Below are some of the tools that I have used for my online business:
Thrivecart & Learn Plus Lifetime Deal: Thrivecart is a hosted shopping cart software that allows you to setup powerful sales funnel. Learn Plus is a simple online course platform that you can sell your courses with in.
ConvertBox Pro Lifetime Deal: ConvertBox is a powerful Visitor Engagement Platform that designed to easily use in html website, WordPress website and on all major page builders. You can easily put up intelligent on-site messages such as personalised offers, lead capture forms and segmentation funnels to the right visitors at the right time.