CS-Cart Multi-Vendor - On-premises eCommerce marketplace builder
Referral Candy - Run a fully automated, customizable and easy to integrate referral program for ecommerce.
GreenRope - GreenRope is a powerful all-in-one CRM platform designed for small and medium-sized businesses.
Ambassador - Referral Automation, Made Simple.
SmartEngage - Cross-channel autoresponder for marketing automation
ReferralRocket.io - Referral Program Software for SaaS