Open source. Open possibilities.

rrHog is an open-source, self-hosted web analytics and session replay platform built on rrweb, using FastAPI, NATS JetStream, ClickHouse, Postgres, and Next.js for reliable, async ingestion and fast querying.

Countly Web SDK is a JavaScript analytics library for websites and web applications, enabling tracking of user behavior, events, profiles, crashes, A/B testing, performance monitoring, and feedback widgets, compatible with Countly Lite, Flex, and Enterprise platforms.

Turf is a modular geospatial engine written in JavaScript for spatial analysis, providing tools for GeoJSON data creation and statistical operations.

deck.gl is a GPU-powered visualization framework designed for high-performance rendering of large-scale data sets using WebGL2 and WebGPU.

An interactive analytics and data visualization component designed for large, real-time, and streaming datasets.

A lightweight, privacy‑first JavaScript/TypeScript SDK for tgram‑analytics. Zero dependencies, under 2 KB gzipped, TypeScript‑first, SPA‑ready, respects Do Not Track, supports batching and multi‑value properties.

Flarelytics is a privacy‑focused web‑analytics solution that records how long visitors stay on each page. It runs as a Cloudflare Worker backend with a PlanetScale database and a lightweight browser script. Currently supports a single domain and is intended for self‑hosted deployment.

Flarelytics is a privacy‑focused, self‑hosted web analytics service that measures how long visitors stay on each page. Built with Cloudflare Workers and a MySQL‑compatible database (MongoDB → PlanetScale), it provides a simple script for browsers and a lightweight API backend.

Redash is a browser-based data exploration and visualization tool that allows users to query, visualize, and share data from various SQL and NoSQL sources.

PostHog is an open-source product analytics platform offering event analytics, session replay, feature flags, experiments, error tracking, logs, surveys, data warehouse and AI observability, with a self-hostable hobby deploy and SDKs for many languages.

A 100% client-side tool that reads a Con Edison "Download my data" Green Button CSV and shows, month by month for your actual usage, whether switching from Standard (SC1) to Residential Time-of-Use would lower your bill. Nothing is uploaded; all computation happens in the browser.

Azoth is a privacy‑first, self‑hosted web analytics platform built on Cloudflare Workers and Analytics Engine. It ships a tiny (~1.4 KB) tracker that uses sendBeacon, stores no cookies or PII, and provides a React dashboard for querying pageviews.

A comprehensive numerical and scientific computing standard library for JavaScript and TypeScript, designed for use in browsers and Node.js.