Software for corpus linguists and text/data mining enthusiasts. The CorpusExplorer combines over 45 interactive visualizations under a user-friendly interface. Routine tasks such as text acquisition, cleaning or tagging are completely automated. The simple interface supports the use in university teaching and leads users/students to fast and substantial results. The CorpusExplorer is open for many standards (XML, CSV, JSON, R, etc.) and also offers its own software development kit (SDK).
Source code available at https://github.com/notesjor/corpusexplorer2.0
Morfeusz is a morphological analyser (not stemmer, not tagger) for Polish, withouth a guesser - so it's a morphological dictionary of a kind. Note it's a library, not a ready program. There exist modules developed by external authors, allowing to use Morfeusz in Java and Python.
Implementation of Świdziński's formal grammar of Polish. Requires a parser (Birnam parser available as a separate tool) and a morphological analyser (no free analyser for Polish; Morfeusz can be used with restrictions - in this case the whole set is available for academic and non-commercial use only).