Honeycomb.io

Datadog is a unified cloud observability platform in which log management sits alongside infrastructure monitoring, APM, real-user monitoring, and security as separately billed modules. Logs use an ingest-then-index model, letting teams collect everything cheaply and index only what they need, with retention tiers driving cost. With 1,000+ integrations and a single SaaS interface, it is widely adopted by enterprise DevOps teams needing full-stack visibility.

Mezmo (formerly LogDNA) is a telemetry pipeline and log management platform for ingesting, parsing, enriching, and routing high-volume logs, metrics, and traces before they reach downstream storage or analytics. Data can be collected through Mezmo Edge, OpenTelemetry, or direct integrations, with pipeline controls that reduce downstream cost and improve query performance. It is HIPAA-compliant, delivered as SaaS, and oriented toward organizations managing large, cost-sensitive log streams.

Grafana Loki is a horizontally scalable log aggregation system that indexes only metadata labels rather than full log content, keeping storage costs low by writing to object storage. It integrates tightly with Grafana dashboards and the broader LGTM stack (Loki, Grafana, Tempo, Mimir) for logs, metrics, and traces. Loki is free and open source for self-hosting, and is also available as a managed service through Grafana Cloud with a free tier and usage-based paid plans.