Issuu (/ˈɪsjuː/) is a free electronic publishing platform for magazines, catalogs, newspapers and more. As a digital newsstand with over 21 million publications and 85 million active readers, issuu features leading and emerging titles in fashion, culture, arts, and hyperlocal content, all of which are accessible on any device. Issuu software is used by many online publications. Some of its partners include The New York Times, Vice, and V Magazine.
References:
1. Wikipedia page for Issuu: https://en.wikipedia.org/wiki/Issuu
2. Issuu official website: http://issuu.com/