AffiliateWP v2.3 + Addons
AffiliateWP has complete integration with all major WordPress ecommerce and membership plugins. AffiliateWP tracks affiliate referrals reliably, even on servers with aggressive caching. AffiliateWP looks, and feels like it’s part of WordPress. Have an unlimited number of affiliates actively promoting your products and services. Affiliates can easily see how much they have earned, how much is awaiting payment, and even how their referral URLs have done over time.