Mozilla is a non-profit organization that builds open-source software for the web. It is best known for its flagship product, the Firefox web browser, which is used by millions of people worldwide. Mozilla’s mission is to create a better internet that is accessible to everyone and focused on user privacy and security. The organization also develops other products and services, such as an email client, web development tools, and a virtual private network (VPN). In addition, Mozilla is involved in advocacy efforts to promote internet freedom and open standards.