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.

SigNoz is an open-source observability platform native to OpenTelemetry with logs, traces and metrics in a single application. An open-source alternative to DataDog, NewRelic, etc. 🔥 🖥. 👉 Open source Application Performance Monitoring (APM) & Observability tool

🪢 Open source LLM engineering platform: LLM Observability, metrics, evals, prompt management, playground, datasets. Integrates with OpenTelemetry, Langchain, OpenAI SDK, LiteLLM, and more. 🍊YC W23

highlight.io: The open source, full-stack monitoring platform. Error monitoring, session replay, logging, distributed tracing, and more.

Resolve production issues, fast. An open source observability platform unifying session replays, logs, metrics, traces and errors powered by Clickhouse and OpenTelemetry.

🏓 The open-source synthetic monitoring platform 🏓

OneUptime is the complete open-source observability platform.

🧊 Open source LLM observability platform. One line of code to monitor, evaluate, and experiment. YC W23 🍓

A delightful way to building a RESTful API with NodeJs & TypeScript by @w3tecch

A Manageable, Measurable and Traceable Node.js Application Manager represented by Alibaba powered by TypeScript

OpenTelemetry JavaScript Client

A simple, modern server dashboard, primarily used by smaller private servers

🕹️ Open-source, developer-first LLMOps platform designed to streamline prompt design, version management, instant delivery, collaboration, troubleshooting, observability and more.

Alert dashboard for Prometheus Alertmanager

Zabbix plugin for Grafana dashboard

🕵️‍♀️ Validate schema, get schema change notifications, validate operations, find breaking changes, look for similar types, schema coverage

Laminar - open-source all-in-one platform for engineering AI products. Crate data flywheel for you AI app. Traces, Evals, Datasets, Labels. YC S24.

Metlo is an open-source API security platform.

Open source monitoring and visualization UI for the TICK stack

📱⚡️ Lighthouse for Mobile - audits your app and gives a performance score to your Android apps (native, React Native, Flutter..). Measure performance on CLI, E2E tests, CI...