Antelope (Advanced Natural Language Object-oriented Processing Environement) is the most comprehensive natural language processing platform available. Running on Microsoft. NET or Mono, it can easily implement lexical, syntactic and semantic analysis. You can download Antelope (you must be registered) or simply read its documentation.

Antelope has been tested on Windows XP, Vista and Windows 7 (32-bit and 64-bit x86 mode), and partially tested under Linux (through Mono). Antelope includes the following features:

• Access to many part-of-speech taggers, 
• Access to the Link Grammar dependency parser,
• Access to the Stanford Parser 1.6 (no need of a Java VM),
• A parser for the French language,
• A full lexicon, with rich relations, based on WordNet 3.0 data,
• A very versatile user-defined lexicon facility,
  
  • A "French WordNet",
  • A 300,000 synsets extension with a mapping to Wikipedia,
• A syntax / semantic layer, based on VerbNet (experimental),
• An anaphora resolver (experimental),
• A space and time features detector (experimental),
• A collocation collapser,
• A sentence splitter for plain text or HTML text,
• A PROLOG interpreter for .NET,
• A Context Extraction module,
• Deep syntax extraction,
• Paraphrases extraction (very experimental),
• A syntactic Web search utility,
• Documentation with samples in both C# and Visual Basic.NET,
• Multi-threading support, can be used on a Web server,
• All-new, ribbon-based, Graphical User Interface.

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