This document discusses morphological analysis and part-of-speech tagging for Russian. It compares the performance of four different taggers - Pymorphy2, Freeling, TreeTagger, and Mystem. The taggers were evaluated on their ability to identify lemmas, parts-of-speech, and full morphological tags against a reference standard from the Russian National Corpus. TreeTagger demonstrated the highest precision rates overall, while Pymorphy and Freeling achieved higher recall. The document concludes that combining the strengths of these individual taggers could help build an improved morphological tagger for Russian.