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Tkoutline

Tkoutline is a single pane, cross-platform outline editor written in Tcl/Tk .

20 Alternatives To Tkoutline

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Altova XMLSpy

The XMLSpy XML Editor is a powerful tool for editing XML and related technologies. It is the only XML Editor with patented SmartFix validation, enterprise-grade editors, converters, debuggers, and code generators.

Checkvist

Checkvist is a tool to create and share checklists, plans, and outlines.
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Dynalist

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

Fargo is a simple idea outliner, notepad, todo list, blogging tool, project organizer.

Firstobject XML Editor

Firstobject’s free XML editor for Windows is called foxe.

Foldout

The single-pane outliner that Windows users have been searching for for years, free!

Joplin

Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.

MemPad

MemPad is a plain text outliner and note taking program with a structured index.

Moo

Moo allows you to create top quality, premium business cards.

OmniOutliner

OmniOutliner is a writing app for collecting information, outlining ideas, adding structure to any sort of writing.

OneNote

Get the OneNote app for free on your tablet, phone, and computer, so you can capture your ideas and to-do lists in one place wherever you are. Or try OneNote with Office for free.
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Orgzly

Outliner for notes, tasks and to-dos
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OutlineEdit

A beautifully crafted outliner for your Mac:
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Outspline

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

The simplest way to keep notes. Light, clean, and free. Simplenote is now available for iOS, Android, Mac, and the web.
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Todoist

Todoist is a to-do list that helps you get organized, at work and in life.

TreeLine

TreeLine just stores almost any kind of information.
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UV Outliner

UV Outliner is a small and powerful single-pane outliner.

Vimwiki

Vimwiki is a personal wiki for Vim – interlinked, plain text files written in a markup language.

Visual Outliner

Visual Outliner is an outliner software for Windows, and it uses OPML as native file format.