Alternatives to OmniOutliner for all platforms with any license

  • WorkFlowy icon

    WorkFlowy

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

    Freemium Web / Cloud Android iPhone Android Tablet iPad

  • CherryTree icon

    CherryTree

    A hierarchical note taking application, featuring rich text and syntax highlighting, storing data in a single xml or sqlite file. The following languages are supported: Chinese Simplified (Channing Wong, up to date) Czech (Pavel...

    Open Source Windows Linux PortableApps.com

  • wikidPad icon

    wikidPad

    wikidPad is a Wiki-like notebook for storing your thoughts, ideas, todo lists, contacts, or anything else you can think of to write down. What makes wikidPad different from other notepad applications is the ease with which you can...

    Open Source Mac Windows Linux BSD

  • NixNote icon

    NixNote

    NixNote, formerly Nevernote, is an open source client for Evernote . It is written in Java so it will also run on Windows & OS-X, but the primary focus has been to try and get a usable environment for Linux. Features ...

    Open Source Mac Windows Linux

  • Org-mode icon

    Org-mode

    Org-mode is for keeping notes, maintaining ToDo lists, doing project planning, and authoring with a fast and effective plain-text system. Available also as MobileOrg on iPhone (...

    Open Source Mac Windows Linux Android iPhone iPad

    • Orgmode is not tailored to writing but more to organizing.
      Guest • Feb 2016 Disagree   Agree
  • EssentialPIM icon

    EssentialPIM

    EssentialPIM lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications. PIM stands for Personal Information Manager, and it allows you to keep all you...

    Freemium Windows Android iPhone

  • MyLifeOrganized icon

    MyLifeOrganized

    MyLifeOrganized (MLO) is a personal task outliner and to-do list manager which will help you to organize your goals, projects and tasks into a tree. The To-Do list with actions that require immediate attention will be generated. ...

    Freemium Windows Android iPhone Android Tablet iPad Apple Watch

  • KeepNote icon

    KeepNote

    KeepNote: note-taking and organization. KeepNote is a note taking application that works on Windows, Linux, and MacOS X. With KeepNote, you can store your class notes, TODO lists, research notes, journal entries, paper outlines...

    Open Source Mac Windows Linux PortableApps.com

    • Discontinued No new releases since March 2012, but last version, 0.7.8, is still working and can be downloaded from the official website.
  • Moo.do icon

    Moo.do

    Moo.do is a notepad, a to-do list, and an outliner, but with advanced features that make the cloud-based application much more useful than any of those tools would be on their own.

    Freemium Mac Windows Web / Cloud Android iPhone

  • Piggydb icon

    Piggydb

    Piggydb is a Web notebook application that provides you with a platform to build your knowledge personally or collaboratively. With Piggydb, you can create highly structured content by connecting knowledge fragments to each other to...

    Open Source Mac Windows Linux Self-Hosted

  • Checkvist icon

    Checkvist

    Checkvist is a web tool for creating online outlines, hierarchical task lists, collecting and structuring all kinds of information. It has an outstanding keyboard support so you can easily re-structure your lists, filter, hoist and...

    Freemium Web / Cloud Android iPhone iPad

  • UV Outliner icon

    UV Outliner

    UV Outliner is a small and powerful single-pane outliner. It is intended for creating, organizing, and collecting information. With UV Outliner you can create plans, schedules, and to-do lists, collect and organize ideas...

    Free Windows

    • Discontinued The program is no longer updated. Last version, 2.4.4, released in October 2012, can be still downloaded from the official website.
    • It behaves like OmniOutliner but with much fewer features.
      Guest • Nov 2015 Disagree   Agree
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  • germ.io icon

    germ.io

    germ.io is a project management tool that is centered around ideas and taking them through to execution. germ features a visual outliner to create detailed hierarchies and dependencies in an idea, one-touch states to show which...

    Free Personal Mac Windows Linux Web / Cloud Android Tablet iPad

  • Manuskript icon

    Manuskript

    Open-source tool for writers. With outliner, character management, plot development, distraction-free editor, etc.

    Open Source Mac Windows Linux

  • Dynalist icon

    Dynalist

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

    Freemium Web / Cloud

  • Organon icon

    Organon

    Organon is a plugin for LibreOffice and OpenOffice. Organon allows to split up large texts into parts, allows tagging and opening parts of the project in new tabs. Parts are shown in a treeview. Entries can be moved by...

    Open Source Mac Windows Linux LibreOffice Apache OpenOffice

  • Quoll Writer icon

    Quoll Writer

    Focus on your words not the interface. Quoll Writer is a writing application that helps you focus on your words. Clean and uncluttered. Feature rich. Features are where you would expect them to be.

