#1
Self-hosted status page and uptime monitoring tool with configurable health checks, dashboards, metrics, and alerting for HTTP, TCP, ICMP, and DNS endpoints.
11.6k stars780 forksApache-2.0last commit Actively maintained
10 self-hosted Datadog Synthetics alternatives
Datadog Synthetics is a cloud synthetic monitoring service that runs scripted browser and API tests from global locations to monitor uptime, latency, end-user workflows and API correctness, detect failures or regressions, and trigger alerts.
Alternatives to Datadog Synthetics
Self-hosted monitoring for websites and servers with uptime checks, response-time metrics, incidents, and status pages, plus optional agent-based hardware monitoring.
10.4k stars1.2k forksAGPL-3.0last commit Actively maintained
#3
Self-hosted status page system with built-in monitoring, incident tracking, and customizable public status pages for websites and APIs.
5.1k stars286 forksMITlast commit Actively maintained
SmokePing is an active network monitoring tool that measures latency and packet loss over time, stores results in RRD, and visualizes them via a web UI with alerting.
1.9k stars217 forksGPL-2.0last commit Actively maintained
Open-source, self-hosted uptime monitoring tool for websites, APIs, and infrastructure with notifications, public status pages, and multiple monitor types.
1.2k stars66 forksMITlast commit Actively maintained
#6
Privacy-first, cookie-less open-source web analytics with session analysis, real-user performance monitoring, error tracking and feature flags. Self-hostable or available as managed cloud.
1.1k stars63 forksAGPL-3.0last commit Actively maintained
Notifiarr is a unified client that delivers configurable notifications, health checks, and automation for homelab apps like Plex and the *Arr stack via Discord.
913 stars40 forksMITlast commit Actively maintained
#8
Self-hosted uptime and SSL monitoring with status pages, REST API, Prometheus and OpenTelemetry exporters, per-monitor notifications, and YAML-based configuration.
571 stars34 forksAGPL-3.0last commit Actively maintained
Self-hosted uptime and SSL monitoring with status pages, REST API, Prometheus/OpenTelemetry exporters, per-monitor notifications, and YAML config.
571 stars34 forksAGPL-3.0last commit Actively maintained
#10
Meshping measures per-target ICMP latencies, builds histograms and heatmaps, runs traceroutes with Path MTU discovery, draws SVG network maps, and exposes Prometheus metrics.
165 stars10 forksMITlast commit Actively maintained
What replacing Datadog Synthetics 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 10 shipped a commit in the last six months. Licences in this list: Apache-2.0, AGPL-3.0, MIT, GPL-2.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in Monitoring & Observability.
