OpenObserve
| License | FOSS problems | Maintenance | SSO | Users | Tested |
|---|---|---|---|---|---|
| AGPL-3.0 | Separate commercial Enterprise Edition; single-founder governed, not foundation-backed | Active | ❌ | Unlimited | ❌ |
Description
OpenObserve is a general-purpose observability platform — logs, metrics, traces, RUM, and session replay, ingested, stored, queried, and alerted on through one Rust-based, single-binary system. Positioned explicitly against Datadog, Splunk, and Elasticsearch, not against a security-specific tool like CrowdSec or Wazuh.
Features
- Single binary, broad scope — logs, metrics, traces, RUM, and session replay under one deployment, rather than assembling Elasticsearch/Loki/Prometheus/Grafana separately for each signal type.
- Alerting included, not gated — dashboards and alert rules ship in the open-source edition itself, not held back for a paid tier.
- Built for high-volume ingest at lower cost — the project's own pitch is storage efficiency against Elasticsearch-shaped workloads specifically, relevant only if log/metric volume ever grows enough for that to matter.
Usage patterns
- General log-aggregation backend, not turnkey security detection — no pre-built attack-pattern scenarios and no blocking action of its own; a query/alerting engine you'd write "does this look like a brute force" detection logic into yourself, unlike CrowdSec or Wazuh which ship that logic ready-made.
- Broader than the actual gap it'd fill here — metrics, traces, and RUM are outside what this catalog's monitoring gap (log visibility, file-integrity) actually needs; adopting it means taking on a full observability platform to get the log half of that.
License and governance
AGPL-3.0 for the open-source edition — notably a strengthening of copyleft: the project moved from a permissive Apache license to AGPL specifically to keep improvements open, the opposite direction of the relicensing-away-from-open pattern flagged elsewhere in this catalog. A separate commercial Enterprise Edition exists alongside it. Founder-led, single-company governed, not foundation-backed.
Conclusion
Why you would — a genuinely open, self-hostable answer to what Datadog is: one platform for logs, metrics, traces, and RUM, with alerting included rather than gated, and real storage-efficiency engineering behind it.
Why you wouldn't — it's a general observability platform standing in for a security-specific gap. No pre-built detection scenarios like CrowdSec's, no bouncer-style blocking, and no file-integrity monitoring at all — the two things this catalog's monitoring gap actually names. Worth adopting for its own sake (real visibility across everything, not just security events), not as a drop-in substitute for CrowdSec or Wazuh.