What do you use to monitor cron jobs and queue workers?

I've been running production Laravel apps for a while and noticed that most teams have zero monitoring on their cron jobs and queue workers. Uptime monitors check if a URL responds 200, but they can't tell you if your scheduler stopped firing or your workers crashed.

I built Crontinel (https://crontinel.com) to solve this for myself. It hooks into framework events and monitors scheduler health, worker status, queue depth, and agent runs. Open source, MIT licensed, SDKs for Laravel, Node, Python, Go, Rust, PHP.

Curious what others here use. Do you monitor your cron/queues? What tools? How did you find out when something broke?