The following outline is provided as an overview of and topical guide to Esperanto: Esperanto is the most widely spoken constructed international auxiliary language. L. L. Zamenhof, a Polish-Jewish ophthalmologist, created Esperanto in the late 19th century and published the first book detailing it, Unua Libro, in 1887 under the pseudonym Dr. Esperanto, Esperanto translating as "one who hopes". What type of thing is Esperanto? Esperanto can be described as all of the following: Language International auxiliary language Constructed language Branches of Esperanto Esperantido Mundolinco Reformed Esperanto (Esperanto 1894) Ido Esperanto II Romániço History of Esperanto History of Esperanto Zamenhof Proto-Esperanto Unua Libro Dua Libro La Esperantisto Fundamento de Esperanto Declaration of Boulogne Montevideo Resolution Manifesto of Rauma Manifesto of Prague Modern evolution of Esperanto General Esperanto concepts Grammar Phonology Orthography Braille Substitutions and reforms of the Esperanto alphabet Letters with diacritics Ĉ Ĝ Ĥ Ĵ Ŝ Ŭ Vocabulary Etymology Special Esperanto adverbs Interrogatives in Esperanto Esperanto words with the infix -um- Esperanto profanity Comparison between: Esperanto and Ido Esperanto and Interlingua Esperanto and Novial Gender reform in Esperanto Esperanto organizations List of Esperanto organizations World Esperanto Congress Akademio de Esperanto Universal Esperanto Association World Esperanto Youth Organization International Youth Congress European Youth Week World Anational Association Encyclopedia Pasporta Servo Plouézec Meetings European Esperanto Union Europe–Democracy–Esperanto Panamerican Congress Skolta Esperanto Ligo Presidents of Universal Esperanto Association Universal Esperanto Association President of the Universal Esperanto Association Louis Bastien (Esperantist) Probal Dasgupta Kep Enderby Mark Fettes Hector Hodler Harry W. Holmes Ivo Lapenna Ernfrid Malmgren Harold Bolingbroke Mudie Edmond Privat John C. Wells Additional Esperanto organizations Esperanto club International League of Esperantist Radio Amateurs Akademio de Esperanto Akademio Literatura de Esperanto Arbeidernes Esperantoforbund Association of Green Esperantists Bahá'í Esperanto-League Buenos Aires Esperanto Association Distributed Language Translation E@I Esperantic Studies Foundation Esperanto Museum and Collection of Planned Languages Europe–Democracy–Esperanto European Esperanto Union Guvernanta Sonorilo Esperanto Icelandic Esperanto Association Indigenous Dialogues Indonesian Esperanto Association International Esperanto League International League of Christian Esperantists International League of Esperanto Teachers International Union of Catholic Esperantists Iranian Esperanto Association Junularo Esperantista Brita Mondpaca Esperantista Movado Pasporta Servo Plouézec International Meetings President of the Universal Esperanto Association Quebec Esperanto Society SATEB Sennacieca Asocio Tutmonda Skolta Esperanto Ligo Terminologia Esperanto-Centro Universal Esperanto Association World Esperantist Vegetarian Association World Esperanto Youth Organization National Esperanto organizations Australian Esperanto Association Esperanto Association of Britain Canadian Esperanto Association Croatian Esperanto League Esperanto in Malaysia