Reviewshake - Reviewshake helps you manage all your review sites from one place, automate new reviews from your customers and track review performance
Reviews for iOS - Keep track of your App Store reviews
Siftery - Share products your company uses and get personalized recommendations
Product Reviews - Concise and unbiased software product reviews
AppFollow - AppFollow is an integrated solution that makes monitoring, analyzing, and elevating your app's reputation easy.
Review Scraper API - Reviews from 50+ sites in JSON