Waitlist API - Quick and easy waitlist with built in referral.
EZRentOut - EZRentOut is a cloud based equipment rental software for rental businesses.
LaunchList - Create waitlist with referral for your product launch
PROSPER - Prosper is a pioneer of peer-to-peer (P2P) online lending in the United States.
Waitlisty.io - Build excitement for your product by embedding a simple form into your website. Signups will receive a referral code to share with their friends. The more codes they share, the more they climb your waitlist.
ProdEval - At tcwsoftware.