Side by side
pingdan vs Sentinel
Both stand on api monitoring tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Web
pingdan offers broad HTTP assertions, frequent checks, certificate warnings, and many alert destinations at no listed cost. The main stated limitation is that account deletion still requires a manual request.
Visit pingdan Free plan APIExtensionMac+1
Choose Sentinel if you need multi-region website and infrastructure monitoring with broad checks, alerts, and status pages. The Free plan covers up to 10 monitors, while paid monthly plans add capacity and features; check the plan limits that fit your monitor and status-page needs.
Visit SentinelThe facts
| pingdan | Sentinel | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | No |
| Runs on | Web | API, Extension, Mac, Web |
| Lowest paid plan | Free or on request | Starter: $14 a month |
| Plans published | 1 | 4 |
| Maker | Not published | Not published |
| Website | pingdan.dev | sentinel.rootstuff.io |
| On api monitoring tools | #15 of 27 | #11 of 27 |
pingdan: what it does well
- Unlimited monitors on the free plan
- Intervals from one minute to seven days
- Many alert integrations
- Automatic HTTPS certificate checks
- Latency percentiles and full history
What to know first
- Account deletion is not self-service
- Deletion requests require a person
- No paid plans are listed
Sentinel: what it does well
- Checks cover uptime, certificates, DNS, domains, page keywords, APIs, ports, and jobs.
- Checks run from four regions as often as every 30 seconds.
- Alerts reach email, SMS, Slack, Discord, Telegram, Teams, or webhooks.
- Customizable status pages include incident history.
- MCP access lets compatible AI agents query monitors and assist with incident triage.
What to know first
- Free checks run every five minutes and cover up to 10 monitors.
- Free includes one public status page.
- The macOS app requires macOS 13.0 or later and a read-only API token.
Alternatives to pingdan Alternatives to Sentinel The whole list