I liked the calendar and event tracking, the Google Apps integration and also the possibility to create workflows.
* Contact management
* Event (calls, mails, meetings) management and tracking
* Selling/Partnership workflow
* Reporting: ROI, income, selling, future perspectives
* Social Networks and services integration (loved it)
* Email seamless integration (worked amazingly perfect)
* Google Apps and other integrations
* Support cases
* Mobile app support Review collected by and hosted on G2.com.