Top 16 Java Natural Language Processing Projects

Natural Language Processing

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1. languagetool

   1 320 13,489 9.9 Java

   Style and Grammar Checker for 25+ Languages

   

   Project mention: Show HN: Refine – A Local Alternative to Grammarly | news.ycombinator.com | 2025-07-14

   +1. Also worth noting that both LanguageTool [0] and Harper [1] are FOSS.

   [0] https://languagetool.org/

   [1] https://writewithharper.com/

2. Sevalla

   sevalla.com featured

   Deploy and host your apps and databases, now with $50 credit! Sevalla is the PaaS you have been looking for! Advanced deployment pipelines, usage-based pricing, preview apps, templates, human support by developers, and much more!

   

3. CoreNLP

   2 12 9,962 9.2 Java

   CoreNLP: A Java suite of core NLP tools for tokenization, sentence segmentation, NER, parsing, coreference, sentiment analysis, etc.

   

   Project mention: Fine-tuning LLMs locally: A step-by-step guide | dev.to | 2025-04-08

   A suitable LLM library such as Hugging Face's Transformers or Stanford's CoreNLP

4. Apache OpenNLP

   3 0 1,533 9.1 Java

   Apache OpenNLP

   

5. Mallet

   4 1 1,009 2.4 Java

   MALLET is a Java-based package for statistical natural language processing, document classification, clustering, topic modeling, information extraction, and other machine learning applications to text.

   

6. BotLibre

   5 1 617 5.4 Java

   An open platform for artificial intelligence, chat bots, virtual agents, social media automation, and live chat automation.

   

7. CogCompNLP

   6 0 478 0.0 Java

   CogComp's Natural Language Processing Libraries and Demos: Modules include lemmatizer, ner, pos, prep-srl, quantifier, question type, relation-extraction, similarity, temporal normalizer, tokenizer, transliteration, verb-sense, and more.

   

8. airy

   7 4 398 6.3 Java

   💬 Open Source App Framework to build streaming apps with real-time data - 💎 Build real-time data pipelines and make real-time data universally accessible - 🤖 Join historical and real-time data in the stream to create smarter ML and AI applications. - ⚡ Standardize complex data ingestion and stream data to apps with pre-built connectors

   

9. InfluxDB

   www.influxdata.com featured

   InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

   

10. DKPro Core

    8 0 200 8.1 Java

    Collection of software components for natural language processing (NLP) based on the Apache UIMA framework.

    

11. minie

    9 1 93 0.0 Java

    An open information extraction system that provides compact extractions

    

12. OdinRunes

    10 9 83 6.8 Java

    Odin Runes, a java-based GPT client, facilitates interaction with your preferred GPT model right through your favorite text editor. There is more: It also facilitates prompt-engineering by extracting context from diverse sources using technologies such as OCR, enhancing overall productivity and saving costs.

    

13. turing

    11 2 63 9.5 Java

    :sparkles: :dna: Turing ES - Enterprise Search, Semantic Navigation, Chatbot using Search Engine and Generative AI.

    

14. aot

    12 1 62 5.1 Java

    Russian morphology analyzer for Java | Морфологический словарь русского языка для Java

    

15. ModelRunner

    13 1 56 0.0 Java

    No-code, model driven, natural language data access platform

    

16. LangageLinotte

    14 1 45 1.8 Java

    Code source officiel du langage de programmation Linotte - Langage de programmation en français simple créé dans le but de permettre aux enfants et aux personnes n'ayant pas une connaissance approfondie de l’informatique d’apprendre la programmation facilement.

    

17. natty

    15 1 12 8.7 Java

    Java natural language date parser

    

18. ateabot

    16 1 0 0.0 Java

    

19. SaaSHub

    www.saashub.com featured

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

    

Java Natural Language Processing related posts

• Free Grammar Checker – LanguageTool

  1 project | news.ycombinator.com | 18 Sep 2024

• Comparing Language Detection Libraries (& API) Using Java/ColdFusion/CFML

  4 projects | dev.to | 4 Sep 2024

• Ask HN: Any spell-checkers that are good?

  1 project | news.ycombinator.com | 3 Sep 2024

• languagetool VS harper - a user suggested alternative

  2 projects | 29 Jul 2024

• Ask HN: Grammarly Alternatives?

  2 projects | news.ycombinator.com | 27 Feb 2024

• Recent ECE Masters grad looking to change careers from IT to RF engineering

  1 project | /r/EngineeringResumes | 29 Sep 2023

• Hey guys! I have my first draft here as a first-year computer engineering student. I'm preparing for an internship fair and I'd like to have something decent. Roast me!!

  1 project | /r/EngineeringResumes | 25 Sep 2023
• A note from our sponsor - Sevalla
  sevalla.com | 1 Sep 2025

  Sevalla is the PaaS you have been looking for! Advanced deployment pipelines, usage-based pricing, preview apps, templates, human support by developers, and much more! Learn more →

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