Herd Of Scenes
Jakarta Lucene "is a high-performance, full-featured text search engine library written entirely in Java."
Lupy "is a full-text indexer and search engine written in Python. It is a port of Jakarta Lucene 1.2 to Python. Specifically, it reads and writes indexes in Lucene binary format."
PyLucene "is a GCJ-compiled version of Java Lucene integrated with Python via SWIG. [...] It is designed to be API-compatible with the latest version of Java Lucene."
(If it is data file-compatible, why also be API-compatible? Isn't that an unnecessary constraint? Afterall, Java is more verbose than Python. Also, why not Lupy?)
rubylucene (formerly "rucene") "aims to implement a Ruby version of the popular Lucene search engine."
Plucene - "A Perl port of the Lucene search engine."
Up for grabs: LuaCene, Tclucene (pronounced tick-cloo-seen), clucene (cloo-seen), schcene (shhheeeeen), Smallucene (disease or vaccine?), thiscene, thatcene, yadayadacene, etcene.