A collective list of free APIs

📚 Freely available programming books

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

Magnificent app which corrects your previous console command.

🏡 Open source home automation that puts local control and privacy first.

中英文敏感词、语言检测、中外手机/电话归属地/运营商查询、名字推断性别、手机号抽取、身份证抽取、邮箱抽取、中日文人名库、中文缩写库、拆字词典、词汇情感值、停用词、反动词表、暴恐词表、繁简体转换、英文模拟中文发音、汪峰歌词生成器、职业名称词库、同义词库、反义词库、否定词库、汽车品牌词库、汽车零件词库、连续英文切割、各种中文词向量、公司名字大全、古诗词库、IT词库、财经词库、成语词库、地名词库、…

《动手学深度学习》：面向中文读者、能运行、可讨论。中英文版被70多个国家的500多所大学用于教学。

Hunt down social media accounts by username across social networks

The Python programming language

💻 A fully functional local AWS cloud stack. Develop and test your cloud & Serverless apps offline

A simple, yet elegant, HTTP library.

1 min voice data can also be used to train a good TTS model! (few shot voice cloning)

Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more

Apache Airflow - A platform to programmatically author, schedule, and monitor workflows

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

all of the workflows of n8n i could find (also from the site itself)

🥧 HTTPie CLI — modern, user-friendly command-line HTTP client for the API era. JSON support, colors, sessions, downloads, plugins & more.

What the f*ck Python? 😱

We write your reusable computer vision tools. 💜

中文分词 词性标注 命名实体识别 依存句法分析 成分句法分析 语义依存分析 语义角色标注 指代消解 风格转换 语义相似度 新词发现 关键词短语提取 自动摘要 文本分类聚类 拼音简繁转换 自然语言处理

结巴中文分词

🚀🚀 「大模型」2小时完全从0训练26M的小参数GPT！🌏 Train a 26M-parameter GPT from scratch in just 2h!

120+ interactive Python coding interview challenges (algorithms and data structures). Includes Anki flashcards.

⚡ A Fast, Extensible Progress Bar for Python and CLI

[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

Convert PDF to markdown + JSON quickly with high accuracy

Data science Python notebooks: Deep learning (TensorFlow, Theano, Caffe, Keras), scikit-learn, Kaggle, big data (Spark, Hadoop MapReduce, HDFS), matplotlib, pandas, NumPy, SciPy, Python essentials,…

We have made you a wrapper you can't refuse

Python Fire is a library for automatically generating command line interfaces (CLIs) from absolutely any Python object.

Data validation using Python type hints