Tabbed notebook with Rich Text editor, multi-level tree notes and strong encryption. Ideal for free-form or structured information. Stores many notes within one file. Each note can contain a hierarchical tree of topics. Powerful editing, formatting and search functions, macros, templates, plugins. Extremely configurable interface and behavior. Import and export: text, RTF, HTML, TreePad. Clickable hyperlinks, drag-and-drop. Freeware, open-source.