Datadog alternatives: 4 free & open-source picks
Curated, verified, and actually free. No trials, no crippled tiers. Star counts and last-activity dates checked by hand, not scraped and forgotten.
A single-binary observability stack that remembers storage is not free.
licenseAGPL-3.0
runsyour machine or their cloud
installHosted signup, or a single binary/Docker container; Helm plus external services for HA
dataTelemetry is stored as Apache Parquet on local disk or object storage; single-node metadata defaults to SQLite, while HA uses PostgreSQL and NATS.
vs DatadogIt covers logs, metrics, and traces, but the agent ecosystem, RUM, synthetics, security products, integrations, and managed operations are much narrower than Datadog's.
setupThe easy single-node path still needs collectors and persistent storage; production HA adds Kubernetes, object storage, PostgreSQL, and NATS.
facts verified 2026-08-14
Logs, traces, errors and session replay joined at the hip.
eBPF observability with opinions; best when your apps live in containers.
licenseApache-2.0
runsyour server
installDocker Compose for one host, or the Kubernetes Operator/Helm for a cluster
enginesCore observability is non-AI; optional root-cause investigations connect to Coroot Cloud or configured Anthropic, OpenAI, Azure OpenAI, Groq, Mistral, Ollama, or OpenAI-compatible endpoints.
dataMetrics use Prometheus-compatible storage or ClickHouse, while logs, traces, and profiles use ClickHouse; configuration uses SQLite by default or PostgreSQL.
vs DatadogIt is strongest for Linux containers and Kubernetes, but lacks Datadog's breadth across integrations, synthetics, RUM, security, cloud services, and managed global operation.
setupThe eBPF node agent needs a supported Linux kernel and privileged host access on every node, and the product is most natural for containers and Kubernetes.
facts verified 2026-08-14
Monitoring, incidents and status pages in one stack; simplicity did not survive.
licenseApache-2.0
runsyour machine or their cloud
installHosted signup, or the release-branch Docker Compose stack; Helm is the production path
enginesIts AI features can connect to OpenAI, Azure OpenAI, Anthropic, Groq, Mistral, Ollama, and OpenAI-compatible servers such as vLLM, LocalAI, or LM Studio.
dataSelf-hosted telemetry is stored in ClickHouse, application state and configuration in PostgreSQL, and cache, queues, and sessions in Redis.
vs DatadogIt covers many adjacent jobs, but its self-hosted stack is far heavier to run and its integration depth and polish trail Datadog's mature managed platform.
setupThe recommended self-hosted footprint is large and production requires secrets, TLS, backups, database care, and frequent upgrades rather than a single lightweight monitor.
facts verified 2026-08-14
last updated 2026-08-14 · no votes, no pay-to-list · just what's real
Uptime KumaA good uptime dashboard, not a replacement for metrics, logs, traces and APM.
| tool | license | running it | platforms | stars | active |
|---|---|---|---|---|---|
| OpenObserve | AGPL-3.0 | docker to self-host | web, self-hosted | 20,578 | 2026-08 |
| HyperDX | open source | docker to self-host | web, self-hosted | 9,798 | 2026-08 |
| Coroot | Apache-2.0 | self-host, real ops | web, self-hosted | 7,900 | 2026-08 |
| OneUptime | Apache-2.0 | self-host, real ops | web, self-hosted | 7,400 | 2026-08 |
People still pay for Datadog because monitoring must continue working during the exact outage it reports, which makes independent infrastructure and alert delivery the real product. The recurring cost buys probe geography, clocks, retries, deduplication, sampling, storage, paging, notification delivery, on-call rules, and its own uptime, not just the visible interface. If none of that applies to you, any pick above saves $180 a year.
Is there a free alternative to Datadog?
Yes: OpenObserve, HyperDX, Coroot and 1 more. Every tool on this page is either open source or genuinely free to use long-term: no trials, no crippled tiers.
Should I just build my own Datadog?
Our verdict is NOT REALLY. A consolation build is possible, but the paid product's decisive value sits outside a solo rebuild. For Datadog, collect a bounded set of host metrics and logs into a self-hosted dashboard. The hard boundary is huge integration catalog, global ingestion, correlation, retention, security, and support, plus independent infrastructure and reliable alerting. If you'd rather build, the exact one-shot prompt is free at canivibecodeit.com/datadog.
