Google+

Also known as Google Plus

Cause of death

Killed by scandal

with killed by indifference as a contributing factor

Made by

Google

Google disclosed a bug exposing private profile data and announced the consumer shutdown in the same breath.

Google+ was pushed onto users through every product Google owned, which generated enormous account numbers and very little actual use. The end came in October 2018, when Google revealed an API flaw that had exposed private profile fields and announced the consumer version's closure alongside it. The stated reasons were the security problem and low engagement together, which is a rare case of a company naming both the trigger and the underlying cause at once.

It killed Orkut on the way.