Self-hostable open-source Datadog alternatives
Metrics, logs and traces SaaS — famously expensive at scale. Self-hosted observability caps cost and keeps telemetry in-house.
Among 3 self-hostable open-source Datadog alternatives tracked here, Uptime Kuma currently leads on the Self-Host Health Score (100/100, 88k★, last commit today). For a Raspberry Pi or a low-RAM VPS, Uptime Kuma is the lightest at a documented ~256 MB (SQLite). 2 of them publish official ARM64 images (Raspberry Pi / Apple Silicon). 3 offer a one-click deploy (e.g. PikaPods, Render, Railway, DigitalOcean).
| Tool | Health | Stars | Database | Min RAM | ARM/Pi | One-click | Updated |
|---|---|---|---|---|---|---|---|
| Uptime Kuma
↗
Self-hosted uptime/status monitoring with a delightful UI. |
100 Thriving |
88k★ JavaScript |
SQLite | 256 MB | ✓ ● | PikaPods ↗ | today MIT |
| SigNoz
↗
Open-source Datadog alternative: APM, logs, metrics on OpenTelemetry. |
97 Thriving |
27k★ TypeScript |
ClickHouse | 4096 MB | ✗ ● | Render ↗ Railway ↗ DigitalOcean ↗ Coolify | today |
| OpenObserve
↗
Petabyte-scale logs/metrics/traces with 140x lower storage cost. |
94 Thriving |
19k★ TypeScript |
none | 512 MB | ✓ ● | Railway ↗ | today AGPL-3.0 |
FAQ
What is the best self-hostable Datadog alternative?
By the live Self-Host Health Score, Uptime Kuma ranks highest (100/100).
Which open-source Datadog alternatives run on a Raspberry Pi?
Those publishing official ARM64 images: Uptime Kuma, OpenObserve.
Which is the lightest on RAM?
Uptime Kuma, at about 256 MB.