{{Infobox software , name = TreeLine , logo = , screenshot = , caption = , developer = , released = 2001 , latest_release_version = 3.1.4 , latest_release_date = November, 2020 , latest_preview_version = , latest_preview_date = , platform =

Linux Linux ( or ) is a family of open-source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically packaged as a Linux distribution, which ...

Windows Windows is a group of several proprietary graphical operating system families developed and marketed by Microsoft. Each family caters to a certain sector of the computing industry. For example, Windows NT for consumers, Windows Server for serv ...

, programming_language =

Python Python may refer to: Snakes * Pythonidae, a family of nonvenomous snakes found in Africa, Asia, and Australia ** ''Python'' (genus), a genus of Pythonidae found in Africa and Asia * Python (mythology), a mythical serpent Computing * Python (pro ...

, language =

English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ide ...

French French (french: français(e), link=no) may refer to: * Something of, from, or related to France ** French language, which originated in France, and its various dialects and accents ** French people, a nation and ethnic group identified with Franc ...

German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ger ...

, genre = , license =

GNU General Public License The GNU General Public License (GNU GPL or simply GPL) is a series of widely used free software licenses that guarantee end users the Four Freedoms (Free software), four freedoms to run, study, share, and modify the software. The license was th ...

, website
treeline.bellz.org
TreeLine is a

free Free may refer to: Concept * Freedom, having the ability to do something, without having to obey anyone/anything * Freethought, a position that beliefs should be formed only on the basis of logic, reason, and empiricism * Emancipate, to procur ...

and simple

outliner An outliner (or outline processor) is a specialized type of text editor (word processor) used to create and edit outlines, which are text files which have a tree structure, for organization. Textual information is contained in discrete sections ca ...

with advanced data element definition and export abilities. It uses a basic

tree structure A tree structure, tree diagram, or tree model is a way of representing the hierarchical nature of a structure in a graphical form. It is named a "tree structure" because the classic representation resembles a tree, although the chart is gener ...

to organize information, and allows the user to define different types of nodes and leaves.

File formats

Export

TreeLine outlines can be exported as HTML, per-data type user defined formatting. In addition, it supports exporting outlines as an OpenDocument ODT file,

OPML OPML (Outline Processor Markup Language) is an XML format for outlines (defined as "a tree, where each node contains a set of named attributes with string values"). Originally developed by UserLand as a native file format for the outliner appli ...

, various delimited text file formats, and as "plain" XML.

Import

TreeLine can open "plain" XML files, displaying the contents as an outline. It can import browser bookmarks.

File format

TreeLine uses a simple XML syntax to store data, with a ''.trl'' extension.

Similar programs

* Zim *

Wixi WIXI (1360 AM) is a radio station licensed to serve the community of Jasper, Alabama, United States. The station, established in 1946 as WWWB, is currently owned and operated by Gary Richardson, through licensee Richardson Broadcasting Corporat ...

* KeepNote *

KJots Kontact is a personal information manager and groupware software suite developed by KDE. It supports calendars, contacts, notes, to-do lists, news, and email. It offers a number of inter-changeable graphical UIs (KMail, KAddressBook, Akregator, ...

Tomboy A tomboy is a term for a girl or a young woman with masculine qualities. It can include wearing androgynous or unfeminine clothing and actively engage in physical sports or other activities and behaviors usually associated with boys or men. W ...

* Notecase * Gnudiary *

Basket A basket is a container that is traditionally constructed from stiff fibers and can be made from a range of materials, including wood splints, runners, and cane. While most baskets are made from plant materials, other materials such as horsehai ...

GNote Gnote is a free and open-source desktop note-taking application written for Linux, cloned by Hubert Figuière from Tomboy. It uses a Wiki-like linking system to connect notes together. Gnote is part of the GNOME desktop environment, often fillin ...

Tiddlywiki TiddlyWiki is a personal wiki and a non-linear notebook for organising and sharing complex information. It is an open-source single page application wiki in the form of a single HTML file that includes CSS, JavaScript, embedded files such as im ...

External links

Official website
Outliners 2001 software