Editorial Los Cuatro Azules is specialized in children's literature: hundreds of books for boys and girls.

Editorial Gredos has been publishing reference books for more than sixty years: more than 1400 titles of classical philology, lexicography and the Greco-Roman world.

Penguin Random House Grupo Editorial is the Spanish-language division of the international publishing company Penguin Random House, founded on July 1, 2013 after the merger of Bertelsmann's publishing division, Random House, with Pearson group, Penguin.

Editorial Milenio (Milenio Publicaciones, S.L.) was founded in 1996 by Lluís Pagés Marigot, its director. They have published since then 700 titles in Spanish distributed in twenty collections. Works of history, narrative, music, philosophy and more.

Boreal Books has been publishing textbooks for the last 10 years. These publications are useful both for students and teachers. All the authors are teachers who know better than anybody else the lack of efficiency of some educational materials.

Ático de los Libros was born in the spring of 2010 and it's focused on works of universal literature and contemporary classics that have been forgotten.

Ediciones Fortuna was born in September 2010. Fortuna publishes books of high interest and quality for children and young adults.

Editorial Salvatella was founded In 1922 by Miguel A. Salvatella in the neighbourhood of Gracia, in Barcelona city. After working in his father's bookstore for several years, the young Miguel wanted to adapt school publications to the new educational trends of our time and Salvatella became a pioneer in the field of educational publications for students and teachers.

JPM Ediciones is an independent publishing house focused on humanities with special interest in English Philology. Its goal is to promote outstanding works divided in two major groups: academic monographs and classical works.

Ediciones IDAMPA publishes children books (from 0 to 99 years old): new and extraordinary books with wonderfull illustrations, new formats and great classic stories that should be read more than once .