Open-source alternatives to Datadog
6 self-hostable open-source projects that replace Datadog, ranked by computed health score with real self-hosting cost. Save up to $130/yr per seat by self-hosting on a $4.13/mo VPS.
Why people leave Datadog
- Per-host + per-feature pricing stacks aggressively
- Log ingestion fees compound fast at scale
- Custom-metric pricing surprises during traffic spikes
- Vendor lock-in across logs, metrics, traces
Grafana + Prometheus + Loki + Tempo give the same dashboards + metrics + logs + traces on infra you already pay for.
The 6 alternatives, ranked by health
Health score is a 6-dimension composite. See methodology for formula and weights.
The Prometheus monitoring system and time series database.
A high-performance observability data pipeline.
OpenObserve is an open-source observability platform for logs, metrics, traces, and frontend monitoring. A cost-effective alternative to Datadog, Splunk, and Elasticsearch with 140x lower storage costs and single binary deployment.
Cloud-native search engine for observability. An open-source alternative to Datadog, Elasticsearch, Loki, and Tempo.
Automatically add Trace Spans to Go functions
A Model Context Protocol (MCP) server that enables AI assistants to efficiently filter and analyze Cloud Platform logs by specific prefixes and patterns.
Cost comparison vs Datadog
Self-hosting cost on cheapest plan meeting requirements vs Datadog entry tier ($15/mo).
| Project | Self-host /mo | Datadog /mo | Save /yr | |
|---|---|---|---|---|
| prometheus | $4.13 | $15+ | $130 | Deploy → |
| vector | $4.13 | $15+ | $130 | Deploy → |
| openobserve | $4.13 | $15+ | $130 | Deploy → |
| quickwit | $4.13 | $15+ | $130 | Deploy → |
| go-instrument | $4.13 | $15+ | $130 | Deploy → |
| mcp-server-logs-sieve | $4.13 | $15+ | $130 | Deploy → |
Pick your alternative
Most operators land on prometheus (top health score in this category; cheapest VPS path is prometheus on hetzner for $4.13/mo).
Data refreshed daily. Pricing for Datadog sourced from official site.