Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · Natural Language Processing Software

Apache OpenNLP vs Apache UIMA

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Apache OpenNLP #2 in Natural Language Processing Software 9.2/10 Open source ✓ 5 of 5 features Visit Apache OpenNLP
Apache UIMA #3 in Natural Language Processing Software 9.0/10 Free plan Free plan✓ 3 of 5 features Visit Apache UIMA

Apache OpenNLP leads on 0 checks, Apache UIMA on 0, and 6 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreApache OpenNLP · 9.2/10
  • Free planonly Apache UIMA
  • Most featuresApache OpenNLP · 5 of 5

Apache OpenNLP scores higher on our rubric for natural language processing software: 9.2 against 9.0 out of 10; our editors rank them #2 and #3.

Apache OpenNLP is the better fit for teams building broad, self-hosted NLP pipelines. Apache UIMA is the better fit for teams composing scalable text-processing pipelines.

  • Apache OpenNLP fits best

    Teams building broad, self-hosted NLP pipelines

  • Apache UIMA fits best

    Teams composing scalable text-processing pipelines

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Apache OpenNLP 9.2/10 Visit ↗ Apache UIMA 9.0/10 Visit ↗
At a glance
Editor score 9.2 9.0
Ranking #2 in Natural Language Processing Software #3 in Natural Language Processing Software
Best for Teams building broad, self-hosted NLP pipelines Teams composing scalable text-processing pipelines
Pricing model Free Free
Starting price Open source Free plan
Free plan Not checked yet ✓ (best)
Free trial — —
Deployment Self-hosted Self-hosted
Support Community, Docs Community, Docs
Built for Solo, Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Apache OpenNLP 5/5 · Apache UIMA 3/5
Text classification ✓ (best) Not checked yet
Entity extraction ✓ ✓
Sentiment analysis ✓ (best) Not checked yet
Language detection ✓ ✓
API access ✓ ✓
Specs
Deployment options On-premises On-premises
Our review
Pros
  • Covers core tasks from tokenization and parsing to classification and sentiment.
  • Offers Java APIs, command-line tools, binaries, source archives, and pretrained models.
  • Supports self-hosted, on-premises deployment with application-specific model training.
  • Compose annotators and analysis engines into reusable pipelines
  • Scale processing across distributed networked nodes
  • Build Java, C++, Perl, Python, and Tcl analysis components
Cons
  • Some tasks have limited pretrained model availability.
  • Classification and sentiment models may need task-specific training.
  • Use requires managing a self-hosted toolkit rather than a hosted cloud service.
  • Requires self-hosted deployment and developer-led operations
  • Not a hosted service with fixed built-in NLP analytics
  • Classification and sentiment may require custom or external annotators
Our verdict

Apache OpenNLP is an open-source, Java-based machine-learning toolkit for processing natural-language text. It is suited to teams building NLP into their own applications, from solo developers through enterprise teams, particularly when…

Read the review →

Apache UIMA is an open-source framework and SDK for developers who turn unstructured content into structured information. It supports analysis of text, audio, and video, with document content and results represented in the Common Analysis…

Read the review →
  1. Apache OpenNLPNatural Language Processing Software 9.2Open source
  2. Apache UIMANatural Language Processing Software 9.0Free plan

Strengths and trade-offs

  • Apache OpenNLP — where it wins

    • Covers core tasks from tokenization and parsing to classification and sentiment.
    • Offers Java APIs, command-line tools, binaries, source archives, and pretrained models.
    • Supports self-hosted, on-premises deployment with application-specific model training.

    Where it doesn't

    • Some tasks have limited pretrained model availability.
    • Classification and sentiment models may need task-specific training.
    • Use requires managing a self-hosted toolkit rather than a hosted cloud service.

  • Apache UIMA — where it wins

    • Compose annotators and analysis engines into reusable pipelines
    • Scale processing across distributed networked nodes
    • Build Java, C++, Perl, Python, and Tcl analysis components

    Where it doesn't

    • Requires self-hosted deployment and developer-led operations
    • Not a hosted service with fixed built-in NLP analytics
    • Classification and sentiment may require custom or external annotators

More comparisons

All natural language processing software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update