Paice/Husk (Lancaster) Stemmer
This page offers interchangeable implementations of the Paice/Husk stemmer, developed by Chris Paice and Gareth Husk. The official stemmer website (archived copy) has more information.
The implementations here provide different results from the "official" releases. Each of the releases on the Lancaster site produce slightly differing stems, making it impossible to use a mix of, say, C and Java stemmers on the same project. In this project, source code is provided in C, Java, Perl, and Pascal; each of these implementations produces identical stemming results, allowing different languages to work together. The source code is commented and laid out to mostly match this flowchart of the algorithm:
Perl users may prefer the Perl module
Lingua::Stem::PaiceHusk instead, suitable for incorporation into other programs.