What are good alternatives to NLTK?
Wikipedia contains an extensive listing of Natural language processing toolkits, under Outline of natural language processing.
See also my recent answer to:
In light of the updated comment, I have presented a metric, see references below:
- NLTK (Natural Language Toolkit) .. Python (240)
- OpenNLP .. Java (38)
- MALLET (MAchine Learning for LanguagE Toolkit) .. Java (34)
- Stanford NLP .. Java (31)
- LingPipe .. Java (5)
- FreeLing .. Ruby (4)
- TreeTagger .. Ruby (2)
Note, ClearNLP may be added to the above list:
- ClearNLP .. Java (6)