Wikipedia
Bookboon was founded in Denmark in 1988, and is an online publishing company based in Copenhagen, Denmark and London, United Kingdom. It is the world's largest publisher of eBooks, with 56 million downloaded eBooks worldwide in 2013, and 75 million in 2014. Bookboon currently has more than 800 academic textbooks available to students on their website. These free textbooks are financed by employer branding ads placed in the books. Bookboon also offers a wide selection of eBooks for business professionals that can be purchased directly or accessed via Bookboon Premium – a subscription service for private users.
The subjects covered by its student textbooks include economics, engineering, IT and the natural sciences, while its professional eBooks focus on topics including personal development, marketing, management, accounting and office skills. In 2014, Bookboon launched its Corporate eLibrary, an internal learning solution for companies.