Agile CRM is really great software for marketers who want to leverage MA system for business. Agile gives a perfect system that helps you to track user activity and trigger automation in a very simplified manner. The usability of the product is really excellent once you're familiar with it. Agile give you very clean details including, web history, location, IP etc which helps you to segment and track user behaviour in advance manner.
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.