Poliqarp is an open source search engine designed to process text corpora, among others the National Corpus of Polish created at the Institute of Computer Science, Polish Academy of Sciences.
Features Custom query language Two-level regular expressions: operating at the level of characters in words operating at the level of words in statements/paragraphs Good performance Compact corpus representation (compared to similar projects) Portability across operating systems: Linux/BSD/Win32 Lack of portability across endianness (current release works only on little endian devices)
References
External links Polish corpus website (in English) Project website on SourceForge Search plugin for Firefox