Outliner Softwares and Apps

RedNotebook is a free and open-source desktop journal and diary application offering a clean interface and features for organizing notes, thoughts, and ideas with a calendar view, tag search, and basic text formatting. ...more

Manuskript is a free and open-source writing software designed specifically for authors. It provides a structured environment to plan, outline, and write novels and other complex documents, featuring tools for character tracking, plot management, and a distraction-free interface. ...more

wikidPad is a free and open-source wiki-like notebook application that allows you to store your thoughts, notes, and snippets of information in a highly organized and cross-referenced manner. Its strength lies in the effortless creation of links between pages, making it easy to navigate and connect related ideas. ...more

ToDoList is a robust, free task management software designed for individuals and teams seeking a highly customizable, tree-structured approach to project organization. It excels in breaking down complex projects into manageable subtasks, offering features like Gantt charts, Kanban boards, and extensive export options without requiring a web connection. ...more

KeepNote is a versatile note-taking application designed for organizing information in a hierarchical structure. Available on Windows, Linux, and macOS X, it features robust organization tools, including a tree-like outline, wiki-like linking, and support for embedded files and images. Although discontinued, its local storage and rich features make it a compelling tool for detailed note-taking and research. ...more

Org-mode is a powerful and flexible mode for GNU Emacs, designed for note-taking, project planning, to-do list management, and authoring documents. It utilizes simple plain text files with intuitive markup. ...more

CherryTree is a powerful, free, and open-source hierarchical note-taking application. It allows you to organize your thoughts, ideas, notes, and code snippets in a tree-like structure with rich text editing and syntax highlighting. ...more

MyTetra is a versatile, cross-platform information manager designed for collecting, organizing, and managing various types of data. It excels as a portable note-taking application, personal information manager, and notebook, offering a robust outliner and rich text editing capabilities. ...more

KeyNote NF is a versatile, open-source notebook application offering a tabbed interface, rich text editing, multi-level note organization, and robust encryption for secure information management. ...more

Quoll Writer is a dedicated writing application designed to provide a focused and organized environment for authors, particularly those working on long-form projects like novels. It combines distraction-free writing tools with robust project management features, allowing writers to concentrate on their narrative while keeping track of characters, plot points, and research materials. ...more

Plume Creator is a comprehensive writing software designed for authors, fiction writers, and novelists. It offers a distraction-free writing environment combined with robust tools for outlining, note-taking, character management, and project organization to streamline the creative process. ...more

The Guide is a discontinued, portable desktop application designed for creating and organizing information in a hierarchical tree structure. It functions as an outliner and a basic personal information manager, allowing users to associate text and notes with each node in the tree. ...more

OutWiker is a portable, tree-structured note-taking application that allows users to organize information hierarchically. Functioning as a personal wiki or outliner, it provides a simple yet powerful way to manage notes, documents, and ideas in a flexible, offline environment. ...more

TreeSheets is a hierarchical data organizer and note-taking application that utilizes a unique tree-like grid structure to manage information in a highly visual and flexible manner. It supports various data types and offers features for brainstorming, list management, and spreadsheet-like organization within a unified interface. ...more