A set of beautifully-designed, accessible components and a code distribution platform. Works with your favorite frameworks. Open Source. Open Code.

The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.

A utility-first CSS framework for rapid UI development.

JavaScript API for Chrome and Firefox

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 mo…

🚀 Strapi is the leading open-source headless CMS. It’s 100% JavaScript/TypeScript, fully customizable, and developer-first.

There can be more than Notion and Miro. AFFiNE(pronounced [ə‘fain]) is a next-gen knowledge base that brings planning, sorting and creating all together. Privacy first, open-source, customizable an…

Apache ECharts is a powerful, interactive charting and data visualization library for browser

Easy to maintain open source documentation websites.

Realtime application framework (Node.JS server)

Quill is a modern WYSIWYG editor built for compatibility and extensibility

✨ Innovative and open-source visualization application that transforms various data formats, such as JSON, YAML, XML and CSV into interactive graphs.

TypeScript-first schema validation with static type inference

Payload is the open-source, fullstack Next.js framework, giving you instant backend superpowers. Get a full TypeScript backend and admin panel instantly. Use Payload as a headless CMS or for buildi…

Making Docker and Kubernetes management easy.

⏳ Modern JavaScript date utility library ⌛️

🕵️‍♂️ All-in-one OSINT tool for analysing any website

The Monorepo Platform that amplifies both developers and AI agents. Nx optimizes your builds, scales your CI, and fixes failed PRs automatically. Ship in half the time.

📘 OpenAPI/Swagger-generated API Reference Documentation

The modern link attribution platform. Loved by world-class marketing teams like Framer, Perplexity, Superhuman, Twilio, Buffer and more.

A fast, local first, reactive Database for JavaScript Applications https://rxdb.info/

An open source application built using the new router, server components and everything new in Next.js 13.

Visualize Your Ideas With Code

The modern toolkit for building drag and drop interfaces

React components to build charts and dashboards

Create badass, fluid and smooth transitions between your website’s pages

Interactive, thoroughly customizable maps in the browser, powered by vector tiles and WebGL

JavaScript framework for visual programming

The superpowered headless CMS for Node.js — built with GraphQL and React

coss.com is the new holding company of cal.com, the pioneers of open source scheduling infrastructure and cal.com continues to be the 'google search' of our alphabet.