Uptime.com website monitoring solutions provide unmatched visibility and availability, empowering engineering, operations and SRE teams to monitor & respond to their most essential services. Simple & intuitive industry leading Enterprise-grade features delivered at a fair price, that are continuously improving.
G2, Sourceforge and TechRadar Pro have recognized us as one of the world’s best uptime monitors for several consecutive years, including this one. Try 100% free.
Learn more

The ultimate uptime monitoring service. Get 50 monitors with 5-minute checks completely free. Set up in seconds and stay informed about your website’s health at all times.
Website monitoring: Get instant alerts when your website goes down. Reliable and accurate monitoring helps you fix issues before they affect users and prevent revenue loss.
SSL certificate monitoring: Avoid losing visitors due to expired SSL certificates. Get notified 30 days before expiration so you can renew in time.
Ping and port monitoring: Check if your server is online or if your email service is running on port 465. Monitor any port you need with real-time alerts.
Cron job monitoring: Track scheduled tasks with heartbeat monitoring. We verify if the request arrives on time, making sure server-side jobs and internet-connected devices are running properly.
Status pages: Create up to 100 branded status pages, protect them with a password, and allow subscribers to receive updates.
Stay informed with email, SMS, voice calls, push notifications, or integrations with Slack, Zapier, PagerDuty, Telegram, Discord, Microsoft Teams, Google Chat, and more.
Maintenance windows: Pause monitoring when you schedule downtime to avoid unnecessary alerts
Learn more
Squid Alerts
Squid Alerts utilizes on-call schedules and escalation protocols to ensure that alerts are directed to the appropriate individual via SMS, voice calls, email, and push notifications. Notifications from various systems reach your team through channels such as email, API integrations, or voicemail messages. Both managers and team members can be included, and features like flood protection, shared phone numbers for direct routing to on-call personnel, and additional integrations are also available. Team leaders have the ability to establish alert routing criteria and escalation pathways. Upon receiving an alert, the routing criteria dictate whether to initiate an incident, pass the alert along, or disregard it altogether. The escalation pathways outline who is notified, by what means, and the timing of these notifications. On-call calendars can be tailored to include both primary and secondary on-call personnel. We can either handle your on-call management automatically or help you create personalized schedules. Furthermore, you can receive reminders if you forget to modify your on-call calendar, ensuring that no critical updates are missed. This comprehensive approach simplifies alert management and enhances team responsiveness.
Learn more
OpsFusion
OpsFusion is a user-friendly platform for on-call scheduling and alert management, specifically designed for teams that require dependable incident escalation without the complications and costs often associated with large enterprises. Many existing on-call solutions cater to big organizations, complete with complex pricing structures and dedicated procurement channels. However, OpsFusion offers a straightforward pricing model of just $10 per user per month, inclusive of all features with no tiers, additional costs, or the need for a sales consultation to begin using the service.
Users can create customizable on-call schedules—whether daily, weekly, or entirely tailored to their needs—and establish multi-layered escalation procedures to ensure that alerts reach the appropriate team member via email, SMS, or voice call, with automatic follow-up if an alert is overlooked. Additionally, a built-in mute option prevents continuous notifications during a current outage being addressed. For teams wishing to integrate their current monitoring systems, various integrations are also available, and alerts can be dispatched directly from the application. Comprehensive metrics and audit logs are included for tracking purposes.
To help teams get started, OpsFusion offers a 30-day free trial that includes 100 alerts with no credit card required, making it easy to try out the platform risk-free.
Learn more