Best observability tools

A curated list of tools tagged observability — free to browse, no sign-up required.

Noveum

Test, debug, and improve production AI agents
Developer Tools▲ 0

Baselime

Observability for serverless
Developer Tools▲ 45

Dash0

OpenTelemetry-native observability
Developer Tools▲ 51

Hyperdx

Open-source observability in one place
Developer Tools▲ 60

Freeplay

Test, evaluate, and monitor LLM features
AI▲ 27

SigNoz

Open-source observability platform
Developer Tools▲ 34

Axiom

Logging and observability at scale
Developer Tools▲ 34

Langfuse

Open-source LLM engineering platform
AI▲ 50

Helicone

Open-source observability for LLM apps
AI▲ 56

Sentry

Application monitoring and error tracking
Developer Tools▲ 9

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