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Migration guide · Observability & Monitoring

The 4 best Datadog alternatives

Datadog is a hosted observability and monitoring platform that pulls infrastructure metrics, application performance monitoring (APM) traces, and log management into one dashboard. Its agent runs on your servers and ships telemetry to Datadog's cloud, where it is billed per host and separately per feature — infrastructure, APM, log ingestion and retention, custom metrics, synthetics, and security monitoring each carry their own line item.

90
Bottom line

For most teams the best free, open-source Datadog alternative is Grafana + Prometheus — the de-facto open monitoring standard for metrics and dashboards, with Loki and Tempo adding logs and traces. If you want traces, metrics, and logs in a single app rather than an assembled stack, SigNoz is the closest OpenTelemetry-native, one-app replacement. Both remove per-host SaaS billing; the trade-off is that you run the stack yourself.

Jump to the full comparison →

The cost

Per-host and per-feature billing that scales quickly: infrastructure monitoring starts around $15–23 per host/month, APM and log management are billed on top (logs per-GB ingested and per-million events retained), and custom metrics add further cost — large fleets routinely see five- and six-figure annual bills.

Is Datadog free? The exact limits

Why people consider an alternative

The single biggest reason teams look for a Datadog alternative is the bill: costs grow unpredictably with your host count, log volume, and custom-metric cardinality, and a spike in traffic can turn into a surprise invoice. On top of that, all of your telemetry lives in someone else's cloud on their pricing terms. Self-hosted, OpenTelemetry-native stacks give you the same metrics, traces, and logs at hardware cost — you trade a monthly bill for running and maintaining the stack yourself.

When Datadog is still the right call

One integrated pane for metrics, logs, traces, APM, and security — with turnkey setup, managed scaling, and vendor support — is genuinely unmatched. If you would rather pay than run and maintain your own observability stack, or you lack the platform team to operate one, Datadog earns its price for many organizations.

The verdict — at a glance

AlternativeLicenseSelf-hostPricingSovereignty
Grafana + Prometheus★AGPL-3.0 (Grafana) / Apache-2.0 (Prometheus)YesFree / self-host90
SigNozMIT (core)YesFree / self-host; optional managed cloud88
ZabbixAGPL-3.0YesFree / self-host (optional paid support and cloud from Zabbix)86
NetdataGPL-3.0YesFree / self-host; optional paid cloud85
90
Macrostack's top pick

Grafana + Prometheus

The open-source observability standard.

Which one fits your situation?

There is no single best answer — it depends on what you are actually trying to do.

Just tell me the best Datadog alternative

Grafana + Prometheus90

Our top pick — the highest Sovereignty Score at 90, and the one we would choose ourselves.

Grafana + Prometheus vs SigNoz →

I have no budget — is there a genuinely free one?

SigNoz88

Open source under MIT (core). Free / self-host; optional managed cloud

SigNoz vs Grafana + Prometheus →

I want to self-host it and own the data

Zabbix86

Self-hostable, so your data stays on your own server. Free / self-host (optional paid support and cloud from Zabbix)

Zabbix vs Grafana + Prometheus →

It is just me — I do not want to run a server

Netdata85

Offers a hosted option, so you can start without infrastructure. Free / self-host; optional paid cloud

Netdata vs Grafana + Prometheus →

Every alternative, compared

#1★ TOP PICK

Grafana + Prometheus

The open-source observability standard.

90
OPEN SOURCEAGPL-3.0 (Grafana) / Apache-2.0 (Prometheus)SELF-HOSTLOCAL-FIRST 75kupdated 1 mo ago

Prometheus scrapes and stores metrics; Grafana visualizes them (and logs and traces via Loki and Tempo). Together they are the de-facto open-source monitoring stack, fully self-hostable.

Strengths

  • +Industry-standard, huge ecosystem
  • +Metrics, logs, and traces via the same UI
  • +Enormous community and dashboards

Trade-offs

  • −You assemble and operate the stack
  • −Steeper initial setup than a SaaS agent
Free / self-host
WebsiteSourceDocs
#2

SigNoz

An OpenTelemetry-native, single-app Datadog alternative.

88
OPEN SOURCEMIT (core)SELF-HOSTLOCAL-FIRST 29kupdated 1 mo ago

SigNoz brings metrics, traces, and logs into one open-source application built natively on OpenTelemetry, so you get APM-style visibility without per-host SaaS pricing.

