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
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
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
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.