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.
Jobkitten - Hiring? Track, rate, comment applicants for free.
17hats - The all-in-one business system for entrepreneurs.
StatsDrone - StatsDrone is a cloud based app that helps you pull and store your clicks, sales, signups, revenue and commissions earned from gambling affiliate programs.
Optmyzr - Optmyzr AdWords Tools. Optimization Solutions, Quality Score Tracker, Landing Page Checker, and more. Free Trial Available.
A-List by AngelList - Hire top tech talent, first
LiveIntent - LiveIntent is a web platform that offers effective e-mail advertising services for marketers and publishers.