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: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.

The Frontend Stack for Agents & Generative UI. React, Angular, Mobile, Slack, and more. Makers of the AG-UI Protocol

🛡️ ⚛️ A simple, scalable, and powerful architecture for building production ready React applications.

The world's most flexible commerce platform for agents and developers

A React Framework for building internal tools, admin panels, dashboards & B2B apps with unmatched flexibility.

SigNoz is an open-source, OpenTelemetry-native observability platform for your team and their AI agents. Get logs, metrics, and traces in one tool with features like APM, distributed tracing, log management, infra monitoring, etc. Combined with SigNoz MCP and a native AI teammate (in SigNoz Cloud) it helps you build more resilient apps.

Scalable datastore for metrics, events, and real-time analytics

A highly customizable homepage (or startpage / application dashboard) with Docker and service API integrations.

🔥 A highly scalable, offline-first foundation with the best developer experience and a focus on performance and best practices.

✌️ A spring physics based React animation library

Build, deploy, and orchestrate AI agents. Sim is the central intelligence layer for your AI workforce.

A frontend Framework for single-page applications on top of REST/GraphQL APIs, using TypeScript, React and Material Design

The Cursor for Designers • An Open-Source AI-First Design tool • Visually build, style, and edit your React App with AI

The AI Toolkit for TypeScript. From the creators of Next.js, the AI SDK is a free open-source library for building AI-powered applications and agents

A modified web browser that helps in responsive web development. A web developer's must have dev-tool.

:love_letter: An extensible desktop mail app built on the modern web. Forks welcome!

Data Apps & Dashboards for Python. No JavaScript Required.

The Markdown-based note-taking app that doesn't suck.

Database diagrams editor that allows you to visualize and design your DB with a single query.

A set of over 6000 free MIT-licensed high-quality SVG icons for you to use in your web projects.

Local, open-source AI app builder for power users ✨ v0 / Lovable / Replit / Bolt alternative 🌟 Star if you like it!

Open source Loom alternative. Beautiful, shareable screen recordings.

Fluent UI web represents a collection of utilities, React components, and web components for building web applications.

A Git-based CMS for Static Site Generators

Radix Primitives is an open-source UI component library for building high-quality, accessible design systems and web apps. Maintained by @workos.

Build the best interview map. The current content includes JS, network, browser related, performance optimization, security, framework, Git, data structure, algorithm, etc.

Streaming music player that finds free music for you

Private AI platform for agents, assistants and enterprise search. Built-in Agent Builder, Deep research, Document analysis, Multi-model support, and API connectivity for agents.

Optimizing compiler for React

This repository is outdated and new Boost Note app is available! We've launched a new Boost Note app which supports real-time collaborative writing. https://github.com/BoostIO/BoostNote-App