XTRA.GA - Google Analytics by Email - Awesome summary of your key #s
Needl Analytics - Analytics as automated insights
Analyzely - Rich marketing data analysis inside Google Analytics
Metric.live - Real-time and advanced periodic alerts for Google Analytics.
Google Analytics 360 Suite - Enterprise analytics for your marketing.
Quill Engage - Quill Engage takes the confusion out of Google Analytics reporting. Sign up for free and start getting website reports delivered to your inbox.