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Facebook
it was invented by Mark Zuckerberg and a few College students and roommates. -
Twitter
Jack Dorsey, Noah Glass, Biz Stone, and Evan Williams all helps each other create twitter release date -
instagram
Kevin Systrom and Mike Krieger created Instagram. -
people who created snapchat
Spiegel and Murphy and Brown invented snapchat but later on the kick brown out the group they worked for several months before snapchat was released -
Instagram Friends
you can only add friends by looking up there name. -
snapchat
you can add friends from phone book, there username, near by, or taking a picture. -
facebook
you can add friends by looking them up, if they add you or phone book. -
twitter
you can add people by there username, if one of your friends retweets someone else.
