Grouper

Grouper was a New York-based social dating startup that organized group outings between two sets of three friends — typically mixed-gender groups — who would meet for drinks at a local bar. Members signed up with Facebook, and Grouper handled venue selection, scheduling, and matchmaking algorithmically, removing the awkwardness of traditional blind dates by making each outing a social event among friends. Founded in 2011 by Michael Waxman, Tom Brown, and Ariel Galili as a Y Combinator-backed company, Grouper expanded to multiple U.S. cities before shutting down around 2017.