WatchSumo monitors your website uptime, and sends your email, webhook or Slack alerts when there is a problem.
Cost / License
- Paid
- Proprietary
Application types
Platforms
- Software as a Service (SaaS)


updown.io is described as 'HTTP monitoring solution with a clean UI and a cheap and simple pricing. It notifies you of downtimes by email or SMS and provides a public status page you can share' and is a Uptime Monitor service in the network & admin category. There are more than 100 alternatives to updown.io, not only websites but also apps for a variety of platforms, including SaaS, Android, Windows and Linux apps. The best updown.io alternative is Better Stack. It's not free, so if you're looking for a free alternative, you could try Better Stack or Uptime Kuma. Other great sites and apps similar to updown.io are Tianji, Pingdom, StatusEntry and StatusCake.
WatchSumo monitors your website uptime, and sends your email, webhook or Slack alerts when there is a problem.


Free uptime monitoring for websites, servers and APIs. Supports HTTP, TCP, UDP and ICMP. Instant alerts to Telegram, Discord, Slack.



Free Website/Server Uptime Monitoring & Status Pages. Easy and reliable uptime and performance monitoring solution, with highly customizable and fast status pages.




Semonto is an uptime monitoring app that allows you to keep an eye on your websites, servers and apps 24/7. Get notified when something goes wrong so that you can fix it before anyone notices.




Simple website availability and uptime monitoring tool. No installation, checks for backend and frontend errors.


Reliable uptime monitoring, status pages and rapid alerting service designed with the needs of online businesses in mind.



Statusdroid operates a worldwide network of servers which checks your website every 30 seconds from over 15 worldwide locations.
Website Uptime Monitoring Done Right. Remarkable Simplicity, Unparalleled Reliability and Unbeatable Value
PowerOutage monitors over 2,000 electric companies in the United States and detects power outages and other problems based on website users reports.

Easy-to-use and accurate real-time monitoring of your websites and APIs to keep you up to date with performance. In the event of an outage, we notify you immediately via email, Slack, Webhooks, SMS, Telegram, or Discord.



StatusDrop is an embeddable status widget and hosted status page for SaaS applications. Add a single script tag to your site to show real-time status of 550+ third-party services like Stripe, AWS, Vercel, Cloudflare, and more.
