Better Stack: Spot, Resolve, and Prevent Downtime.
Web and Cron monitoring
StatusCake
updown.io – Website monitoring, simple and inexpensive
Online Cron Service | Webcron - EasyCron.com
Simple monitoring for any application | Cron Monitoring | Website Monitoring | & more | Cronitor
pingdom.com
24/7 AI Website Monitoring to Protect & Grow Business | Hexometer
Uptime Kuma
UptimeRobot: Free Website Monitoring Service