Egothor is an Open Source, high-performance, full-featured text search engine written entirely in Java. It is technology suitable for nearly any application that requires full-text search, especially cross-platform. It can be configured as a standalone engine, metasearcher, peer-to-peer HUB, and, moreover, it can be used as a library for an application that needs full-text search.
Egothor v1 tried to solve an issue of fragments related to index maintenance. It also developed a universal stemmer that was able to process any language.
The next version (v2) was partially developed by students of the Faculty of Mathematics and Physics, Charles University in Prague. They implemented a couple of interesting components, and tested the system in several specific configurations.