Welcome to Apache OpenNLP
The Apache OpenNLP library is a machine learning based toolkit for the processing of natural language text.
Get started DownloadAbout
OpenNLP supports the most common NLP tasks, such as tokenization, sentence segmentation, part-of-speech tagging, named entity extraction, chunking, parsing, language detection and coreference resolution.
Find out more about it in our manual.
Getting Involved
The Apache OpenNLP project is developed by volunteers and is always looking for new contributors to work on all parts of the project. Every contribution is welcome and needed to make it better. A contribution can be anything from a small documentation typo fix to a new component.
Learn more about how you can get involved.