Open Source Repos.

TypeScript language specification and compiler. Superset of JavaScript that adds static types.

The React framework for production. App Router, RSC, static export, and edge runtime.

Beautifully designed components using Radix UI and Tailwind CSS. Copy-paste, not a dependency.

Lightweight, unopinionated state management for React. Bear necessities only.

TypeScript-first schema validation with static type inference. Zero dependencies.

End-to-end typesafe APIs without code generation. Full-stack TypeScript with zero overhead.

Next-generation ORM for Node.js and TypeScript. Auto-completion, type safety, and migrations.

Fair-code licensed workflow automation tool. 400+ integrations, extendable with custom nodes.

Headless TypeScript ORM. SQL-like syntax, inferred types, and a powerful migration toolkit.

PostgreSQL running in WebAssembly. Full Postgres in the browser or Node.js, with zero server needed.

Performant, flexible form library with zero re-renders on change. Integrates with Zod for schema validation.

Build applications with LLMs through composability — chains, agents, retrievers, and memory.

Official Python SDK for the Claude API. Sync and async, streaming, tool use, and vision support.

Production-grade agent framework built on Pydantic. Type-safe, testable, model-agnostic.

Build stateful multi-actor applications with LLMs. Cycles, controllability, and persistence baked in.

Multi-agent conversation framework. Agents collaborate, debate, and solve tasks through chat.

Framework for orchestrating role-playing autonomous AI agents. Define roles, goals, and backstories.

Modern, fast web framework for building APIs with Python 3.8+ based on standard type hints.

Call 100+ LLMs using the OpenAI format. One interface for Claude, GPT, Gemini, Llama, and more.

Get up and running with large language models locally. Llama, Mistral, Gemma, and more via REST API.

Fast formatter and linter for JavaScript and TypeScript. Replaces Prettier + ESLint, written in Rust.

JavaScript runtime, bundler, test runner, and package manager — all in one incredibly fast toolkit.

Ergonomic and modular web framework built with Tokio and Tower. Zero-cost abstractions for async Rust HTTP.

Async, pure Rust SQL crate with compile-time checked queries. Works with PostgreSQL, MySQL, and SQLite.

Claude Code CLI — AI coding assistant in your terminal. Agentic with full file system access.

Official Node.js library for the OpenAI API. Streaming, tool use, structured outputs, and batch.

Structured LLM outputs using Pydantic. Retry logic, validation, and multi-provider support.

Intelligent memory layer for AI apps. Personalized memory across sessions for agents and chatbots.

Framework for algorithmically optimizing LM prompts and weights. Program, don't prompt.

Official MCP server implementations: filesystem, GitHub, Postgres, Puppeteer, Brave Search, and more.

The official TypeScript SDK for the Model Context Protocol. Build MCP servers and clients.

The fast, Pythonic way to build MCP servers. Decorator-based API for tools, resources, and prompts.

The best way to start a full-stack, typesafe Next.js app. Next.js + TypeScript + tRPC + Prisma + Tailwind.

Full-stack subscription SaaS with Next.js, Stripe, and Supabase. The definitive SaaS starter.

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

TypeScript-first headless CMS and application framework built on Next.js.

Algorithms and data structures implemented in JavaScript with explanations and links to further reading.

Learn how to design large-scale systems. Prep for the system design interview.

Interactive roadmaps and guides to help developers choose their path and grow in their careers.

Master programming by recreating your favorite technologies from scratch.

A complete computer science study plan to become a software engineer.