OSI Affiliate Software is described as 'web-based platform that helps you create and manage an affiliate program for your business'. There are more than 25 alternatives to OSI Affiliate Software, not only websites but also apps for a variety of platforms, including Mac, Windows, Self-Hosted solutions and Wordpress. The best alternative is Avangate. It's not free, so if you're looking for a free alternative, you could try Bytemart.org or Commission Junction. Other great sites and apps similar to OSI Affiliate Software are ShareASale (Paid), Post Affiliate Pro (Paid), Blink (Paid) and ClickBank (Free).
Datafeedr makes it easy to build and embed an affiliate store into your WordPress blog. No programming required. Promote products from thousands of merchants. Your store automatically updates. Choose from 270+ million products to build your store.