#1
Open-source, agent-based monitoring platform delivering per-second metrics, edge ML anomaly detection, tiered time-series storage and centralized cloud UI.
80.3k stars6.6k forksGPL-3.0last commit Actively maintained
12 self-hosted Datadog alternatives
Cloud monitoring and observability platform that collects metrics, logs, traces and security signals from infrastructure and applications. Provides dashboards, alerts, APM, log management, synthetic monitoring and analytics for incident response.
Alternatives to Datadog
#2
Grafana is an open source observability and data visualization platform for querying, graphing, and alerting on metrics, logs, and traces across many data sources.
76.4k stars14.6k forksAGPL-3.0last commit Actively maintained
Prometheus is an open-source monitoring and time-series database for collecting metrics, querying with PromQL, and alerting on system and application health.
65.8k stars10.8k forksApache-2.0last commit Actively maintained
#4
SigNoz is an open-source platform that collects and correlates logs, metrics, and traces using OpenTelemetry for unified observability.
31.9k stars2.4k forkslast commit Actively maintained
Grafana Loki is a Prometheus-inspired log aggregation system that indexes labels (not log contents) for cost-effective storage and fast querying, with Grafana integration.
28.8k stars4.1k forksAGPL-3.0last commit Actively maintained
Fast, resource-efficient time series database compatible with Prometheus and Grafana, for scalable monitoring and long-term metrics storage.
17.6k stars1.7k forksApache-2.0last commit Actively maintained
#7
Real-time monitoring dashboard for Proxmox, Docker/Podman, and Kubernetes with smart alerts, agent auto-discovery, metrics history, and optional AI insights.
6.6k stars265 forksMITlast commit Actively maintained
Parseable ingests, analyzes, and extracts insights from MELT telemetry data with predictive analytics and a unified SQL/NL querying interface.
2.4k stars171 forksAGPL-3.0last commit Actively maintained
#9
Kubetail is a real-time Kubernetes logging dashboard and CLI that merges multi-container workload logs into a single timeline, running on desktop or inside your cluster.
1.8k stars125 forksApache-2.0last commit Actively maintained
#10
Lightweight web UI and REST control plane for exploring, inspecting, and managing Apache Iceberg catalogs and tables with Docker deployment and engine integrations.
474 stars31 forksApache-2.0last commit Slowing down
#11
Lightweight Prometheus exporter that exposes metrics from the *arr suite (Sonarr, Radarr, Lidarr, etc.) for monitoring and Grafana dashboards.
417 stars18 forksGPL-3.0last commit Actively maintained
#12
Open-source error tracking, performance monitoring and uptime checks compatible with Sentry SDKs; available self-hosted or as a hosted SaaS.
Activity unknown
What replacing Datadog actually involves
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 10 of 12 shipped a commit in the last six months. Licences in this list: GPL-3.0, AGPL-3.0, Apache-2.0, MIT. In exchange you take on hosting, backups and updates yourself.
Browse everything in Monitoring & Observability.
