invitebox.comSoftware by InviteBox
Viral Loops - Viral Loops is a viral and referral marketing platform to launch ranking competitions, sweepstakes, pre-launch and referral programs.
Gleam - Marketing apps designed to help you grow your Business
Girafi - Get more from your website visitors. Referrals, feedback, e-mails & more.
Referral Candy - Run a fully automated, customizable and easy to integrate referral program for ecommerce.
RafflePress - RafflePress is the best WordPress contest and giveaway plugin. Grow your email list, followers, and website traffic with viral giveaways in WordPress.
Firewards - Setup a referral and rewards program for your email list or newsletter.