A South Korean internet company (think Google)

http://www.daumkakao.com/en/main

http://www.daumkakao.com/en/about/service

http://www.kakao.com/services/8 (Messenger)

http://www.kakao.com/services/49 (Uber)

http://www.kakao.com/services/15 (Maps & Yelp)

Wikipedia: https://en.wikipedia.org/wiki/Daum_Kakao