Best Open Source Alternatives to Lightstep

SigNoz is an open-source APM replacing Datadog with OpenTelemetry-native metrics, traces, and logs stored in a self-hosted ClickHouse database.

vs Lightstep: a free, open-source option you fully control, licensed MIT.

OpenTelemetry Collector is an open-source telemetry proxy replacing proprietary APM forwarders with vendor-neutral trace, metric, and log routing.

vs Lightstep: a free, open-source option you fully control, licensed Apache-2.0.

Uptrace is an open-source APM backend ingesting OpenTelemetry traces, metrics, and logs into ClickHouse to replace costly per-host Datadog licensing.

vs Lightstep: a free, open-source option you fully control, licensed AGPL-3.0.