Alternatives to TreeLine for all platforms with any license

WorkFlowy

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

Freemium $ $ $ Web Android iPhone Android Tablet iPad
Export to OPML Data export/import Full text search Hierarchical structure ... Infinite hierarchical depth Import feeds from OPML Real time collaboration Tree view Zoom integration Add a feature

196 Like
Checkvist

A web tool for creating online outlines, hierarchical task lists, collecting, and structuring all kinds of information.

Freemium Web Android iPhone iPad
Keyboard centric Keyboard focused Real time collaboration Add a feature

48 Like
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...

Freemium Web Android iPhone Chrome OS
Real time collaboration Add a feature

31 Like
XML Copy Editor

XML Copy Editor is a fast, free, validating XML editor. * DTD/XML Schema/RELAX NG validation * XSLT * XPath * Pretty-printing * Syntax...

Free Open Source Windows Linux
Syntax Highlighting Add a feature

27 Like
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...

Free Windows
No features added Add a feature

30 Like
- Discontinued The program is no longer updated. Last version, 2.4.4, released in October 2012, can be still downloaded from the official website.
TreePad

A free and lightweight outliner, only 465KB in size. It allows you to store all your notes, emails, texts, hyperlinks, etc. into one or multiple plain-text databases....

Free Personal Windows Linux Raspberry Pi
Lightweight Add a feature

28 Like
OmniOutliner

OmniOutliner is a start-to-finish writing app. Perfect for collecting information, outlining Big Ideas, adding structure to any sort of writing, and much more. From...

Commercial Mac OS X iPhone iPad
Import feeds from OPML Add a feature

32 Like
Orgzly

Outliner for notes, tasks and to-dos.

Free Open Source Android Android Tablet
Sync with Dropbox To-Do management Add a feature

10 Like
Altova XMLSpy

Altova XMLSpy is the industry's best-selling XML editor and development environment for modeling, editing, transforming, and debugging XML-related technologies. It...

Commercial Windows
No features added Add a feature

14 Like
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...

Free Open Source Windows Linux
No features added Add a feature

6 Like
<oXygen/> XML Editor

<oXygen/> XML Editor is a cross platform XML Editor providing tools for XML authoring, XML conversion, XSL, XSLT, XQuery, XML Schema, DTD, Relax NG and Schematron...

Commercial Mac OS X Windows Linux
No features added Add a feature

18 Like
XML Notepad

XML Notepad provides a simple intuitive user interface for browsing and editing XML documents. Handy features include: * Tree View synchronized with Node Text...

Free Open Source Windows
No features added Add a feature

15 Like
Info Select

Info Select is a Personal Information Manager that organizes Internet data, notes, to-do's, schedules, contacts, addresses, forms, ideas, images, and much more. Been...

Commercial Windows
No features added Add a feature

6 Like
Outspline

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

Free Open Source Linux Python wxPython
No features added Add a feature

4 Like
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...

Commercial Mac OS X Web iPhone iPad
No features added Add a feature

3 Like