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Graylog makes sense if you want log management and SIEM detections and can manage the stack. The pricing page notes a free plan and says paid plans start at $15,000 a year. Reddit users discussing a switch point to cost, infrastructure work and a desire to bring logs, metrics and alerting together. Those are different problems, so we’ve grouped alternatives by their fit rather than treating every monitoring tool as a direct log-manager replacement.
01Why people leave Graylog
You want less stack management
Graylog is presented as a fit for teams comfortable managing Elasticsearch. If that is now a burden, compare managed observability options before migrating.
The price no longer fits
The pricing page says Graylog paid plans start at $15,000/year. Reddit users also flag cost as a reason to reconsider observability stacks.
You need broader observability
A Reddit thread describes using Graylog for logs and wanting metrics dashboards and alerting too. Some alternatives cover multiple telemetry signals.
02The alternatives, ranked by fit
- Combined telemetry
GrafanaGrafanaGrafana is the closest fit here if you want configurable dashboards across telemetry signals rather than a log-focused tool. The pricing page says it has a free plan and starts at $19. Reddit commenters recommend Grafana for logs, metrics and alerts, but that advice is not a guarantee it will replace your Graylog setup as-is.
Trade-off: The $19 Pro fee is only the start; the listing says to monitor usage charges.
7.0/10from
$19/mofree plan - Broad observability
DatadogDatadogDatadog is worth comparing if you want to consolidate monitoring rather than keep separate tools for logs and metrics. The pricing page describes broad monitoring coverage and starts at $500. In the Reddit thread, users value having metrics, logs and traces together, while warning that logs and other usage can make costs rise quickly.
Trade-off: The listed starting price does not show the full bill; Reddit users warn costs can grow.
6.7/10from
$500/mo - Free monitoring base
PrometheusPrometheusPrometheus fits teams moving toward open-source monitoring and PromQL-based queries and alerts. The pricing page shows a free plan and no paid starting price. It is not described here as a direct Graylog replacement, so consider it when your priority is cloud-native service monitoring rather than replacing log management and SIEM detections one-for-one.
Trade-off: Independent servers use local storage, according to the pricing page.
7.6/10from
Freefree plan - Tool consolidation
New RelicNew RelicNew Relic is a candidate if your reason for leaving Graylog is consolidating observability tools. The pricing page gives it a free plan and a $10 starting price, and names incident response as a use case. That makes it worth comparing for a broader monitoring setup, but the published details do not establish parity with Graylog’s log management or SIEM detections.
Trade-off: The listing warns that user and ingest costs can rise.
7.5/10from
$10/mofree plan - Self-managed monitoring
ZabbixZabbixZabbix is a fit to investigate if you want to avoid per-host license fees and are willing to manage your own monitoring stack. The pricing page describes broad IT and OT infrastructure monitoring and a free plan. It is not presented as a log manager, so treat it as a monitoring alternative, not a like-for-like Graylog swap.
Trade-off: The listing says it takes work to configure well.
7.6/10from
Freefree plan - Cloud observability
DynatraceDynatraceDynatrace is worth a look if you need broad observability and work in Kubernetes or cloud-native environments. The pricing page starts at $7 and calls out topology-driven investigation. Those details point to a broader observability option, not a confirmed replacement for Graylog’s log management or SIEM detections; check the contract terms before comparing its headline price.
Trade-off: The listing says to check the annual commitment before trusting the $7 starting price.
6.8/10from
$7/mo
03Side by side
| Tool | Score | From | Free plan | Best for |
|---|---|---|---|---|
 Graylog Graylog (current) | 7.2 | $1,250/mo | Yes | Teams needing self-managed log management |
| Grafana Grafana | 7.0 | $19/mo | Yes | Teams combining multiple telemetry signals |
| Datadog Datadog | 6.7 | $500/mo | No | Teams seeking broad monitoring coverage |
| Prometheus Prometheus | 7.6 | Free | Yes | Teams wanting open-source monitoring |
| New Relic New Relic | 7.5 | $10/mo | Yes | Teams consolidating observability tools |
| Zabbix Zabbix | 7.6 | Free | Yes | Teams avoiding per-host license fees |
| Dynatrace Dynatrace | 6.8 | $7/mo | No | Teams needing broad observability coverage |
Questions people ask
Is there a free Graylog?
The published Graylog listing says there is a free plan. It also says paid plans start at $15,000 per year. The listing does not spell out the free plan’s limits, so check Graylog’s current plan terms before assuming it covers your log volume or required features.
What is the best open-source log manager?
The published alternatives do not identify a direct open-source log-manager replacement. Prometheus and Zabbix are listed as free monitoring options, but the published descriptions do not call them log managers. If log management is the requirement, compare products on that specific capability rather than treating a free monitoring plan as equivalent.
Is Graylog still open-source?
The published material confirms a free plan, but it does not establish Graylog’s current open-source status or licensing terms. Free access and open-source licensing are not the same thing. Check Graylog’s current edition and license details before choosing a plan or planning a migration around open-source requirements.