    Open Source Windows

  • Tkoutline icon

    Tkoutline

    Tkoutline is a single pane, cross-platform outline editor written in Tcl/Tk . With this editor, information can be structured hierarchically in an outline and outlines can be hyperlinked together to create a web of outlines.

    Open Source Windows Linux

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  • Cloud Outliner icon

    Cloud Outliner

    Cross-platform app for Mac, iPhone, iPad, and iPod Touch. Sync outlines between computers and devices with iCloud. Sync outlines with Evernote, Import and export outlines in OPML format.

    Commercial Mac Web / Cloud iPhone iPad

  • Tree icon

    Tree

    Tree is an outliner featuring a horizontally expandable tree view. Tree assists you in organizing your information, sketching plans and brainstorming new ideas. Tree allows you to store your ideas and keywords in segments that you can...

    Commercial Mac

  • myTinyTodo icon

    myTinyTodo

    Simple way to manage your todo list in AJAX style. Written in PHP and jQuery. Data stored in SQLite or MySQL database. Distributed under the GNU GPL License. Features Multiple lists Task notes Tags (and tag cloud) Due...

    Free Self-Hosted

  • Listography icon

    Listography

    Create your lists, preserve your story, and stay inspired. "Take dictation please. Possible candidates for kite flying society". — Max Fischer, Rushmore. Listography provides users (listographers) of all ages an...

    Free Personal Web / Cloud iPhone

  • True Novelist icon

    True Novelist

    Writing a novel is a large undertaking. True Novelist was created to make the process as easy as possible for authors.

    Free Web / Cloud

  • TreeLine icon

    TreeLine

    TreeLine just stores almost any kind of information. A tree structure makes it easy to keep things organized. And each node in the tree can contain several fields, forming a mini-database. The output format for each node can be...

    Open Source Windows Linux

  • Tinderbox icon

    Tinderbox

    Tinderbox is a personal content assistant that helps you visualize, analyze, and share your notes. Tinderbox stores and organizes your notes, plans, and ideas. Tinderbox maps your notes as you make them. Build relationships by...

    Commercial Mac

  • Mars Notebook icon

    Mars Notebook

    This is the very useful tree-styled personal information manager. English, Russian, Spanish, Bulgarian, Ukrainian, German, Polish, French. You can use it every day as your assistant in your work and life. It always can be close to...

    Freemium Windows

  • Week Plan icon

    Week Plan

    Check out this FREE online fluid weekly planner. Stop trying to be productive, be effective!

    Freemium Windows Web / Cloud Android iPhone Android Tablet iPad

  • Outspline icon

    Outspline

    Extensible outliner and personal time organizer to manage todo lists, schedule tasks, remind events.

    Open Source Linux Python wxPython

  • Memento icon

    Memento

    Memento is a personal database that allows you to store all personal data in one place. Collections, purchases, inventory, recipes, tasks – let Memento handle all that. Main features: * Storing entries with custom fields; *...

    Freemium Android

  • Fargo icon

    Fargo

    Fargo is a simple idea outliner, notepad, todo list, blogging tool, project organizer. It's an HTML 5 application, written in JavaScript, runs in any compatible browser, including Chrome, Safari, Firefox, Microsoft IE 10. ...

    Free Web / Cloud Dropbox

  • Agenda At Once Free PIM icon

    Agenda At Once Free PIM

    All-in-one organizer - integrates all your PIM needs in the well-organized interface: to-do list management, time planning, contacts, reminders, recurring options and notes. Portable software.

    Free Windows

    • Discontinued Last updated in March 2013.
    • Warning The installer includes crapware. It will look like a generic "confirm and continue" page, but if you pay attention, it's asking to install crapware. There are about three or so pages of the installer that you have to deny and cancel in order to get to actually installing Agenda At Once itself. If you cancel past them, they won't install.
  • CarbonFin Outliner

    Great application for creating lists and outlines that need to be accessible anywhere, good for reoccurring shopping lists or check lists / notes on how to do a complicated or seldom used procedure. Can also view and use a check list...

    Commercial Web / Cloud iPhone iPad

  • The Outliner of Giants icon

    The Outliner of Giants

    The Outliner of Giants is a feature rich outline processor designed to support the creation and management of large corpuses of information, such as those generated by students, researchers, writers and project managers.

    Freemium Web / Cloud

  • Orgzly icon

    Orgzly

    Outliner for notes and tasks in plain-text.

    Free Android

  • Foldout icon

    Foldout

    The single-pane outliner that Windows users have been searching for for years, free! Extensive keyboard commands make outlining a fast-paced and smooth experience.

    Free Windows .NET Framework

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