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Linguistic Tree Constructor

Free download Linguistic Tree Constructor Web app or web tool

This is the web app or web related tool named Linguistic Tree Constructor whose latest release can be downloaded as ltc-3.2.0.tar.gz from this website



Linguistic Tree Constructor


Download this app named Linguistic Tree Constructor.

Linguistic Tree Constructor (LTC) is a tool for drawing lingusitic syntax trees of already-existing text.

It is a syntax editor, not a text editor, so the text has to exist already. It is best suited for large-scale, rapid creation of hand-annotated treebanks.

The user can define their own node categories, and can label each node with labels, also definable by the user. LTC supports "generic", X-Bar and RRG trees.

Supports interlinear texts in SIL SFM format.


  • Supports rapid drawing of syntax trees
  • Works with existing text -- not a text editor, but a syntax editor
  • X-Bar syntax supported "natively"
  • Supports "generic" trees, with user-defined labels
  • The LSC projection of Role and Reference Grammar (RRG) is supported
  • Exports to High-DPI syntax tree images for print publications (300+ DPI)
  • Exports to low-DPI syntax tree images for web publications
  • Supports user-configurable interlinear text (e.g., text + pos tag + lemma for each word)


Science/Research, Education, Developers, End Users/Desktop

User interface

Win32 (MS Windows), Eclipse, wxWidgets, Carbon (Mac OS X)

Programming Language

Prolog, C++, Java

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