failover.io is described as 'Uptime monitoring service built around one principle: the alert chain, not a single ping. Configure a sequence of channels per monitor — email, SMS, voice call, Slack, Discord, Telegram, Microsoft Teams, PagerDuty, webhook, ntfy — and each step waits for' and is a website monitoring tool in the network & admin category. There are more than 10 alternatives to failover.io for a variety of platforms, including Web-based, SaaS, Self-Hosted, Android and iPhone apps. The best failover.io alternative is Uptime Kuma, which is both free and Open Source. Other great apps like failover.io are Better Stack, UptimeRobot, Tianji and Pingdom.