Open-source monitoring & uptime
Replacing: Datadog, UptimeRobot
| Project | What it is | Stars | Last release | Replaces |
|---|---|---|---|---|
| Uptime Kuma Active MIT | A fancy self-hosted monitoring tool. | 93.1k | Oct 27, 2026 | UptimeRobot |
| Netdata Active GPL-3.0 | Real-time infrastructure monitoring with per-second metrics, dashboards and alerts. | 81.2k | Oct 23, 2026 | Datadog |
| Grafana Active AGPL-3.0 | The open and composable observability and data visualization platform. Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Postgres and many more. | 77.6k | Oct 27, 2026 | Datadog |
| Prometheus Active Apache-2.0 | The Prometheus monitoring system and time series database. | 66.9k | Oct 28, 2026 | Datadog |
| SigNoz Active Mixed or custom | SigNoz is an open-source, OpenTelemetry-native observability platform for your team and their AI agents. | 32.5k | Oct 29, 2026 | Datadog |
| Gatus Active Apache-2.0 | Automated developer-oriented status page with alerting and incident support. | 12.4k | Oct 28, 2026 | UptimeRobot |
| cState Active MIT | Open source static (serverless) status page. Uses hyperfast Go & Hugo, minimal HTML/CSS/JS, customizable, outstanding browser support (IE8+), preloaded CMS, read-only API, badges & more. | 2.9k | Oct 25, 2026 | UptimeRobot |