We may earn a commission if you buy through links on this page. It never changes a score or a ranking. How we make money
Checkmk is not an obvious tool to leave: Reddit users value its flexible rules, host discovery and alerting. But a reason to switch can be a mismatch with cloud services or a preference for less ongoing configuration. The options below range from self-managed monitoring to broader observability products. Checkmk has a free tier, but the pricing page gives no paid starting price and describes its paid plans as euro-priced.
01Why people leave Checkmk
Cloud services can feel host-centric
A Reddit commenter said adding a host and auto-discovering services is the easy path, while defining services without hosts is less automatic.
Rules can mean more setup
Reddit users praised Checkmk’s flexible rules; another commenter preferred PRTG because it needed less ongoing babysitting after setup.
Teams want less maintenance
One Reddit commenter contrasted PRTG’s lower ongoing upkeep with building monitoring around rules and custom checks. That preference is not universal.
02The alternatives, ranked by fit
- Best for self-managed teams
ZabbixZabbixZabbix is a fit if you want broad IT and OT monitoring without per-host license fees. Its listing describes it as a free-plan option for experienced teams managing their own stack. That makes it a candidate for teams willing to own configuration rather than pay for a more managed observability product.
Trade-off: It takes work to configure well and manage yourself.
7.6/10from
Freefree plan - Best for cloud-native teams
PrometheusPrometheusPrometheus is a free-plan option for teams monitoring cloud-native services and writing PromQL queries and alerts. It is worth considering if your team prefers an open-source monitoring base over Checkmk’s host-first discovery model. The fit is strongest when your team is comfortable operating the monitoring stack itself.
Trade-off: Independent servers use local storage.
7.6/10from
Freefree plan - Best for mixed telemetry
GrafanaGrafanaGrafana suits teams that want to combine multiple telemetry signals and configure their own dashboards. Its listing starts at $19 and includes a free plan, but warns that Pro’s fee is only the start of the bill. Consider it if configurable dashboards matter more than a single host-based monitoring workflow.
Trade-off: Usage charges can add to the $19 Pro fee.
7.0/10from
$19/mofree plan - Best for broad coverage
DatadogDatadogDatadog is aimed at teams seeking broad monitoring coverage or consolidating observability and security tools. That makes it a possible move if Checkmk’s host-based approach no longer matches the systems you need to cover. Its listed starting price is $500, and the published summary cautions that this does not show the full bill.
Trade-off: The $500 starting price does not reveal the full bill.
6.7/10from
$500/mo - Best for tool consolidation
New RelicNew RelicNew Relic is listed for teams consolidating observability tools and prioritizing incident response, with a free plan and a $10 starting price. It may suit teams looking beyond Checkmk’s infrastructure-monitoring focus for an all-in-one observability option. The price summary specifically warns that user and ingest costs can rise.
Trade-off: User and ingest costs can rise.
7.5/10from
$10/mofree plan - Best for Kubernetes observability
DynatraceDynatraceDynatrace targets teams that need broad observability coverage, especially in Kubernetes and cloud-native environments, and value topology-driven investigation. It is a candidate if Checkmk’s host-oriented approach is a poor fit for your environment. The listed price starts at $7, but the published summary says to check the annual commitment.
Trade-off: Check the annual commitment before relying on the $7 starting price.
6.8/10from
$7/mo
03Side by side
| Tool | Score | From | Free plan | Best for |
|---|---|---|---|---|
 Checkmk Checkmk (current) | 7.4 | Free | Yes | Teams monitoring mixed infrastructure |
| Zabbix Zabbix | 7.6 | Free | Yes | Teams avoiding per-host license fees |
| Prometheus Prometheus | 7.6 | Free | Yes | Teams wanting open-source monitoring |
| Grafana Grafana | 7.0 | $19/mo | Yes | Teams combining multiple telemetry signals |
| Datadog Datadog | 6.7 | $500/mo | No | Teams seeking broad monitoring coverage |
| New Relic New Relic | 7.5 | $10/mo | Yes | Teams consolidating observability tools |
| Dynatrace Dynatrace | 6.8 | $7/mo | No | Teams needing broad observability coverage |
Questions people ask
What is the best free Checkmk alternative?
The pricing page show free-plan options for Zabbix, Prometheus and Grafana. Zabbix is positioned for experienced teams managing their own stack; Prometheus for open-source and cloud-native monitoring; Grafana for combining telemetry signals and building configurable dashboards. The best fit depends on what your team wants to operate.
Which Checkmk alternative is closest to host-based monitoring?
The published information does not identify a direct one-for-one replacement for Checkmk’s host-based discovery. Zabbix covers IT and OT infrastructure, while Prometheus is positioned for cloud-native service monitoring. Checkmk users on Reddit describe host discovery as a strength, so compare how each option handles your actual devices and services before switching.
How much does Checkmk cost compared with these alternatives?
The published Checkmk listing shows a free plan but no paid starting price; it describes paid plans as euro-priced. Listed alternative starting prices range from $7 for Dynatrace to $500 for Datadog, with free plans noted for Zabbix, Prometheus, Grafana and New Relic. These figures do not establish your full bill.