The TRALE Download Page for ''Grammar Formalisms and Parsing''

This page offers links to the complete Trale system, including all freely available predicates and tools of the Grammar Development Environment designed for it, and the graphical user interface GRALE. It is meant for participants of the web based course Grammar Formalisms and Parsing who wish to install Trale on their home computers.

At the moment (March 2008) there are two versions of the system available, which I will refer to as the old TRALE and the new TRALE:


This version of Trale provides all functionalities that are needed to work with all teaching grammars of the course and to run the MERGE grammar. It is also compatible with the description of the system in the Trale User's Manual. For questions on how to install these software packages, please consult the installation information included in the files. The old version of Trale is its last release within the MiLCA project A4, Grammar Formalisms and Parsing, of November 26th, 2003. The graphical user interface to go with it is an updated version of the former Grisu tool, now called GRALE. The version of GRALE linked above is from late 2007. Please note that the old Trale is a beta release.

There is a second version of the same Trale release which in addition comprises Patric Stiffel's chart display. However, to obtain this version you need to sign a license agreement with the DFKI in Saarbrücken, which owns the copyright to this tool. Please contact Frank Richter for further information.

Since the release of the old system, the Trale core system has undergone major revisions. These have resulted in the current pre-beta version of the new Trale system, which is still under development:


If you are interested in a recent version of Trale, you might want to download the tarball of the current public development version: The new TRALE system comprises the latest GRALE as an integrated part, and it supports the Constraint Language of Lexical Resource Semantics (CLLRS). Note, however, that the more recent releases of Trale occasionally deviate from the description of the system in the user's manual, and some functions of the old Trale are not (yet) available. At the same time the new Trale provides undocumented new functionalities (such as CLLRS). From the user's perspective, the changes are minor (apart from the additions the system), but they can be quite confusing if you are unaware of them, and there is no easy way to find out. If you are interested in a documented system rather than in speed and latest developments, the old TRALE is your better choice.

The grammars of the web based course Grammar Formalisms and Parsing need some slight adaptation for using them with the new Trale. The updated textbook grammars are available on a separate web page.

Frank Richter