--- title: openNLP Reviews meta_title: 'openNLP Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter 11 reviews by the users' company size, role or industry to find out how openNLP works for a business like yours. aggregate_rating: rating_value: 4.0 review_count: 11 scale: '5' date_modified: '2026-09-30' parent_category: name: Natural Language Processing (NLP) url: https://www.g2.com/categories/natural-language-processing-nlp ---

openNLP Reviews & Product Details

User Insights

Average based on 11 real user reviews.

Aaron B.
AB
Aaron B.
Software Engineer
Computer Software
Small-Business (50 or fewer emp.)
"Abandoned before it's prime"
3/5
What do you like best about openNLP?

OpenNLP has a nice and easy to understand API. The library is usable as a stand alone command line tool but can also be used within products which makes it easy to test new ideas on the CLI and the transition to productionizing a prototype is quick. Review collected by and hosted on G2.com.

What do you dislike about openNLP?

The project has been abandoned and is no longer up to date. There's also no indication in any parts of the API as to which functions and classes are thread safe versus not. I wish there was more example code in the documentation, and the models that have been trained that are available for download are from very long ago. Review collected by and hosted on G2.com.

Questions about openNLP? Ask real users or explore answers from the community

Get practical answers, real workflows, and honest pros and cons from the G2 community or share your insights.

GU
Guest User

What is openNLP used for?

0 Upvotes
0
Join the conversation
Pricing

Pricing details for this product isn’t currently available. Visit the vendor’s website to learn more.

openNLP Comparisons