Launchrock - Setup a viral "Launching Soon" page in minutes to attract potential customers and promote your site's launch.
Ambassador - Referral Automation, Made Simple.
Viral Loops - Viral Loops is a viral and referral marketing platform to launch ranking competitions, sweepstakes, pre-launch and referral programs.
SalesCamp - Create beautiful reward referral campaigns in minutes and grow your startup organically.
Referral Candy - Run a fully automated, customizable and easy to integrate referral program for ecommerce.
CloudSponge - Companies from every industry use CloudSponge’s Contact Picker to get access to their users’ address books.