• Leslie Huang. Maintainer, contributor.

  • Patrick O. Perry. Author, copyright holder.

  • Finn Årup Nielsen. Copyright holder, data contributor.
    AFINN Sentiment Lexicon

  • Martin Porter and Richard Boulton. Contributor, copyright holder, data contributor.
    Snowball Stemmer and Stopword Lists

  • The Regents of the University of California. Contributor, copyright holder.
    Strtod Library Procedure

  • Carlo Strapparava and Alessandro Valitutti. Copyright holder, data contributor.
    WordNet-Affect Lexicon

  • Unicode, Inc.. Copyright holder, data contributor.
    Unicode Character Database