1.public-apis / public-apis
A collective list of free APIs
Ranked by Attention Score: stars gained over the last 90 complete days
1–100 of 1,269 by Attention Score · Aug 5, 2026 – Nov 2, 2026 (UTC)
A collective list of free APIs
Turn any AI agent into an AI Scientist. The #1 Agent Skills library for science, used by 250,000+ scientists worldwide. 177 ready-to-use validated skills plus 100+ scientific databases covering biology, chemistry, medicine, and drug discovery. Compatible with Cursor, Claude Code, Codex, Pi, Antigravity, and the open Agent Skills standard.
AirLLM 2.8T LLM inference with single 4GB GPU
12 Weeks, 24 Lessons, AI for All!
The 30 Days of Python programming challenge is a step-by-step guide to learn the Python programming language in 30 days. This challenge may take more than 100 days. Follow your own pace. These videos may help too: https://www.youtube.com/channel/UC7PNRuno1rzYPb1xLa4yktw
TimesFM (Time Series Foundation Model) is a pretrained time-series foundation model developed by Google Research for time-series forecasting.
18 Lessons to Get Started Building AI Agents
Implement a ChatGPT-like LLM in PyTorch from scratch, step by step
21 Lessons, Get Started Building with Generative AI
freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.
An Open Source implementation of Notebook LM with more flexibility and features
1,324-exercise fitness dataset — animation GIFs, 180×180 thumbnails, muscle-group & equipment data, and step-by-step instructions in 6 languages. The exercise data layer behind the LogPress app.
🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.
In-depth tutorials on LLMs, RAGs and real-world AI agent applications.
A collection of notebooks/recipes showcasing some fun and effective ways of using Claude.
:hedgehog: PostHog is the leading platform for building self-driving products. Our developer tools – AI observability, analytics, session replay, flags, experiments, error tracking, logs, and more – capture all the context agents need to diagnose problems, uncover opportunities, and ship fixes. Steer it all from Slack, web, desktop, or the MCP.
Tensors and Dynamic neural networks in Python with strong GPU acceleration
12 weeks, 26 lessons, 52 quizzes, classic Machine Learning for all
《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。
DuckDB is a high-performance analytical database system
Summer 2027 software engineering, data science, AI, quant, product management, and hardware internship postings. Updated daily by Simplify and Pitt CSC.
One has no future if one couldn't teach themself.
⭐AI-driven public opinion & trend monitor with multi-platform aggregation, RSS, and smart alerts.🎯 告别信息过载,你的 AI 舆情监控助手与热点筛选工具!聚合多平台热点 + RSS 订阅,支持关键词精准筛选。AI 智能筛选新闻 + AI 翻译 + AI 分析简报直推手机,也支持接入 MCP 架构,赋能 AI 自然语言对话分析、情感洞察与趋势预测等。支持 Docker ,数据本地/云端自持。集成微信/飞书/钉钉/Telegram/邮件/ntfy/bark/slack 等渠道智能推送。
Data Engineering Zoomcamp is a free 9-week course on building production-ready data pipelines. Join the course here 👇🏼
WeFlow - 一个本地的微信聊天记录导出和年度报告应用
Open source observability platform for logs, metrics, traces, RUM (web, android, ios), Session replay, pipelines, SLO and LLM observability. A sophisticated, simple and highly performant alternative to Datadog, Splunk, and Elasticsearch with 140x lower storage costs and single binary deployment.
Official code repo for the O'Reilly Book - "Hands-On Large Language Models"
A topic-centric list of HQ open datasets.
Examples and guides for using the OpenAI API
The flexible backend for all your projects 🐰 Turn your DB into a headless CMS, admin panels, or apps with a custom UI, instant APIs, auth & more.
This is a repo with links to everything you'd ever want to learn about data engineering
Draw pretty maps from OpenStreetMap data! Built with osmnx +matplotlib + shapely
Umami is a privacy-first web and product analytics platform. Traffic, campaigns, behavior, conversions, and revenue in one place. No cookies, no surveillance, self-hosted or in the cloud.
The open and composable observability and data visualization platform. Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Postgres and many more.
ClickHouse® is a real-time analytics database management system
500 AI Machine learning Deep learning Computer vision NLP Projects with code
🪄 Data Formulator is an interactive AI-powered data analysis system makes it easy to connect, explore and visualize data.
The easy-to-use open source Business Intelligence and Embedded Analytics tool that lets everyone work with data :bar_chart:
Anthropic's Interactive Prompt Engineering Tutorial
The Prometheus monitoring system and time series database.
Build your personal knowledge base with Trilium Notes
A tiny scalar-valued autograd engine and a neural net library on top of it with PyTorch-like API
For developers, who are building real-time data-driven applications, Redis is the preferred, fastest, and most feature-rich cache, data structure server, and document and vector query engine.
10 Weeks, 20 Lessons, Data Science for All!
Open-Source Agent Observability & Evals for AI Platform teams. Trace, test, route and govern every agent & coding assistant in the company.
