# 12.7 Other NLP Libraries and Tools¶

Additional mostly free and open source NLP libraries and APIs:

- Gensim—Similarity detection and topic modeling
- Google Cloud Natural Language API—Cloud-based API for NLP tasks such as named entity recognition, sentiment analysis, parts-of-speech analysis and visualization, determining content categories and more
- Microsoft Linguistic Analysis API
- Bing sentiment analysis—Microsoft’s Bing search engine now uses sentiment in its search results
- PyTorch NLP—Deep learning library for NLP
- Stanford CoreNLP—A Java NLP library, which also provides a Python wrapper. Includes corefererence resolution, which finds all references to the same thing.
- Apache OpenNLP—Another Java-based NLP library for common tasks, including coreference resolution. Python wrappers are available.
- PyNLPl (pineapple)—Python NLP library provides a range of NLP capabilities
- SnowNLP—Python library that simplifies Chinese text processing
- KoNLPy—Korean language NLP
- `stop-words`—Python library with stop words for many languages. We used NLTK’s stop words lists in this chapter.
- `TextRazor`—A paid cloud-based NLP API that provides a free tier

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