Mind Map is described as 'The mindmap tools feature:
Progressive Web App support with offline access
Export and sharing options (save as JSON, PNG, or PowerPoint)
Rich customization (colors, emojis, images, and links)' and is a Mind Mapping tool in the office & productivity category. There are more than 10 alternatives to Mind Map, not only websites but also apps for a variety of platforms, including Mac, Windows, iPhone and Android apps. The best Mind Map alternative is draw.io, which is both free and Open Source. Other great sites and apps similar to Mind Map are LibreOffice - Draw, FreeMind, Xmind and Freeplane.