I have personally used Post Affiliate Pro for almost 2. While I had some small issues, the customer support team quickly resolved them. The software is pretty affordable and has a lot of excellent features and many, many integrations. We took the advantage of free set-up and integration, which was a very nice gesture from the company.
17hats - The all-in-one business system for entrepreneurs.
ShareASale - ShareASale has been in business for 20 years, exclusively as an Affiliate Marketing Network. Our technology receives accolades for speed, efficiency, and accuracy – and our reputation as a fair and honest business is well known within the industry.
Optmyzr - Optmyzr AdWords Tools. Optimization Solutions, Quality Score Tracker, Landing Page Checker, and more. Free Trial Available.
ClickBank - ClickBank is a secure online retail outlet for more than 50,000 digital products and 100,000 active affiliate marketers and are consistently ranked as one of the most highly-trafficked sites on the web.
LiveIntent - LiveIntent is a web platform that offers effective e-mail advertising services for marketers and publishers.
Commission Junction - CJ Affiliate by Conversant (formerly Commission Junction)