Viral Loops - Viral Loops is a viral and referral marketing platform to launch ranking competitions, sweepstakes, pre-launch and referral programs.
ViralSweep - Grow your fans and increase sales with sweepstakes and giveaways.
Referral Candy - Run a fully automated, customizable and easy to integrate referral program for ecommerce.
Heyo - Use Heyo to easily create Sweepstakes, Contests, and Campaign apps that publish to Mobile, Facebook, and anywhere on the web.
UpViral - Referral marketing platform enables anyone in running effective and profitable viral marketing campaigns – in minutes.
ReferralHero - Powerful referral marketing platform for honest marketers.