Brickbox - Customer acquisition tools for indie makers
Referral Candy - Run a fully automated, customizable and easy to integrate referral program for ecommerce.
Tiny Acquisitions - Tiny acquisitions is the only marketplace for internet business that are priced under $5,000.
Ambassador - Referral Automation, Made Simple.
Smartlook - Qualitative analytics for websites and mobile apps Start understanding the 'whys' of your users' behaviors with clear, visual insights. With session recordings and event tracking, you get the complete picture.
ReferralRocket.io - Referral Program Software for SaaS