Freeplane is a free and open-source mind mapping software that allows users to organize their ideas and thoughts in a structured and visual manner. 

One of the key features of Freeplane is its flexibility. Users can customize the appearance and layout of their mind maps to suit their needs, choosing from a variety of themes, icons, and fonts. They can also add notes, links, and attachments to each node, making it easy to keep track of important information and resources.

Freeplane is also highly collaborative. Users can share their mind maps with others and work together in real-time, making it ideal for group projects and brainstorming sessions. It supports a wide range of file formats, including HTML, PDF, and PNG, so users can easily share and export their mind maps in a variety of ways.

Another notable feature of Freeplane is its extensive library of plugins. These plugins add additional functionality to the software, such as the ability to import and export data from other applications, automate repetitive tasks, and integrate with popular productivity tools like Trello and Evernote.

Freeplane is a powerful and versatile tool for organizing ideas and information. Whether you're a student, a professional, or just someone who likes to stay organized, Freeplane is definitely worth checking out. Best of all, it's completely free and open-source, so anyone can use and contribute to its development.

Key Features 

• Mind mapping capabilities to visually organize ideas and thoughts.
• Customization options for the appearance of mind maps.
• Templates available for different types of mind maps.
• Collaboration features for working on mind maps with others.
• Task management tools for assigning and tracking tasks.
• Export options for saving mind maps in various formats.
• Add-ons to extend the functionality of the software.