Others, like gensim (Řehůřek and Sojka, 2010), a topic modelling framework in Python, and Apache Lucene (Cutting et al., 2004), a Java library for document indexing and search, are designed for specific tasks.
projects GATE (Cunningham et al., 2011) and Apache UIMA (Apache, 2010), represent a comprehensive family of tools for text analytics.