Cronitor
Utilities Free tier (card may be required)
AuthenticationFree tier (card may be required)
Rate limitFree Hacker plan: 5 monitors, 5-minute checks, 1 status page, 50 subscribers
Documentation: cronitor.io ยท Checked Sep 13, 2026
About
Cronitor is unusual: it monitors websites and APIs like other uptime tools, but also watches your cron jobs and scheduled tasks to make sure they actually ran. The free Hacker plan includes 5 monitors with 5-minute checks, email and chat alerts, one status page, and 50 subscribers. Great for solo developers keeping background jobs honest.
Details
Free tier, but a card may be required to sign up.
Auth: Free tier (card may be required)
Rate limit: Free Hacker plan: 5 monitors, 5-minute checks, 1 status page, 50 subscribers
Verified: 2026-09-13
Best for: developer business personal
Setup
- Sign up for a free Cronitor account
- Create an uptime monitor for your site or a heartbeat monitor for a cron job
- Copy your API keys for the Monitor API and Telemetry API
- Ping Cronitor from your jobs with the CLI or a simple HTTP call
- Add a status page and alert integrations
Example
Create a monitor: curl -X PUT https://cronitor.io/api/monitors -u API_KEY: -d '{"key": "site", "type": "check", "request": {"url": "https://example.com"}}'Use cases
- Get alerted when a nightly backup or report job fails to run
- Monitor a personal site and API endpoints for free
- Publish a simple public status page for a side project