Websites

Biology and Chemistry

A comprehensive open-access platform offering free, peer-reviewed educational materials in biology and chemistry.

A resource hub for students preparing for biology olympiads, featuring study materials, test papers, and guidance.

A website that simplifies organic chemistry concepts through clear explanations, visuals, and study guides.

A nonprofit educational website delivering free lessons in a wide array of subjects from K–12 to early college.

A test prep site providing AP exam practice questions, explanations, and study resources.

A learning platform offering live tutoring, test prep, and adaptive practice tools for students of all levels.

A provider of high-quality online courses from top universities and institutions around the world.

An online learning platform offering courses, specializations, and degrees from leading universities and companies.

An interactive cybersecurity training platform where users can practice ethical hacking in virtual labs.

A development platform for hosting, sharing, and collaborating on code and software projects.

A data science platform for competitions, datasets, and collaboration with the global machine learning community.

A collaborative GitHub repository hosting educational coding projects, tutorials, and resources contributed by the Cool Coders community.

A network of Q&A websites where users can ask and answer questions on diverse topics, notably programming and science.

An interactive tool that helps visualize data structures and algorithms for better understanding and learning.