Side by side
Checkly vs OneUptime
Both stand on synthetic monitoring. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APILinuxWeb
Checkly combines uptime monitors, browser-based checks, and scheduled Playwright suites with a code-oriented workflow. The free Hobby plan has monthly run caps; paid plans start with Starter at $24 a month.
Visit Checkly
Free plan APILinuxSelf-hosted+1
OneUptime brings service monitoring and incident response together, with both hosted plans and self-hosted deployment options. The free tier has a limited status-page allowance, no uptime SLA, and separate charges for active monitors.
Visit OneUptimeThe facts
| Checkly | OneUptime | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Linux, Web | API, Linux, Self-hosted, Web |
| Lowest paid plan | Starter: $24 a month | See the plans |
| Plans published | 4 | 10 |
| Maker | Not published | Not published |
| Website | checklyhq.com | oneuptime.com |
| On synthetic monitoring | #2 of 43 | #6 of 43 |
Checkly: what it does well
- Monitors eight listed uptime check types.
- Browser checks simulate user interactions.
- Runs full Playwright suites as scheduled monitors.
- CLI deploys monitors from a terminal.
- Free plan includes API and browser check runs.
What to know first
- Hobby caps API runs at 10,000 monthly.
- Hobby caps Browser Check runs at 1,000 monthly.
- Enterprise pricing is custom and not listed.
- Enterprise-only support includes 24x7 phone escalation.
OneUptime: what it does well
- Incident management includes on-call rotations and alerts
- Synthetic tests simulate user flows
- Core platform is open source under Apache 2.0
- Self-hosting supports Kubernetes or Docker Compose
What to know first
- Free plan has no uptime SLA
- Free plan includes one status page and 100 subscribers
- Active monitors cost $1 per month each
- Free-plan email support has a five-business-day SLA
Alternatives to Checkly Alternatives to OneUptime The whole list