New Relic

New Relic is a unified observability platform that collects telemetry from across an entire technology stack into one data store and provides full-stack analysis tools on top of it. The platform's organising principle is that metrics, events, logs and traces should not live in separate products — a performance problem is rarely confined to one layer, and correlating across four disconnected tools during an incident wastes the time that matters most. New Relic ingests all four telemetry types into a single database queryable through its own query language, so an engineer can move from an alert, to the affected service, to the specific trace, to the log lines emitted during that trace, without changing context or re-authenticating.

Coverage spans application performance monitoring with code-level visibility across most major languages, infrastructure and host monitoring, Kubernetes and container observability, log management, browser and mobile real user monitoring, synthetic checks that test critical journeys from external locations, database and serverless monitoring, and network performance. Distributed tracing follows requests across microservices boundaries, which is essential in architectures where no single service holds the full picture. Machine learning underpins anomaly detection and incident intelligence, correlating related alerts into a single issue and suggesting probable causes rather than paging four teams simultaneously. Error tracking groups exceptions by fingerprint and links them to the deployments that introduced them, and change tracking correlates performance shifts with releases. Dashboards are fully customisable and shareable, and an extensive catalogue of quickstart integrations covers cloud providers, open-source components and third-party services. The commercial model is unusual and deliberate: a generous permanently free tier includes a substantial monthly data allowance and one full user, with charging based on data ingested and the number of full platform users rather than per host or per application, which suits teams with many small services. A free version and free trial are both available.