Grafana LGTM Stack — #2 Alternative to Datadog
Industry-standard open observability: Loki (Logs), Grafana, Tempo (Traces), Mimir (Metrics)
Modular open-source observability standard backed by object storage (S3/GCS) so terabytes of logs and traces cost pennies without indexing every field upfront.
License: AGPL-3.0 · Pricing: Open Core · Compare all Datadog alternatives · Official Website