Simple Mind Map de Ben

Simple Mind Map is a lightweight extension for creating and editing mind maps in a clean black-and-white interface. Open it from the toolbar icon or context menu. Create sibling/child nodes with keyboard shortcuts, collapse branches, add notes in the right panel, attach images as thumbnails and preview in full size, and use undo/redo for editing safety. All data is stored locally in Firefox.storage.local and is not sent to external servers.