Best observability tools
A curated list of tools tagged observability — free to browse, no sign-up required.
Baselime
Observability for serverless
Dash0
OpenTelemetry-native observability
Hyperdx
Open-source observability in one place
Freeplay
Test, evaluate, and monitor LLM features
SigNoz
Open-source observability platform
Axiom
Logging and observability at scale
Langfuse
Open-source LLM engineering platform
Helicone
Open-source observability for LLM apps
Sentry
Application monitoring and error tracking
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