Before group chats muted themselves into irrelevance and read receipts sparked passive-aggressive debates, instant messaging was a full-blown event. You didn’t just send a message — you logged in.

Before the days of iMessage, WhatsApp, and RCS texting, instant messaging (IM'ing) ruled the roost - here are six iconic clients that defined the era.

SEOUL, South Korea (AP) — South Korean Internet company Naver Corp. said Monday its popular Line instant messaging app won’t go public on a stock exchange this year. Naver, which is Line’s parent ...

America Online Inc. said it’s close to releasing an interoperable version of its instant messenging and ICQ real-time chat services. The Dulles, Va.-based Internet service provider filed a status ...