The Open Siddur Project aims to produce a free software toolkit for making high-quality custom Jewish liturgical books such as haggadot, siddurim, and bentchers that can be displayed on screen or printed to paper. The project's goals include producing a reliable source text, enabling personalization and customization of the text for local rites and customs and selective inclusion of multilingual translations, transliterations, instructions, notes, and commentaries.
This is an open-source effort for making Hebrew properly searchable by various IR software libraries, while maintaining decent recall, precision and relevancy in retrievals. Includes Hebrew Analyzer for Lucene, and already produces results for Hebrew texts which are much better than the default Lucene implementation. Available for Java and .NET / Mono.