Naver (search), Kakao(message+maps+transit), Daum(search/blogs etc), Coupang(online ordering), Shuttle Food Delivery / Yogiyo (uber eats) - few examples.

Naver runs a wide variety of services you'd expect, like payments, an online translator, a Yahoo Answers equivalent, messaging(LINE, which is ubiquitous not just in SK), a free blog offering, a search engine and a web browser.

https://en.m.wikipedia.org/wiki/Naver_Corporation#Products_a...

Kakao: Wechat/Uber

Ahnlab: Symantec/Norton

Hancom: Microsoft Office

Snow: Snapchat

Melon: Spotify

Cyworld: Myspace

Afreeka: Twitch

Toss: Venmo

NCSoft: Blizzard

Coupang: Amazon

Carrot: Ebay

Daum: Google/Medium

I don't really have a list, but in addition to maps, Naver also has search, email, calendar, cloud storage, etc.