Contribute to NLTK

The Natural Language Toolkit exists thanks to the efforts of dozens of voluntary developers who have contributed functionality and bugfixes since the project began in 2000 (contributors).

In 2015 we extended NLTK coverage of: dependency parsing, machine translation, sentiment analysis, twitter processing. In 2016 we are continuing to refine support in these areas.

Other information for contributors:


The NLTK project is led by Steven Bird, Ewan Klein, and Edward Loper. Individual packages are maintained by the following people:

Semantics:Dan Garrette, Austin, USA (nltk.sem, nltk.inference)
Parsing:Peter Ljunglöf, Gothenburg, Sweden (nltk.parse, nltk.featstruct)
Metrics:Joel Nothman, Sydney, Australia (nltk.metrics, nltk.tokenize.punkt)
Python 3:Mikhail Korobov, Ekaterinburg, Russia
Releases:Steven Bird, Melbourne, Australia
NLTK-Users:Alexis Dimitriadis, Utrecht, Netherlands