Self-hosted monitoring, Grafana, Netdata, and the open-source observability stack
Datadog, New Relic, and Grafana Cloud all charge per host or per metric. Self-hosted Grafana + Prometheus + Loki gives the same dashboards on infra you already own.
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.
Enterprise-ready, Git native feature management solution
Enterprise-ready, Git native feature management solution
The Prometheus monitoring system and time series database.
Your window into all of your data
Prefect is a workflow orchestration framework for building resilient data pipelines in Python.
CNCF Jaeger, a Distributed Tracing Platform
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.
The open-source LLMOps platform: prompt playground, prompt management, LLM evaluation, and LLM observability all in one place.
An opinionated GoLang framework for accelerated microservice development. Built in support for databases and observability.
Open-source cron job and background task monitoring service, written in Python & Django
Fancy stream processing made operationally mundane
Cloud-native search engine for observability. An open-source alternative to Datadog, Elasticsearch, Loki, and Tempo.
AI Agent Engineering Platform built on an Open Source TypeScript AI Agent Framework
A self-hosted data logger for your Tesla [main maintainer=@JakobLichterfeld]
The Rust OpenTelemetry implementation
Scalable datastore for metrics, events, and real-time analytics
A powerful framework for faster, easier, and more efficient project development.
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
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.