This truly is the best software I have ever seen for affiliate programs. I purchased the Tier 8 plan, with multi-level affiliates enabled.

The software in general is extremely customizable. The ability to set tiers for commissions is fantastic. The fact you can set up different domains/subdomains for different programs with one universal login is also useful.

Setting up and integrating are very easy, ESPECIALLY for Shopify, which is literally just click and go. Another very easy way to integrate is via coupon codes (which are automatically generated) if you use Stripe. Most other methods of integration simply require copy/paste of some code into the header of the website.

I buy a lot of stuff on App Sumo. This one wins the crown for sure.