One review site that provides valuable insights is G2 Crowd. They score products and vendors based on ratings and reviews gathered from the user community, as well as data aggregated from online sources and social networks. They apply a unique, patent-pending algorithm to this data to calculate the customer satisfaction and market presence scores in real time.
Marketing automation plugs into a company's CRM system, which, typically, has its own native marketing automation cloud service (such as Salesforce Pardot and Oracle Eloqua). Eloqua will work with other CRM platforms that compete with Oracle's, and Marketo, an independent marketing automation platform, will work with Salesforce, Oracle, Microsoft and other CRM systems. HubSpot also is a popular marketing automation platform that has its own CRM backbone.