* [Tempo v3.0.0](https://github.com/grafana/tempo) – High-scale distributed tracing backend that integrates with Grafana, Prometheus, and Loki.

* [SigNoz v0.126.0](https://github.com/SigNoz/signoz) – Observability platform that consolidates logs, metrics, and traces for effective application monitoring and troubleshooting.

* [Datadog Trace Client v2.34.0](https://github.com/DataDog/dd-trace-rb) – Client library for tracing and monitoring Ruby applications.

* [OpenTelemetry Ruby opentelemetry-semant...](https://github.com/open-telemetry/opentelemetry-ruby) – Ruby client for OpenTelemetry that provides API and SDK functionality.

* [OpenTelemetry Ruby Contrib opentelemetry-resour...](https://github.com/open-telemetry/opentelemetry-ruby-contrib) – Instrumentation libraries for popular Ruby gems to facilitate easy integration with OpenTelemetry.