Sambahsa or Sambahsa-Mundialect is a constructed international auxiliary language (IAL) devised by French linguist Olivier Simon.Among IALs it is categorized as a worldlang. It is based on the Proto-Indo-European language (PIE) and has a relatively complex grammar.The language was first released on the Internet in July 2007; prior to that, the creator claims to have worked on it for eight years. According to one of the rare academic studies addressing recent auxiliary languages, "Sambahsa has an extensive vocabulary and a large amount of learning and reference material".