"Nutch is a nascent effort to implement an open-source web search engine."
"Plucene - A Perl port of the Lucene search engine."
"Papercut is a news server written in Python. Its main objective is to integrate existing web based message board software (Phorum is one of the supported ones) with an Usenet front-end."
"This is a dictionary of algorithms, algorithmic techniques, data structures, archetypical problems, and related definitions. Algorithms include common functions, such as Ackermann's function. Problems include traveling salesman and Byzantine generals. Some entries have links to implementations and more information. Index pages list entries by area and by type."