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

An opinionated list of awesome Python frameworks, libraries, software and resources.

All Algorithms implemented in Python

Command-line program to download videos from YouTube.com and other video sites

Langflow is a powerful tool for building and deploying AI-powered agents and workflows.

A feature-rich command-line audio/video downloader

Animation engine for explanatory math videos

Hunt down social media accounts by username across social networks

为GPT/GLM等LLM大语言模型提供实用化交互接口，特别优化论文阅读/润色/写作体验，模块化设计，支持自定义快捷按钮&函数插件，支持Python和C++等项目剖析&自译解功能，PDF/LaTex论文翻译&总结功能，支持并行问询多种LLM模型，支持chatglm3等本地模型。接入通义千问, deepseekcoder, 讯飞星火, 文心一言, llama2, rwkv, claude2, m…

Turn any PDF or image document into structured data for your AI. A powerful, lightweight OCR toolkit that bridges the gap between images/PDFs and LLMs. Supports 100+ languages.

A simple, yet elegant, HTTP library.

Transforms complex documents like PDFs into LLM-ready markdown/JSON for your Agentic workflows.

LlamaIndex is the leading framework for building LLM-powered agents over your data.

🐸💬 - a deep learning toolkit for Text-to-Speech, battle-tested in research and production

An interactive TLS-capable intercepting HTTP proxy for penetration testers and software developers.

OCR software, free and offline. 开源、免费的离线OCR软件。支持截屏/批量导入图片，PDF文档识别，排除水印/页眉页脚，扫描/生成二维码。内置多国语言库。

A generative speech model for daily dialogue.

Comprehensive Python Cheatsheet

GFPGAN aims at developing Practical Algorithms for Real-world Face Restoration.

A community-maintained Python framework for creating mathematical animations.

Multi-agent framework, runtime and control plane. Built for speed, privacy, and scale.

结巴中文分词

Composable transformations of Python+NumPy programs: differentiate, vectorize, JIT to GPU/TPU, and more

Real-ESRGAN aims at developing Practical Algorithms for General Image/Video Restoration.

The OWASP Cheat Sheet Series was created to provide a concise collection of high value information on specific application security topics.

Convert PDF to markdown + JSON quickly with high accuracy

[EMNLP 2025 Demo] PDF scientific paper translation with preserved formats - 基于 AI 完整保留排版的 PDF 文档全文双语翻译，支持 Google/DeepL/Ollama/OpenAI 等服务，提供 CLI/GUI/MCP/Docker/Zotero

A complete and graceful API for Wechat. 微信个人号接口、微信机器人及命令行微信，三十行即可自定义个人号机器人。

🍰 Desktop utility to download images/videos/music/text from various websites, and more.

🗃 Open source self-hosted web archiving. Takes URLs/browser history/bookmarks/Pocket/Pinboard/etc., saves HTML, JS, PDFs, media, and more...