KakaoMetro - Subway Navigation
Kakao Mobility Corp.
KakaoMap - Map / Navigation
Kakao Corp.
Smarter Subway – Korean subway
DoppelSoft
KakaoBus
Transit • Subway & Bus Times
Transit, Inc.
Seoul Subway - Official
Seoul Metro
Kakao T - Taxi, Driver, Bike
Citymapper
Citymapper Limited
NAVER Map, Navigation
NAVER Corp.
KakaoTalk : Messenger