The new ClickFunnels Platform has so much potential! We are currently using it for Funnel Hubs as we wait for it to come out of beta.
The original 1.0 ClickFunnels. We still love it for it's stability. We and our clients are using it for funnels and custom coded membership areas.
ActiveCampaign is our CRM and Email Autoresponder of choice. We love the workflow layout and the ability to integrate other tech in our stack.