GeoGebra.org is a free, open-source website for learning mathematics. It provides a variety of software tools ranging from geometry, algebra, statistics, and calculus. Users can access online resources for teaching and learning, such as dynamic worksheets, applets, and tutorials. The platform enables users to create, share and collaborate to solve mathematical problems making it a great resource for students, teachers, and researchers. GeoGebra is continuously updated with new features to make math learning more interactive and engaging. It is available in multiple languages and used worldwide by millions of people.