Uptime.com
                
                We provide peace of mind to thousands of customers like Apple, Microsoft, IBM, Palo Alto Networks, Kraft, and BNP Paribas who trust us to monitor the performance, health, and downtime of their websites, applications, and infrastructure. 
We’ve been recognized as one of the world’s best web monitoring solutions by G2 and TechRadar Pro for several consecutive years, including this one.
Use Uptime.com to:
-Choose domains and configure checks to start monitoring web, network, and email performance at global scale.
-Get accurate, moment-it-happens web downtime and performance alerts to any device or DevOps tool you use.
-Customize system monitoring dashboards to report on critical data across alerts, check types, and SLAs -- segmented by account user or subaccount. 
-Quickly and professionally communicate downtime and outage statuses in the same tool you monitor website performance with.
-Deliver alert notifications response time metrics into your teams go-to tools
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                UptimeRobot
                
                UptimeRobot is a website monitoring service with a forever free plan that lets you register with just an email and monitor up to 50 websites, servers, or keywords with 5-minute intervals. Setup takes only a few clicks.
For faster checks and advanced features, paid plans offer 1-minute or 30-second intervals, along with SSL certificate, domain expiry, and heartbeat (cron job) monitoring. You can also create up to 100 status pages, customize them to match your brand, protect them with a password, and allow subscribers to receive updates.
Get notified instantly via email, SMS, voice calls, or integrations with Slack, Zapier, PagerDuty, Splunk On-Call, Telegram, Webhooks, Discord, Mattermost, Pushbullet, Microsoft Teams, Google Chat, Pushover, and more. Mobile push notifications are available through the iOS and Android apps.
Other features include maintenance windows, incident tracking with root cause analysis, tags, comments, and filters. Share account with other team members.
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                Hyperspin
                
                Unless you are a robot, it is infeasible for you to keep checking your website to see if it is available. Leave this tedious job to our automated service, and enjoy peace of mind. We support ping, HTTP, HTTPS, FTP, SSH, SMTP, DNS, POP3, IMAP, MySQL, and any arbitrary services running on TCP/IP. No complicated software to install; all you need is a web browser. We monitor your websites and servers from a network of 54 worldwide monitoring stations. Knowledge is power, that's why we provide you all the information you need about the uptime and performance of your websites and servers in easy-to-read reports and graphs. Public report is also available. Be the first to know when your website or server is in trouble! We notify via email, SMS and push notification. You can define one-time and recurring maintenance windows to pause uptime checks. We will not send you downtime alerts on planned outages.
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