Wikipedia
Cotap, Inc. is a San Francisco-based company that sells a mobile messaging application for businesses. Unlike consumer-focused apps such as Whatsapp and WeChat that require phone numbers, Cotap allows users to find and connect with other users who share their corporate email domain. The company was founded in May 2013 by former Yammer executives Jim Patterson and Zack Parker. That month, Cotap announced it had received $5.5 million in a Series A funding round from Charles River Ventures and Emergence Capital Partners. Cotap received $10M in Series B funding in January 2014.
Cotap released its first app, which is available for iOS, in October 2013. In February 2014 Cotap released a native Android app. In August 2014, Cotap released a Mac and Web app alongside the announcement of cloud storage integrations with Box, Dropbox, Google Drive and OneDrive. Both iOS and Android apps, as well as the Mac and Web apps, allow users to send individual and group messages.