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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.

Apache Superset is a Data Visualization and Data Exploration Platform

The easy-to-use open source Business Intelligence and Embedded Analytics tool that lets everyone work with data :bar_chart:

DuckDB is an analytical in-process SQL database management system

:hedgehog: PostHog is the leading platform for building self-driving products. Our developer tools – AI observability, analytics, session replay, flags, experiments, error tracking, logs, and more – capture all the context agents need to diagnose problems, uncover opportunities, and ship fixes. Steer it all from Slack, web, desktop, or the MCP.

Delegate anything. It comes back done.

General-purpose AI designed for knowledge workers — creators, strategists, and operators — and individuals seeking AI systems they can truly control to help them get work done, with full flexibility to extend and deploy anywhere (VPC, on-prem, or cloud).

Umami is a privacy-first analytics platform. Traffic, campaigns, behavior, conversions, and revenue in one place — no cookies, no surveillance, self-hosted or in the cloud.

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

Make Your Company Data Driven. Connect to any data source, easily visualize, dashboard and share your data.

Open source, privacy-first web analytics. Lightweight, cookie-free Google Analytics alternative. Self-hosted or cloud.

A time-series database for high-performance real-time analytics packaged as a Postgres extension

Open source observability platform for logs, metrics, traces, RUM, Session replay, pipelines, SLO and LLM observability. A sophisticated, simple and highly performant alternative to Datadog, Splunk, and Elasticsearch with 140x lower storage costs and single binary deployment.

Empowering People Ethically 🚀 — Matomo is hiring! Join us → https://matomo.org/jobs Matomo is the leading open-source alternative to Google Analytics, giving you complete control and built-in privacy. Easily collect, visualise, and analyse data from websites & apps. Star us on GitHub ⭐️ – Pull Requests welcome!

GoAccess is a real-time web log analyzer and interactive viewer that runs in a terminal in *nix systems or through your browser.

📊 Cube Core is open-source semantic layer for AI, BI and embedded analytics

The best free and open-source automated time tracker. Cross-platform, extensible, privacy-focused.

An orchestration platform for the development, production, and observation of data assets.

Relocate resource intensive third-party scripts off of the main thread and into a web worker. 🎉

🔎 Open source distributed and RESTful search engine.

dbt enables data analysts and engineers to transform their data using the same practices that software engineers use to build applications.

🐸 Rybbit - open-source and privacy-friendly alternative to Google Analytics that is 10x more intuitive.

Session replay, cobrowsing and product analytics you can self-host. Best for reproducing issues and iterating on your product.

Open Source Metering and Usage Based Billing API ⭐️ Consumption tracking, Subscription management, Pricing iterations, Payment orchestration & Revenue analytics

Modin: Scale your Pandas workflows by changing a single line of code

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

One Postgres for your application data, full-text search, vector retrieval, and aggregations. Home of the pg_search extension.

An open-source storage framework that enables building a Lakehouse architecture with compute engines including Spark, PrestoDB, Flink, Trino, and Hive and APIs

Real-time Claude Code usage monitor with predictions and warnings

A collection of libraries to optimise AI model performances