Reviews for iOS - Keep track of your App Store reviews
AbTest.io - A free url shortener with A/B testing features
Product Reviews - Concise and unbiased software product reviews
Anboto - Anboto provides web customer service and e-Commerce technology based on semantics and natural language processing.
Review Scraper API - Reviews from 50+ sites in JSON
GoodUI Evidence - People's A/B test results that show which UI ideas work best