isUp is described as 'Website/Server monitoring with fast notification via Web, SLACK or E-Mail on issues. What you get: 25 monitors, checked every 15 minutes. Now includes SSL-Certificate validation and port checks. Totally free!' and is a Uptime Monitor service in the network & admin category. There are more than 50 alternatives to isUp, not only websites but also apps for a variety of platforms, including SaaS, Self-Hosted, Linux and Windows apps. The best isUp alternative is Uptime Kuma, which is both free and Open Source. Other great sites and apps similar to isUp are UptimeRobot, Pingdom, Instatus and StatusCake.
Performance monitoring simplified. Never let users see your website down or with bad loading speeds. Receive alerts & insights in real-time on health and performance.
UptimeMate helps you to find technical issues on your websites and makes sure that you are the first to know.
Power-ups for your team, business, project. Server monitoring, Phabricator hosting, hosted status pages and mail servers to help you deliver extra fast.
Netthrob runs automated verification checks on your website every three minutes from five different geographies and immediately informs you through Phone, SMS & Email when your site goes down.
Silent Down is a website uptime and performance monitoring platform, to keep an eye on your application and instantly alert you if any issues arrive.
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.
StatusKit provides the companies with the service allowing them to monitor their business service internally. If there is a disruption in service, incident notes will be updated here.
Unlimited monitors checked from multiple location every minute. Monitor any port or setup a "heartbeat" that works well for cron jobs or any service behind a firewall. Be alerted as soon as your service is offline via email or app integration.
Pingoscope will carefully monitor your website and alert you instantly if it goes down. Unlimited email SMS, Skype, Phone Call notifications, historical response time data, one minute check intervals data and more features available for free as well as no limit accounts for...
StablePing is a fully managed uptime monitoring service for just $3.95/month. Whenever your website goes down, their system will alert you within seconds via email or SMS (and they'll work with you to get it back online).
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