[tehno]

Typically this means the team has convinced someone they know at these companies to try it or give some feedback on an early version and thus voila you'll find "used by Apple" or something impressive like that in slides :)

[benjanik]

You're not wrong. We don't have any paying customers, but we've had discussions with people from dozens of companies, and those are the ones we chose to advertise. Only a couple are people we knew beforehand.