Strengths

  • +One app for traces, metrics, and logs
  • +OpenTelemetry-native
  • +Purpose-built as a Datadog replacement

Trade-offs

  • −Younger ecosystem than Grafana
  • −Self-hosting needs a datastore to operate
Free / self-host; optional managed cloud
WebsiteSourceDocs
#3

Zabbix

Mature, enterprise-grade open-source monitoring you fully own.

86
OPEN SOURCEAGPL-3.0SELF-HOSTLOCAL-FIRST

Zabbix has been an open-source monitoring workhorse since 2001, covering infrastructure, network, server, application, and cloud monitoring with alerting, dashboards, and auto-discovery built in. It is a single self-hosted platform rather than an assembled stack, which makes it a strong Datadog alternative for teams that want broad coverage and mature alerting without per-host SaaS billing.

Strengths

  • +Extremely mature and battle-tested (since 2001)
  • +Broad coverage — infra, network, servers, apps, cloud in one platform
  • +Powerful alerting and auto-discovery out of the box
  • +No per-host or per-metric billing when self-hosted

Trade-offs

  • −Interface and setup feel more traditional than newer tools
  • −Not OpenTelemetry-native — less focused on distributed tracing/APM
  • −Initial configuration has a learning curve
Free / self-host (optional paid support and cloud from Zabbix)
WebsiteSourceDocs
#4

Netdata

Real-time, per-second monitoring with zero-config auto-discovery.

85
OPEN SOURCEGPL-3.0SELF-HOSTLOCAL-FIRST 80kupdated 1 mo ago

Netdata delivers high-resolution, real-time metrics with automatic discovery and minimal configuration, ideal for fast, granular infrastructure visibility on your own machines.

Strengths

  • +Per-second resolution out of the box
  • +Auto-discovers most services
  • +Very low setup effort

Trade-offs

  • −Less of a long-term query store than Prometheus
  • −Best paired with other tools for logs/traces
Free / self-host; optional paid cloud
WebsiteSourceDocs

Questions people ask

▸ What is the best open-source Datadog alternative?

For metrics and dashboards, Grafana + Prometheus is the de-facto open-source standard, extended with Loki (logs) and Tempo (traces) for full coverage. If you would rather have traces, metrics, and logs in a single application, SigNoz is the closest OpenTelemetry-native, one-app replacement. Netdata is best for instant, per-second infrastructure monitoring, and Zabbix for mature, broad-coverage enterprise monitoring.

▸ Is there a free Datadog alternative?

Yes. Grafana + Prometheus, SigNoz, Netdata, and Zabbix are all free and open-source when you self-host — there is no per-host or per-GB ingest billing. Your only cost is the hardware or VPS to run them plus the time to operate the stack. Several also offer an optional paid managed cloud if you would rather not self-host.

▸ How much can a self-hosted stack save versus Datadog?

It depends on your fleet size and log volume, but the saving is usually large because Datadog bills per host and per feature (APM, logs, custom metrics) separately, while a self-hosted stack costs only the server it runs on. Teams with dozens of hosts or high log volume frequently cut observability spend from five or six figures a year down to hardware plus operating time.

▸ What is the best self-hosted APM alternative to Datadog?

SigNoz is the strongest single-app choice — it is built natively on OpenTelemetry and brings distributed tracing (APM), metrics, and logs into one open-source tool designed specifically to replace SaaS APM. The Grafana stack with Tempo can match it on breadth but takes more assembly.

▸ Do these alternatives work with OpenTelemetry?

SigNoz is OpenTelemetry-native end to end, and Grafana's stack (Prometheus, Tempo, Loki) has first-class OpenTelemetry support. Instrumenting your apps with OpenTelemetry also means you are not locked to a proprietary agent, so you can switch backends later without re-instrumenting.

▸ What is the catch with leaving Datadog?

You take on operating the observability stack yourself — installing, scaling, securing, and backing up the datastore behind it. Datadog's value is that it removes that operational burden and gives you one supported pane of glass. The alternatives trade a predictable-effort operating cost for the removal of an unpredictable, fleet-scaling bill.

Compare them head-to-head

Grafana + Prometheus vs SigNoz→Grafana + Prometheus vs Zabbix→Grafana + Prometheus vs Netdata→SigNoz vs Zabbix→SigNoz vs Netdata→Zabbix vs Netdata→

Related comparisons

Alternatives to New Relic3 optionsAlternatives to OpenAI API (ChatGPT)8 optionsAlternatives to Notion4 optionsAlternatives to 1Password4 optionsAlternatives to Google Analytics4 optionsAlternatives to Slack3 options

Entry last verified 2026-07-12. Licenses and pricing change — spotted something out of date? That's a correction we want.

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