Logz.io

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.

Amazon CloudWatch is AWS's native observability service for collecting logs, metrics, traces, and alarms across AWS and hybrid environments. CloudWatch Logs ingests and stores log data with up to 15 months of retention, and in 2026 the service added native OpenTelemetry (OTLP) metric ingestion with PromQL querying. Combined with Application Signals and AWS X-Ray, it provides application performance monitoring for cloud-native workloads, delivered as part of the AWS platform.

Better Stack is an OpenTelemetry-native log management and observability product that bundles log aggregation (Logtail), uptime monitoring, and incident response in one platform. It emphasizes fast setup and low cost, using a collector that can instrument Kubernetes via eBPF to gather logs, metrics, and traces. It is delivered as SaaS and targets teams that want full-stack visibility and on-call workflows without enterprise-grade pricing.