Code for Machine Learning for Trading, 3rd edition — from data sourcing to live execution.
Open source, privacy-first web analytics. Lightweight, cookie-free Google Analytics alternative. Self-hosted or cloud.
AKShare is an elegant and simple financial data interface library for Python, built for human beings! 开源财经数据接口库
Apache Superset is a Data Visualization and Data Exploration Platform
The fastest path to AI-powered full stack observability, even for lean teams.
🦋 An Infographic Generation and Rendering Framework, bring words to life with AI!
[WIP] Resources for AI engineers. Also contains supporting materials for the book AI Engineering (Chip Huyen, 2025)
This repository showcases various advanced techniques for Retrieval-Augmented Generation (RAG) systems. Each technique has a detailed notebook tutorial.
This repository is maintained by Omar Santos (@santosomar) and includes thousands of resources related to ethical hacking, bug bounties, digital forensics and incident response (DFIR), AI security, vulnerability research, exploit development, reverse engineering, and more. 🔥 Also check: https://hackertraining.org
scikit-learn: machine learning in Python
GenBI (Generative BI) for AI agents, an open-source, governed text-to-SQL through an open context layer that turns natural-language questions into trusted dashboards, charts, and SQL across 20+ data sources, such as BigQuery, Snowflake, PostgreSQL, ClickHouse, Amazon Redshift, Databricks and more.
A reactive notebook for Python — run reproducible experiments, query with SQL, execute as a script, deploy as an app, and version with git. Stored as pure Python. All in a modern, AI-native editor.
《开源大模型食用指南》针对中国宝宝量身打造的基于Linux环境快速微调(全参数/Lora)、部署国内外开源大模型(LLM)/多模态大模型(MLLM)教程
[SIGMOD'27] Easy Data Preparation with latest LLMs-based Operators and Pipelines.
50+ tutorials and implementations for Generative AI Agent techniques, from basic conversational bots to complex multi-agent systems.
AI Observability & Evaluation
✅(已完结)超级全面的 深度学习 笔记【土堆 Pytorch】【李沐 动手学深度学习】【吴恩达 深度学习】【大飞 大模型Agent】
阿布量化交易系统(股票,期权,期货,比特币,机器学习) 基于python的开源量化交易,量化投资架构
Extremely fast Query Engine for DataFrames, written in Rust
Learn ML engineering for free in 4 months! Register here 👇🏼
Research and development (R&D) is crucial for the enhancement of industrial productivity, especially in the AI era, where the core aspects of R&D are mainly focused on data and models. We are committed to automating these high-value generic R&D processes through R&D-Agent, which lets AI drive data-driven AI. 🔗https://aka.ms/RD-Agent-Tech-Report
Apache Airflow - A platform to programmatically author, schedule, and monitor workflows
FinRL®: Financial Reinforcement Learning. 🔥
The best free and open-source automated time tracker. Cross-platform, extensible, privacy-focused.
Learn how to develop, deploy and iterate on production-grade ML applications.
Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more
Download market data from Yahoo! Finance's API
Machine Learning From Scratch. Bare bones NumPy implementations of machine learning models and algorithms with a focus on accessibility. Aims to cover everything from linear regression to deep learning.
Performant financial charts built with HTML5 canvas
Python Data Science Handbook: full text in Jupyter Notebooks
微舆:人人可用的多Agent舆情分析助手,打破信息茧房,还原舆情原貌,预测未来走向,辅助决策!从0实现,不依赖任何框架。
Streamlit — A faster way to build and share data apps.
The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis
Ray is an AI compute engine. Ray consists of a core distributed runtime and a set of AI Libraries for accelerating ML workloads.
📚 Papers & tech blogs by companies sharing their work on data science & machine learning in production.
Build and share delightful machine learning apps, all in Python. 🌟 Star to support our work!
Apache ECharts is a powerful, interactive charting and data visualization library for browser
:fireworks:Interactive Online Platform that Visualizes Algorithms from Code
Materials for the Learn PyTorch for Deep Learning: Zero to Mastery course.
Interactive deep learning book with multi-framework code, math, and discussions. Adopted at 500 universities from 70 countries including Stanford, MIT, Harvard, and Cambridge.
The HTML5 Creation Engine: Create beautiful digital content with the fastest, most flexible 2D WebGL renderer.
This open-source curriculum introduces the fundamentals of Model Context Protocol (MCP) through real-world, cross-language examples in .NET, Java, TypeScript, JavaScript, Rust and Python. Designed for developers, it focuses on practical techniques for building modular, scalable, and secure AI workflows from session setup to service orchestration.
Apache Spark - A unified analytics engine for large-scale data processing
Meshery, the cloud native manager
Bring data to life with SVG, Canvas and HTML. :bar_chart::chart_with_upwards_trend::tada:
Session replay, cobrowsing and product analytics you can self-host. Best for reproducing issues and iterating on your product.
Google Research
🐸 Rybbit - open-source and privacy-friendly alternative to Google Analytics that is 10x more intuitive.