Hierarchical Structure/ Outliner/ Tree style Apps

  • WorkFlowy

    Freemium Web Android iPhone Android Tablet iPad Website

    List-making software with infinite levels of indentation, giving you the flexibility of infinite layers of organization.


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  • TreeNoote

    Free Windows Website

    TreeNoote is a brand new note-taking program, free, secure and available in a portable version.

    • Hierarchical note taking application

    • Password protection: You can choose to protect the use of TreeNoote with a password ... and ask that TreeNoote ask for it again after a period of inactivity.

    • Portable App: TreeNoote for Windows does not use an installer. All the files required to run the application reside in a single folder. If you move the folder, the application will always work the same way. For example, place it on a USB key, and you can use it from one computer to another. TreeNoote leaves no footprints on the PCs on which you run it.

    • Easy to use interface: TreeNoote offers a minimalist and simple interface. No need to read tutorials to know how to use it.

    • Advanced Content?: images, photos, rich text and links

    • Full-text search: Simply start typing in the search area. Immediately the records found are displayed in the treeview, with a count of the cards found at the bottom left.

    • Rich text editor: Integrated rich text editor: choice of font, bold, italic, highlighted, alignment, bullets, line, insertion of time and date ...

    • Multilingual: Treenoote is available in English, French and Spanish.

    • Synchronized or Not...: With Treenoote, you choose the place where your notes are stored. On your computer, on a USB key or in a folder synchronized in the cloud ... It's up to you.

    10 August 2020 : Version 1.3 is now available!

    What's new in this version:

    • Print function of a note with preview, page selection, color or black and white mode, printer selection.
    • Export function in PDF format.
    • Right click possible in a note and on its title with the following functions: cut, copy, paste, paste without formatting, search on the internet, select all.
    • New version search function.
    • Possible modification of the size of the TreeNoote window, setting in full screen.
    • Tabulation possible in a note.
    • Some bugs fixed ... thanks to your feedback!


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  • Indigrid

    Free Windows Website

    A new medium for your ideas—augment your thinking with a text editor designed for structuring lists. Side-by-side views allow 3 modes of thinking.

    Indigrid lets you list and group pieces of text in a hierarchical tree structure: so that you can organize big networks of ideas and navigate them—because the emphasis is on manipulating the ideas, instead of designing a document.

    It is like a text editor for mind mapping, with more emphasis on text editing and no graphics.

    Unique outliner features

    Side-by-side views

    • Open up different parts of your outline next to each other by opening it up in a new column.
    • Drag and drop between columns.

    Unlimited undo

    • Undo history is stored even after closing Indigrid, keeping a history of all your changes.
    • Undo extended to view operations as well—closing columns, changing filters, etc.

    Boomarks (saved views)

    • Sidebar to switch between different saved-views that will keep your columns, and filters.
    • Construct "dashboards" of your different projects so you aren't spending as much time navigating your outline.

    Characteristics at a glance

    Plain text

    • No formatting keyboard shortcuts or toolbars to get in your way, just good ol' portable plain text.

    Two modes

    • Normal mode for when the focus is on operations at an element level—delete to delete an entire block of text.
    • Edit mode for when the focus is on individual letters.

    Single database

    • No file operation, i.e. save and open.
    • Automatically opens in background to corruption-resistance database that can survive power outages.

    Keyboard centered

    • Designed for touch typists.
    • Every operation possible with the mouse, is possible using the keyboard—never leave the keyboard.


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  • Dynalist

    Freemium Mac Windows Linux Web Android ... iPhone Website

    Dynalist is a web app that lets you break down and organize your thoughts in the format of lists.


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  • NoteKit

    Free Windows Linux Website

    This program is a structured notetaking application based on GTK+ 3. Write your notes in instantly-formatted Markdown, organise them in a tree of folders that can be instantly navigated from within the program, and add hand-drawn notes by mouse, touchscreen or digitiser.


    NoteKit icon
  • RunaBook

    Free Mac Windows Linux Website

    What is RunaBook?
    Simple, small, useful product for making notes, knowledge bases, and organize daily routine. Main features:

    • tree structure of the records;
    • different types of fields for recording (string, text, number, date / time, record reference, reminder, labels);
    • setting the number and types of fields in each record;
    • data encryption;
    • export / import of the whole book or a separate branch of records;
    • convenient system of links to other records;
    • HTML markup for text fields;
    • set bookmarks on records;
    • create custom record templates;
    • reminders: for the date, time, and repetitive;
    • working with multiple books in one copy of the program;
    • attach any number of files to each record;
    • filter records by all string and text fields, by date or by period, and by tags


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  • Dendron

    Free Mac Windows Linux Self-Hosted Visual Studio Code Website

    Dendron is an open-source, local-first, markdown-based, note-taking tool built on top of VSCode. It supports all the usual features you would expect like tagging, backlinks, a graph view, split panes, and so forth.


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  • CherryTree

    Free Windows Linux PortableApps.com Website

    A hierarchical note taking application, featuring rich text and syntax highlighting, storing data in a single xml or sqlite file.


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