| Tool | Free tier |
|---|---|
| Pagerless | You + 1 backup, 3 apps; calls on your own Twilio |
| PagerDuty Free | Up to 5 users, 1 schedule, 100 SMS or calls a month |
| Grafana Cloud IRM | Up to 3 active users a month |
| incident.io Basic | 1 schedule, single-team on-call |
| FireHydrant | Up to 10 responders; on-call (Signals) on paid plans |
| Better Stack | 10 monitors, Slack and email alerts |
Details and sources: PagerDuty alternatives.
Questions
Is there a free PagerDuty alternative?
Yes. Pagerless is free for you and one backup with up to 3 apps, and calls you through your own Twilio account at Twilio's price. PagerDuty itself has a free plan for up to 5 users with one schedule. Grafana Cloud IRM is free for 3 active users.