Jaeger vs Tracetest

Jaeger is a free, open-source distributed tracing platform for monitoring complex systems and investigating performance problems. It helps teams locate bottlenecks, examine root causes, and map dependencies between services. Jaeger receives OpenTelemetry Protocol data and accepts Zipkin spans over HTTP in Thrift, JSON v1/v2, and Protobuf formats. Its UI includes System Architecture and Deep Dependency Graph views, while Service Performance Monitoring turns traces into aggregate metrics and time-series charts. Sampling supports head-based configurations, including centralized static or adaptive settings, and tail-based sampling. Cassandra, Elasticsearch, and OpenSearch are supported distributed storage backends; ClickHouse is experimental behind a feature gate. Jaeger v2 ships as binaries and container images, with an all-in-one mode using transient in-memory storage. It is self-hosted, so infrastructure determines capacity and scale. Jaeger v1 reached end of life on December 31, 2025.

Tracetest is an open-source tool for integration and end-to-end testing that uses OpenTelemetry traces. Tests can check service responses, trace information, span timing, and side effects in distributed systems. You can reuse Cypress, k6, Playwright, or Postman tests, or trigger tests through HTTP, gRPC, and Kafka. Trace views can identify instrumentation problems, missing attributes, naming inconsistencies, and possible exposure of sensitive data such as passwords or API keys. The Tracetest CLI runs tests in CI/CD pipelines, with YAML definitions suited to source control. Test suites can also operate as scheduled synthetic monitors and send webhook alerts. Listed integrations include Datadog, Grafana Tempo, Jaeger, Honeycomb, GitHub Actions, Cypress, Playwright, and k6. Tracetest Core runs as a Docker container for local environments and is described as unsuitable for production. The open-source version remains available for free after commercial Cloud and Enterprise offerings ended.