
Fluentd
Log Management
Open source data collector for unified logging layer that structures data as JSON for downstream analysis and storage.
Future of SoftwareStart Survey

Log Management
Open source data collector for unified logging layer that structures data as JSON for downstream analysis and storage.

Monitoring & Observability
SigNoz is an open-source APM and observability platform providing traces, metrics, and logs in a single pane of glass as a self-hosted alternative to Datadog and New Relic.

Log Management
Mezmo provides a telemetry pipeline platform that helps organizations control, route, and optimize their observability data including logs, metrics, and traces.
PriceUsage-based

Security Information and Event Management (Expanded)
Open source log management platform for collecting, indexing, and analyzing log data with powerful search and dashboarding.
Price$1,250+ / month

SIEM
Open-source security platform providing intrusion detection, vulnerability detection, and server monitoring with SIEM integration.

Log Management
Logtail by Better Stack provides fast, affordable log management with live tail, search, dashboards, and alerting designed for developers and SRE teams.
PriceUsage-based

Log Analytics Platforms
Open source cloud-native log observability engine built on object storage for cost-effective log management.
PriceUsage-based
Log Analytics Platforms
VictoriaMetrics' open-source log analytics database built for efficiency at petabyte scale.

Observability Platforms
Grafana is the open observability platform for dashboards, metrics, logs, and traces — compose data from anywhere into one operational view.
Price$19+ / month
Starting price: above the category median.Monitoring & Observability
Highlight is an open-source full-stack monitoring platform combining session replay, error monitoring, and log management for modern web applications.