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

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

Interactive roadmaps, guides and other educational content to help developers grow in their careers.

An agentic skills framework & software development methodology that works.

The open-source AI voice studio. Clone, dictate, create.

Extracted system prompts from Anthropic - Claude Fable 5, Opus 4.8, Claude Code, Claude Design. OpenAI - ChatGPT GPT-5.6, Codex GPT-5.6, GPT-5.5. Google - Gemini 3.5 Flash, 3.1 Pro, Antigravity. xA…

AI agents running research on single-GPU nanochat training automatically

Curating Top Open Source Apps for Homelab Enthusiasts

Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same answers. Library, proxy, MCP server.

A format specification for describing a visual identity to coding agents. DESIGN.md gives agents a persistent, structured understanding of a design system.

Telling stories about how code evolves

Your CLI home video recorder 📼

Track how much time you spend using Claude Code to AI-code

A tool for analyzing the output of `tsc --generateTrace`

A simple zero-config tool to make locally trusted development certificates with any names you'd like.

A complete mock of the Chrome API for Chrome extensions for use with Vitest.

A new performance tool, that is newer then new

record and replay the web

☔️ An umbrella for your monorepo

Run your GitHub Actions locally 🚀

Performance-Bookmarklet helps to analyze the current page through the Resource Timing API, Navigation Timing API and User-Timing - requests by type, domain, load times, marks and more. Sort of a li…

upload & publish extensions to the Chrome Web Store.

Github Action for puppeteer that is headful.

Session replay, cobrowsing and product analytics you can self-host. Best for reproducing issues and iterating on your product.

Robust, fast, scalable, and sandboxed open-source online code execution system for humans and AI.

🧙‍♀️ Move Fast and Break Nothing. End-to-end typesafe APIs made easy.

Shared data types for building collaborative software

Next generation frontend tooling. It's fast!