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python-frog

Python binding to Frog for Dutch NLP tasks including POS tagging, lemmatisation, dependency parsing, and NER.

Status
Generally available
Last checked
Checked · Oct 10, 2026
License
Open source
Pricing
Free tier · from $0

What it is

Python-frog is a Python library that provides bindings to the Frog natural language processing suite specifically tailored for Dutch. It supports various NLP tasks such as part-of-speech tagging, lemmatization, dependency parsing, and named entity recognition.

Python-frog stands out as a specialized tool for Dutch natural language processing tasks, offering comprehensive capabilities including POS tagging, lemmatization, dependency parsing, and named entity recognition.

When it fits — and when it doesn’t

A good fit for

  • Projects specifically requiring Dutch NLP capabilities

  • Researchers working with Dutch text data who need comprehensive NLP tools

Look elsewhere if

  • Applications that require support for languages other than Dutch

  • Teams looking for cloud-based or managed services for their NLP needs

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

  1. 01

    Limited language support

    Python-frog is specifically tailored for Dutch and does not support other languages out of the box.

  2. 02

    Dependency on Frog NLP suite

    Functionality heavily relies on the availability and performance of the Frog natural language processing suite, which might introduce additional points of failure or limitations.

  3. 03

    Narrow scope of tasks supported

    Python-frog is specialized in a few NLP tasks (POS tagging, lemmatization, dependency parsing) and does not cover more advanced NLP tasks such as sentiment analysis or machine translation.

  4. 04

    Small community support

    Given its niche focus on Dutch language processing, the user base is likely smaller compared to broader NLP libraries, which can result in fewer resources and slower issue resolution.

What it does well

  • POS tagging for Dutch text

  • Lemmatization of Dutch words

  • Dependency parsing for Dutch sentences

  • Named Entity Recognition (NER) in Dutch

Pricing

Free tier
YesOpen source — free to use
Paid from
$0
Model
Flat rate
Enterprise plan
No

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

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Set up python-frog

Setup steps, common gotchas and what to check after 30 days.

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