frog

Frog combines memory based NLP modules for Dutch, including tagging, lemmatization, morphology analysis, and dependency parsing.

github.com/LanguageMachines/frog
frog homepage screenshot

About frog

Frog is an integration of memory-based natural language processing modules developed for Dutch. All modules are based on Timbl, the Tilburg memory-based learning software package. It is provided as a single text processing tool with a command-line interface that can run as a daemon and a C++ library.

Pricing is not clearly stated.

Key features

  • Tagging, lemmatization and morphological analysis for Dutch
  • Dependency parsing for Dutch sentences
  • Base phrase chunking
  • Named-entity recognition
  • Runs subtasks in parallel on multi-processor systems
Watch out for
  • Debian/Ubuntu package will likely be significantly out of date
  • Manual build requires additional third party dependencies such as ICU and libxml2

frog at a glance

Type
Open-source project
Pricing
Not confirmed. Check the site
Platforms
Linux, macOS
Details verified
Oct 22, 2026 · Official source
Open source
Yes · Source code
Language
English
Last checked
Oct 5, 2026 · Online when checked
Listed
Oct 5, 2026

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