Oxford University Press is a department of the University of Oxford. It furthers the University's objective of excellence in research, scholarship, and education by publishing worldwide. It is the world's largest university press. It publishes more than 4,500 new books a year, has a presence in over fifty countries, and employs some 3,700 people worldwide. Mobile Systems released the first mobile Oxford dictionary in 2003 and since then licensed over 20 titles.

PONS is a registered trademark of Ernst Klett Sprachen GmbH - a 100% subsidiary of the Stuttgart-based Ernst Klett AG. An international company with over 200 employees worldwide, it develops and markets products for language learners and research tools for the most important languages in the world. As a specialist publisher, it has an international presence with interests in Barcelona, Belgrade, Budapest, Ljubljana, London, Poznan, Prague, Sofia, and Zagreb. Its central office is located in Stuttgart.

Cambridge is the oldest printing and publishing house in the world, and is dedicated to the advancement and dissemination of knowledge. Internationally recognised for the quality and excellence of their products, they publish over 2500 titles and 200 journals every year.

Publishing dictionaries for over 175 years, Collins is the number one dictionary publisher in the UK and one of the world's largest dictionary companies. Collins publishes English dictionaries, the Cobuild range of dictionaries of learners of English, and a wide range of bilingual dictionaries, and including dictionaries for children and students

Brockhaus Duden Neue Medien GmbH located in Mannheim is a wholly-owned subsidiary of Bibliographisches Institut & F. A. Brockhaus AG publishing house. Brockhaus Duden Neue Medien GmbH cooperates with key scientist and industry players to carry out research and development projects in the fields of knowledge management and computer linguistics. Duden's dictionaries are an established standard on the market. The products developed by Duden language technology cover the most comprehensive and updated vocabulary. Duden's reference books and dictionaries are specially designed for journalists, editors, students, interpreters and translators, as well as for everyone, who wants to write or speak clearly and stylistically correctly.

McGraw-Hill Professional is a unit of McGraw-Hill Education. McGraw-Hill Education, a division of The McGraw-Hill Companies (NYSE: MHP), is a leading innovator in the development of teaching and learning solutions for the 21st century. Through a comprehensive range of traditional and digital education content and tools, McGraw-Hill Education empowers and prepares professionals and students of all ages to connect, learn and succeed in the global economy. McGraw-Hill Education has offices in 33 countries and publishes in more than 65 languages.