Apache SkyWalking
Apache APM platform for service topology, distributed tracing, metrics, logs, and cloud-native diagnostics.
New-Relic
Coroot
eBPF-based APM for Kubernetes. Zero-instrumentation service maps and SLO dashboards.
Grafana
The de-facto open-source dashboard layer. Plug into Prometheus, Loki, Tempo, InfluxDB — one pane of glass.
Grafana Mimir
Grafana Labs' horizontally scalable, multi-tenant Prometheus-compatible long-term metrics store.
Grafana Tempo
High-scale distributed tracing backend. Stores traces in cheap object storage (S3, GCS).
HyperDX
Open-source Datadog alternative that correlates logs, metrics, traces, and session replays in one UI.
Jaeger
The CNCF graduated distributed tracing system, originally from Uber. The default open-source choice for traces.
Netdata
Real-time per-second metrics with instant auto-discovery. Dashboards out-of-box, zero config.
Parseable
Rust-based log lake that writes Parquet to S3-compatible object storage. Compute-storage separated, indexless by design.
Prometheus
The CNCF-graduated, pull-based metrics store. Industry default for self-hosted metrics.
Quickwit
Rust search engine for logs and traces with sub-second queries directly against S3-compatible object storage.
Robusta
Kubernetes-native observability that turns Prometheus alerts into actionable, context-enriched events with auto-remediation playbooks.
SigNoz
Full-stack, OpenTelemetry-native APM + logs + metrics. The closest single-tool Datadog alternative.
Thanos
CNCF-graduated long-term storage and global query layer for Prometheus, backed by object storage.
VictoriaMetrics
Prometheus-compatible TSDB optimized for ingestion rate and storage cost. Single-binary by default, cluster mode for scale.
Zipkin
The original open-source distributed tracing system, born at Twitter in 2012. Single-binary simplicity, still maintained.