A collective list of free APIs

Explain complex systems using visuals and simple terms. Help you prepare for system design interviews.

A library of practical AI-agent loops and an installable skill for finding, adapting, and designing repeatable agent workflows.

Skills for Real Engineers. Straight from my .agents directory.

A complete AI agency at your fingertips - From frontend wizards to Reddit community ninjas, from whimsy injectors to reality checkers. Each agent is a specialized expert with personality, processes…

💫 Toolkit to help you get started with Spec-Driven Development

HelixDB is an OLTP graph-vector database built in Rust on Object Storage.

Windows companion suite for OpenClaw - System Tray app, Shared library, Node, and PowerToys Command Palette extension

The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

Config files for my GitHub profile.

Google Flights MCP, CLI and Python Library

π RuView turns commodity WiFi signals into real-time spatial intelligence, vital sign monitoring, and presence detection — all without a single pixel of video.

Graphs that teach > graphs that impress. Turn any code into an interactive knowledge graph you can explore, search, and ask questions about. Works with Claude Code, Codex, Cursor, Copilot, Gemini C…

Mastra is the modern TypeScript framework for AI-powered applications and agents.

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

Agentic AI Framework for Java Developers

LangChain4j is an idiomatic, open-source Java library for building LLM-powered applications on the JVM. It offers a unified API over popular LLM providers and vector stores, and makes implementing …

LangChain4j is an idiomatic, open-source Java library for building LLM-powered applications on the JVM. It offers a unified API over popular LLM providers and vector stores, and makes implementing …

An Application Framework for AI Engineering

An Application Framework for AI Engineering

Chrome DevTools for coding agents

345 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 …

Cracking the Coding Interview 6th Ed. Solutions

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

Simple implementation of cluster Leadership Election using redis lock