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For sites primarily or exclusively focused on automatically tagging texts and corpora by part of speech. Does not include general corpus annotation tools.
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General Data Tagger
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Perl code in text format from Kristie Seymore. Brief notes.
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AUTASYS - A Fully Automatic English Wordclass Analysis System
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A Windows 95/98 compatible tagger developed by Alex Chengyu Fang. Tagsets, samples, documentation.
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CLAWS Tagger
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From the UCREL corpus annotation project. Documentation, free online trial, licensing information.
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Eric Brill's Home Page
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Personal page of this computer scientist, including a download of the groundbreaking "Brill tagger." Source code from 1996, part Perl, part C.
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Infogistics Parser/Chunker
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Online demo of a system that tags and chunks English into phrases. Freely downloadable for research purposes.
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Lingsoft's morphological analyzers
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Two-level morphological analyzers for English, German, Swedish, Finnish, Danish, and both forms of Norwegian. On-line demos and licensing information.
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Machinese Phase Tagger
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Online demo of this constraint grammar-based tagger for English, French, Spanish, German, Dutch, Italian and Finnish,
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Memory-Based Tagger Demo
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Online tagging of Dutch, Spanish, English, Slovene, Swedish and German text. Extensive list of related research.
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Monty Tagger: A Brill-Based Part-of-Speech Tagger
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Portable tagger with implementations in Python and Java, based on Eric Brill's 1994 tagger. Background and license information, downloads.
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QTAG
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Downloadable Java-powered tagger, from the University of Birmingham.
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TnT: Trigrams 'n Tags
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Statistical part-of-speech tagger trainable on different languages and tagsets. Trained and trainable versions. Online demo, noncommercial licensing information, documentation.
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TreeTagger
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A language independent part-of-speech tagger, available in versions adapted to German and to English. Documentation, downloads, license information, demos.
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