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.

📚 Freely available programming books

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

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

Curated list of project-based tutorials

All Algorithms implemented in Python

Fair-code workflow automation platform with native AI capabilities. Combine visual building with custom code, self-host or cloud, 400+ integrations.

A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev

An extremely fast Python package and project manager, written in Rust.

Apache Superset is a Data Visualization and Data Exploration Platform

Source code for the X Recommendation Algorithm

Inference code for Llama models

🚀🤖 Crawl4AI: Open-source LLM Friendly Web Crawler & Scraper. Don't be shy, join here: https://discord.gg/jP8KfhDhyN

Fine-tuning & Reinforcement Learning for LLMs. 🦥 Train OpenAI gpt-oss, DeepSeek-R1, Qwen3, Gemma 3, TTS 2x faster with 70% less VRAM.

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

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

The easy-to-use open source Business Intelligence and Embedded Analytics tool that lets everyone work with data 📊

ClickHouse® is a real-time analytics database management system

An extremely fast Python linter and code formatter, written in Rust.

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

Apache Spark - A unified analytics engine for large-scale data processing

This is a repo with links to everything you'd ever want to learn about data engineering

Extremely fast Query Engine for DataFrames, written in Rust

Data Engineering Zoomcamp is a free 9-week course on building production-ready data pipelines. The next cohort starts in January 2026. Join the course here 👇🏼

Mirror of Apache Kafka

Best and simplest tool for website change detection, web page monitoring, and website change alerts. Perfect for tracking content changes, price drops, restock alerts, and website defacement monito…

Distributed Task Queue (development branch)

A collection of notebooks/recipes showcasing some fun and effective ways of using Claude.

Documentation that simply works