Snapchat is a video messaging application created by Evan Spiegel, Bobby Murphy, and Reggie Brown Poster when they were students at Stanford University.
Snapchat users can take photos, record videos, add a filter, "Lens", text, or sketch overlay, and send them to a controlled list of recipients. These sent photographs and videos are known as "Snaps". Users set a time limit for how long recipients can view their Snaps (as of September 2015, the range is from 1 to 10 seconds), after which Snapchat claims they will be deleted from the company's servers. More: en.wikipedia.org.