Fern vs Mihari
Fern
buildwithfern.com
Mihari
mihari.ioSide by side
| Figure | Fern | Mihari |
|---|---|---|
| Price from | Free | €19/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 2 | 3 |
| Spec score · API Documentation Tools | 8.9 (#1) | 8.0 (#11) |
| Integrations | Listed integrations include PostHog, Google Analytics, Segment, Mixpanel, FullStory, Intercom, Postman, and Context7. | The error tracking page lists GitHub, Slack, Jira, PagerDuty, and webhooks as integrations. |
| Security | Fern's trust center lists SOC 2 Type II, GDPR, and CCPA and provides access requests for its SOC 2 report, penetration test summary, and information security policy. | The maker says source maps are encrypted at rest and never publicly accessible. |
| Support | The Enterprise plan includes dedicated support and an uptime SLA. | The maker says support goes directly to its founder, who personally answers the support inbox. |
Plans
Mihari
- Free for personal projectsFree
- Early Access€19, paid once
- Platform access€19 a month
In their own words
Mihari
Mihari is a cloud observability platform combining uptime monitoring, on-call alerting, telemetry, API documentation, and error tracking. Its European probes check HTTP, TCP, DNS, and ICMP at intervals down to 30 seconds. On-call tools provide rotation schedules, escalation chains, and notifications through email, SMS, phone calls, Slack, Microsoft Teams, PagerDuty, and webhooks. Telemetry covers logs, metrics, and distributed tracing, with OpenTelemetry and Prometheus ingestion. Error tracking records stack traces, source maps, and contextual breadcrumbs, and groups duplicate errors. The free plan includes 10 monitors, one status page, 1 GB of logs retained for seven days, three dashboards, one documentation project, five team members, one escalation policy, email alerts, and 5K error events monthly. Platform access costs €19 per month; Early Access costs €19 one-time. Mihari is web-based, hosted in France, GDPR compliant by design, and in public beta.