In early 2009 The name was designed to sound like the greeting "what's up?" combined with "app," shorthand for application:

A mobile app that allows users to send and receive "self-destructing" photos and videos:

An photo and video sharing social networking service owned by Meta Platforms. It allows users to upload media that can be edited with filters, be organized by hashtags, and be associated with a location via geographical tagging. Posts can be shared publicly or with preapproved followers:

whose mainland Chinese counterpart is Douyin, is a short-form video hosting service owned by ByteDance. It hosts user-submitted videos, which can range in duration from 3 seconds to 10 minutes:

An American online video sharing and social media platform owned by Google. Accessible worldwide, it was launched on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim:

A free social networking site where users broadcast short posts known as tweets:

A message that is sent by telegraph and then printed and delivered to someone's home or office:

A blue circle means that your message is sending:

The popular term known as DM: