invitebox.comSoftware by InviteBox
uptain - uptain develops automated solutions for regaining lost customers in online shops.
Viral Loops - Viral Loops is a viral and referral marketing platform to launch ranking competitions, sweepstakes, pre-launch and referral programs.
Netlodge - Netflix for startups, reinvented.
Girafi - Get more from your website visitors. Referrals, feedback, e-mails & more.
Stack Exchange - Stack Exchange is a fast-growing network of 84 [and counting] question and answer sites on diverse...
Referral Candy - Run a fully automated, customizable and easy to integrate referral program for ecommerce.