freeCodeCamp.org's open-source codebase and curriculum. Learn to code for free.

A list of open source projects with links to contribute or donate.

List of Open Source production-ready web projects

Quickly make and deploy full-stack apps with database, auth, styling, storage etc. figured out for you. Add all primitives you want.

Learn to create modern websites with sleek parallax effects and bento box layouts. This course covers everything from stylish UI design to mobile-first principles while strengthening your React.js …

Beautifully designed components that you can copy and paste into your apps. Accessible. Customizable. Open Source.

Design inspirations for app designers and developers

Authentication for the Web.

Horizon UI NextJS | The trendiest & innovative Open Source Admin Template for Chakra UI & React!

Open-source RAG Framework for building GenAI Second Brains 🧠 Build productivity assistant (RAG) ⚡️🤖 Chat with your docs (PDF, CSV, ...) & apps using Langchain, GPT 3.5 / 4 turbo, Private, Anthropic…

Document chatbot — multiple files, topics, chat windows and chat history. Powered by GPT.

🦜🔗 Build context-aware reasoning applications 🦜🔗

Mercury - Train your own custom GPT. Chat with any file, or website.

Horizon UI JavaScript ⭐️ The trendiest & innovative Open Source Admin Template for Chakra UI & React!

150+ HTML5 Website Templates

LlamaIndex is a data framework for your LLM applications

Chatbot Ollama is an open source chat UI for Ollama.

Leetcode in Python

Checklist of the most important security countermeasures when designing, testing, and releasing your API

A curated list of high quality coding style conventions and standards.

Learn Domain-Driven Design, software architecture, design patterns, best practices. Code examples included

A collection of Linux Sysadmin Test Questions and Answers. Test your knowledge and skills in different fields with these Q/A.

A collection of (mostly) technical things every software developer should know about

Linux, Jenkins, AWS, SRE, Prometheus, Docker, Python, Ansible, Git, Kubernetes, Terraform, OpenStack, SQL, NoSQL, Azure, GCP, DNS, Elastic, Network, Virtualization. DevOps Interview Questions

Curated list of project-based tutorials

A curated list of awesome System Design (A.K.A. Distributed Systems) resources.

Learn System Design concepts and prepare for interviews using free resources.

Explain complex systems using visuals and simple terms. Help you prepare for system design interviews.