[Corpora-List] brat rapid annotation tool v1.3 (Crunchy Frog) release announcement

Pontus Stenetorp pontus at stenetorp.se
Thu Nov 8 09:05:53 CET 2012

Dear colleagues,

We are proud to announce brat v1.3 (Crunchy Frog), an open-source (MIT), browser-based tool for text annotation. The tool is available from:


And examples of past and potential usages presented at:


brat is a general-purpose tool for the visualisation and creation of annotations for tasks such as entity mention annotation, relation and event annotation, dependency syntactic annotation, and others. The new version introduces many new features to the tool, including:

* entity normalisation / linking / grounding support

http://brat.nlplab.org/normalization.html * supporting embedded visualisations for web pages and web-based applications

http://brat.nlplab.org/embed.html * discontinuous text annotations * in-built annotation tutorials and additional example corpora * new annotation comparison functionality * a fast, easy-to-use standalone server (experimental)

For details, please see:


If you want to upgrade an existing installation, please see:


brat is developed as a collaborative effort between several research groups as an open source and open development project, and we warmly welcome contributions and participation from the community. Possible contributions are not limited to code, but also include feature requests, bug reports and more.

Since its initial release, brat has been adopted for use in corpus annotation and other tasks by various groups. We hope this new version will be as well received as the initial release of the tool, and will gladly answer questions and welcome any feedback.

Additional information:

The new normalisation features were presented in:

Stenetorp et al. Normalisation with the brat rapid annotation tool

In proceedings of SMBM'12



brat homepage: http://brat.nlplab.org/

brat code repository: http://github.com/nlplab/brat

brat issue tracker: http://github.com/nlplab/brat/issues

NaCTeM page on brat: http://www.nactem.ac.uk/brat-annotation/

Mailing list:

To join the brat-users mailing list, send an e-mail to:

brat-users+subscribe at googlegroups.com

Or visit the brat-users Google Group homepage:


The primary brat developers are:

Pontus Stenetorp (Aizawa laboratory, University of Tokyo)

<pontus at stenetorp.se>

Goran Topić (RCKMCS, National Institute of Informatics)

<goran_topic at nii.ac.jp>

Sampo Pyysalo (NaCTeM and University of Manchester)

<sampo.pyysalo at gmail.com>

Tomoko Ohta (NaCTeM and University of Manchester)

<tomoko.ohta at manchester.ac.uk>

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