For sites primarily or exclusively focused on automatically tagging texts and corpora by part of speech. Does not include general corpus annotation tools.
Sites 8
- TreeTagger A language independent part-of-speech tagger, available in versions adapted to German and to English. Documentation, downloads, license information, demos.
- Infogistics Parser/Chunker Online demo of a system that tags and chunks English into phrases. Freely downloadable for research purposes.
- QTAG Downloadable Java-powered tagger, from the University of Birmingham.
- TnT: Trigrams 'n Tags Statistical part-of-speech tagger trainable on different languages and tagsets. Trained and trainable versions. Online demo, noncommercial licensing information, documentation.
- CLAWS Tagger From the UCREL corpus annotation project. Documentation, free online trial, licensing information.
- Lingsoft's morphological analyzers Two-level morphological analyzers for English, German, Swedish, Finnish, Danish, and both forms of Norwegian. On-line demos and licensing information.
- The original Brill tagger (in the AI repository) Eric Brill's original trainable rule-based part-of-speech tagger, which is based on error-driven transformation-based learning (TBL). Comes with a model for English. Written in C (with some Perl code).
- TiP Ltd., Poland TiP is a Polish natural language research and software development company delivering linguistic components for Polish to major IT companies.