The Netflix of X
You don’t hear it as much now (save for Pley, the new “Netflix for Legos”), but five years ago plenty of companies piggybacked on Netflix’s (NFLX) revolutionary subscription rental model, invoking its name for everything from fashion to videogames.
The Uber of X
The phrase describes any service that can be summoned to your doorstep with a tap of your smartphone. Uber, recently valued at $50 billion, has a small army of instant-gratification imitators, including Instacart for groceries and Eaze for medical marijuana.
The Classpass of X
The latest startup to go “for X” is ClassPass, a company offering unlimited fitness classes for $99 a month. Already two followers have launched: Vive, the ClassPass for blowouts, and Zeel, a ClassPass for massages.
This story is from the June 1, 2015 issue of Fortune magazine.