This chapter presents a free software program that can be used for POS tagging in a multiplicity of languages that do not have automatic taggers. The pro-gram aims to facilitate the work with corpora in these languages through Natural Language Processing. Its operation allows the manual tagging process to be gradu-ally automated thanks to a system that makes it possible to recall and reuse tags, as well as to handle large amounts of text and to generate output files in XML format with tags based on the EAGLES system.