment something goes offline.


Pinger Man is a modern platform to monitor Uptime of Websites and Applications. It supports notification via Email, SMS and Web Hooks. Users can also showcase the uptime of their services using Public Status Pages.

Statusdroid operates a worldwide network of servers which checks your website every 30 seconds from over 15 worldwide locations.