freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.

:books: Freely available programming books

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

An agentic skills framework & software development methodology that works.

All Algorithms implemented in Python

The agent that grows with you

An Open Source Machine Learning Framework for Everyone

🙃 A delightful community-driven (with 2,500+ contributors) framework for managing your zsh configuration. Includes 300+ optional plugins (rails, git, macOS, hub, docker, homebrew, node, php, python, etc), 140+ themes to spice up your morning, and an auto-update tool that makes it easy to keep up with the latest updates from the community.

Build and run autonomous AI agents for open-ended tasks

Break a plan, spec, or conversation into independently actionable tracer-bullet tickets with explicit blocking relationships.

Implement work from an approved spec or ticket set, run focused and full tests, invoke code review, and commit the result to the current branch.

A single CLAUDE.md file to improve Claude Code behavior, derived from Andrej Karpathy's observations on LLM coding pitfalls.

React and Next.js performance guidance for writing, reviewing, and refactoring production UI code.

Create a structured post-earnings equity research update with key metrics, estimate changes, charts, and thesis review.

Review portfolio-company financial packages, flag variance to plan, and prepare monitored KPI summaries.

Complete and link income statement, balance sheet, and cash flow statement model templates with formulas and checks.

Review UI code for web interface guidelines, UX quality, accessibility, and interaction design best practices.

Deploy applications and websites to Vercel, including preview deployments and shareable deployment links.

Guidance for distinctive, intentional UI design, typography, visual direction, and non-template-like product interfaces.

Use Playwright to interact with and test local web applications, capture screenshots, debug UI behavior, and inspect browser logs.

Create original visual art, posters, PNG assets, and PDF documents through a clear design philosophy.

Apply Anthropic official brand colors, typography, and visual standards to appropriate Anthropic-related artifacts.

Design and implementation guidance for distinctive landing pages, portfolios, product demos, and purposeful redesigns.

AI-agent Skill for generating polished HTML slide decks: editorial magazine and Swiss layouts, image prompts, social covers, and a WebGL/low-power presentation runtime.

The free and privacy-friendly screen recorder with no limits 🎥

Official Lark/Feishu CLI tool with 200+ commands and 26 AI agent skills, designed for agent-native operation and easy integration with AI runtimes.

Curated list of the best truly open-source AI projects, models, tools, and infrastructure.

Framework for AI agents to build and maintain a digital brain through Obsidian wiki using Karpathy's LLM Wiki pattern

🎨 Local-first, open-source Claude Design alternative. 🖥️ Native desktop app. ⚡ 259+ Skills · ✨ 142+ Design Systems 🖼️ Web · desktop · mobile prototypes · slides · images · videos · HyperFrames 📦 Sandboxed preview · HTML/PDF/PPTX/MP4 export 🤖 Claude Code / OpenClaw / Codex / Cursor / OpenCode / Qwen / Copilot / Hermes / Kimi & 17+ CLIs.

Beautiful, AI-native markdown editor and LLM Wiki

Self-evolving agent: grows skill tree from 3.3K-line seed, achieving full system control with 6x less token consumption

337 Claude Code skills & agent skills & plugins (30+ Agents, 70+ custom commands, 330+ skills, customizable references, scripts)for Claude Code, Codex, Gemini CLI, Cursor, and 8 more coding agents — engineering, marketing, product, compliance, C-level advisory, research, business operations, commercial & finance, and your daily productivity skills.