Linkly - Linkly is a tool to help affiliate marketers track clicks and improve revenues.
Waitlist API - Quick and easy waitlist with built in referral.
Bitly - Get the most out of your social and online marketing efforts. Own, understand and activate your best audience through the power of the link with Bitly Enterprise.
LaunchList - Create waitlist with referral for your product launch
Sniply - Sniply is a content marketing tool providing social media conversion.
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.