TextIndexNG is designed and written by Andreas Jung and published under the
Zope Public License ZPL (http://www.zope.org/Resources/ZPL)

The following parts of TextIndexNG are not covered by the ZPL:

  - The PyStemmer and PySimilarity extensions for Python are (C) by Andreas
    Jung and published under the MIT Public License.

  - Some converters are based on code from the DocumentLibrary published under
    the Kaivo license (Thanks to Casey Duncan).

  - The QueryParser is (C) by Sidnei da Silva and published under the GPL.

  - The Snowball stemmer sources are (C) Dr. Martin Porter and published under
    the MIT Public License.

  - Matt Hamilton contributed code for compressed lists that uses header files
    (C) by Neil Sherman and Alistair Moffat published under the GPL.

  - TXNGSplitter uses parts of the "libdict" packages. The package is published
    under the Berkely License.  Copyright (C) 2001 Farooq Mela. All rights reserved.

