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Master programming by recreating your favorite technologies from scratch.

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

:books: Freely available programming books

Your own personal AI assistant. Any OS. Any Platform. The lobster way. 🦞

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

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

An opinionated list of Python frameworks, libraries, tools, and resources

A list of Free Software network services and web applications which can be hosted on your own servers

An arbitrage bot is a smart contract connected to an external automation script that controls its operation.

本地优先的 AI Agent 用量统计桌面应用：官方配额、本地 Token、估算成本三类事实分开呈现，读不到就说不可用

可能是最深度的 AI 投研报告 Skill：九章个股深研 + 九章财报深度分析，脚本化 DCF/EPV 与可复算估值

TRX Drainer Tool — Automated TRX and TRC20 token drainer for TRON wallets with real-time balance monitoring, multi-wallet sweeping, TronLink/Trust Wallet compatibility, and stealth energy-optimized transaction routing

AVE 是面向安全运营的多源漏洞知识库，统一 AVE 编号并输出结构化 TOML，同时整理和校验公开 PoC/EXP 资产，支持按严重等级快速筛选高价值漏洞。漏洞爬取与梳理的代码和逻辑暂未开源。

Evidence-based learning engine for Claude Code — first-principles curricula, free-recall verification with receipts, FSRS-scheduled memory, and explorable artifacts. Learn anything; keep it.

A template repository for guiding AI coding agents to write safe, modern C++20/23/26 code using modules, concepts, modern CMake, Core Guidelines, tests, and repeatable build-test-review loops.

Editor, compiler, and runtimes for writing and running dialogue flows for videogames.