Self-hosted uptime monitoring: open-source Pingdom and UptimeRobot alternatives
Pingdom is $15-369/mo. UptimeRobot Pro is $7-99/mo. Self-hosted Uptime Kuma gives the same beautiful dashboards, status pages, and Discord/Slack alerts on a $4/mo VPS forever, no monitor caps.
The 24 picks, ranked by health
Health score is a 6-dimension composite. See methodology.
The fastest path to AI-powered full stack observability, even for lean teams.
The Prometheus monitoring system and time series database.
A high-performance observability data pipeline.
VictoriaMetrics: fast, cost-effective monitoring solution and time series database
Open source LLM engineering platform: LLM Observability, metrics, evals, prompt management, playground, datasets. Integrates with OpenTelemetry, Langchain, OpenAI SDK, LiteLLM, and more. YC W23
OpenObserve is an open-source observability platform for logs, metrics, traces, and frontend monitoring. A cost-effective alternative to Datadog, Splunk, and Elasticsearch with 140x lower storage costs and single binary deployment.
The open-source Observability 2.0 database. One engine for metrics, logs, and traces, replacing Prometheus, Loki & ES.
Open-source cron job and background task monitoring service, written in Python & Django
Scalable datastore for metrics, events, and real-time analytics
Best and simplest tool for website change detection, web page monitoring, and website change alerts. Perfect for tracking content changes, price drops, restock alerts, and website defacement monitoring, all for free or enjoy our SaaS plan!
Automated developer-oriented status page with alerting and incident support
A self-hosted dashboard that puts all your feeds in one place
Yet another cross-platform graphical process/system monitor.
Create agents that monitor and act on your behalf. Your agents are standing by!
一款面向泛前端产品研发全生命周期的效率平台。
Linux Kernel Manager and Activity Monitor
LinDB is a scalable, high performance, high availability distributed time series database.
π RuView turns commodity WiFi signals into real-time spatial intelligence, vital sign monitoring, and presence detection, all without a single pixel of video.
Top-like interface for container metrics
Cross-platform lib for process and system monitoring in Python
Instant Kubernetes-Native Application Observability
A simple, standalone, and lightweight tool that can do health/status checking, written in Go.
Lightweight network IP scanner written in Go. With notifications, history, export to Grafana
HOMER - 100% Open-Source SIP, VoIP, RTC Packet Capture & Monitoring
Specifically replacing
These categories on ossreplace cover the SaaS in this space.
Ready to self-host?
Most operators land on netdata (top health) and run it on hetzner for around $4.13/mo.