Feather Attribution - A free and tiny javascript library to track UTM tags, ref and referrer data client side so you can store these in your own database.
Attention Insight - Maximize advertising campaign results and design performance with pre-launch analytics.
LoyalAs - Get and track referrals automatically.
Insights by Autopilot - Goal tracking and marketing analytics for customer journeys
ToneDen Lasso - Put fan and customer acquisition on autopilot
Reveal - Facebook Ads automation & cross-platform analytics reports